test: port previously-ignored Composer tests via __ test hatches

Re-evaluate the reason'd #[ignore] tests under the Phase D criterion:
a test is unportable ONLY if the APIs/types needed to WRITE it do not
exist. A test that compiles but panics at runtime (todo!() body, a
regex the regex crate cannot compile) or fails at runtime (incomplete
or incorrect impl behavior) is portable -- it is written in full and
marked with a reason-less #[ignore].

About 120 test functions move from reason'd #[ignore] to reason-less
#[ignore] (the ported-but-not-yet-passing signal). Impl crates gain
only additive __ test hatches (init_command, pool, file_downloader,
package handle link setters, artifact/path repository, repository
manager, svn); no existing logic changes. Tests whose required APIs
genuinely do not exist (mock/reflection harness, ApplicationTester,
solve() discarding SolverProblemsException, a script::Event that
cannot be passed as an originating event) keep their reason'd
#[ignore].

cargo check -p shirabe --tests passes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

37 files changed, 3470 insertions, 243 deletions

diff --git a/crates/shirabe/tests/advisory/audit_config_test.rs b/crates/shirabe/tests/advisory/audit_config_test.rs
index 30bbb92..85337a4 100644
--- a/crates/shirabe/tests/advisory/audit_config_test.rs
+++ b/crates/shirabe/tests/advisory/audit_config_test.rs
@@ -95,7 +95,7 @@ fn test_detailed_format_block_only() {
 }
 
 #[test]
-#[ignore = "parse_ignore_with_apply does not handle integer keys, so the bare list entry is mis-parsed"]
+#[ignore]
 fn test_mixed_formats() {
     let audit_config = audit_config_from(arr(vec![(
         "ignore",
diff --git a/crates/shirabe/tests/command/init_command_test.rs b/crates/shirabe/tests/command/init_command_test.rs
index 589afc5..6b118f3 100644
--- a/crates/shirabe/tests/command/init_command_test.rs
+++ b/crates/shirabe/tests/command/init_command_test.rs
@@ -1,38 +1,96 @@
 //! ref: composer/tests/Composer/Test/Command/InitCommandTest.php
 
-// The author/namespace/git-config helpers are protected methods exercised via reflection
-// in PHP; the run cases need the ApplicationTester. Neither is available here.
+// The run cases (testRunCommand, testRunCommandInvalid, testRunGuessNameFromDirSanitizesDir,
+// testInteractiveRun) drive the full command via ApplicationTester / initTempComposer, which
+// does not exist here; they remain reason'd-ignore. The unit-style cases call the helper
+// methods directly via `__`-prefixed test-only wrappers.
 
 use shirabe::command::init_command::InitCommand;
-use shirabe_php_shim::server_set;
+use shirabe_php_shim::{PhpMixed, server_set};
+use tempfile::TempDir;
 
 fn set_up() {
     server_set("COMPOSER_DEFAULT_AUTHOR", "John Smith".to_string());
     server_set("COMPOSER_DEFAULT_EMAIL", "john@example.com".to_string());
 }
 
-#[ignore = "InitCommand::parse_author_string is private; integration tests cannot reach it (PHP uses reflection)"]
+/// @return iterable<string, array{0: string, 1: string|null, 2: string}>
+fn valid_author_string_provider() -> Vec<(&'static str, Option<&'static str>, &'static str)> {
+    vec![
+        // simple
+        (
+            "John Smith",
+            Some("john@example.com"),
+            "John Smith <john@example.com>",
+        ),
+        // without email
+        ("John Smith", None, "John Smith"),
+        // UTF-8
+        (
+            "Matti Meikäläinen",
+            Some("matti@example.com"),
+            "Matti Meikäläinen <matti@example.com>",
+        ),
+        // UTF-8 with non-spacing marks (\xCC\x88 is U+0308 combining diaeresis)
+        (
+            "Matti Meika\u{0308}la\u{0308}inen",
+            Some("matti@example.com"),
+            "Matti Meika\u{0308}la\u{0308}inen <matti@example.com>",
+        ),
+        // numeric author name
+        ("h4x0r", Some("h4x@example.com"), "h4x0r <h4x@example.com>"),
+        // alias 1 (issue #5631)
+        (
+            "Johnathon \"Johnny\" Smith",
+            Some("john@example.com"),
+            "Johnathon \"Johnny\" Smith <john@example.com>",
+        ),
+        // alias 2 (issue #5631)
+        (
+            "Johnathon (Johnny) Smith",
+            Some("john@example.com"),
+            "Johnathon (Johnny) Smith <john@example.com>",
+        ),
+    ]
+}
+
+#[ignore]
 #[test]
 fn test_parse_valid_author_string() {
     set_up();
 
-    todo!()
+    for (name, email, input) in valid_author_string_provider() {
+        let command = InitCommand::new();
+        let author = command.__parse_author_string(input).unwrap();
+        assert_eq!(
+            Some(name.to_string()),
+            author.get("name").cloned().flatten()
+        );
+        assert_eq!(
+            email.map(|e| e.to_string()),
+            author.get("email").cloned().flatten()
+        );
+    }
 }
 
-#[ignore = "InitCommand::parse_author_string is private; integration tests cannot reach it (PHP uses reflection)"]
+#[ignore]
 #[test]
 fn test_parse_empty_author_string() {
     set_up();
 
-    todo!()
+    let command = InitCommand::new();
+    let result = command.__parse_author_string("");
+    assert!(result.is_err());
 }
 
-#[ignore = "InitCommand::parse_author_string is private; integration tests cannot reach it (PHP uses reflection)"]
+#[ignore]
 #[test]
 fn test_parse_author_string_with_invalid_email() {
     set_up();
 
-    todo!()
+    let command = InitCommand::new();
+    let result = command.__parse_author_string("John Smith <john>");
+    assert!(result.is_err());
 }
 
 #[test]
@@ -97,34 +155,74 @@ fn test_interactive_run() {
     todo!()
 }
 
-#[ignore = "InitCommand::format_authors is pub(crate); integration tests cannot reach it (PHP subclasses via DummyInitCommand)"]
+#[ignore]
 #[test]
 fn test_format_authors() {
     set_up();
 
-    todo!()
+    let author_with_email = "John Smith <john@example.com>";
+    let author_without_email = "John Smith";
+    let command = InitCommand::new();
+
+    let authors = command.__format_authors(author_with_email).unwrap();
+    let mut expected: indexmap::IndexMap<String, PhpMixed> = indexmap::IndexMap::new();
+    expected.insert(
+        "name".to_string(),
+        PhpMixed::String("John Smith".to_string()),
+    );
+    expected.insert(
+        "email".to_string(),
+        PhpMixed::String("john@example.com".to_string()),
+    );
+    assert_eq!(expected, authors[0]);
+
+    let authors = command.__format_authors(author_without_email).unwrap();
+    let mut expected: indexmap::IndexMap<String, PhpMixed> = indexmap::IndexMap::new();
+    expected.insert(
+        "name".to_string(),
+        PhpMixed::String("John Smith".to_string()),
+    );
+    assert_eq!(expected, authors[0]);
 }
 
-#[ignore = "InitCommand::get_git_config is pub(crate); integration tests cannot reach it (PHP subclasses via DummyInitCommand)"]
+#[ignore]
 #[test]
 fn test_get_git_config() {
     set_up();
 
-    todo!()
+    let mut command = InitCommand::new();
+    let git_config = command.__get_git_config();
+    assert!(git_config.contains_key("user.name"));
+    assert!(git_config.contains_key("user.email"));
 }
 
-#[ignore = "InitCommand::add_vendor_ignore is pub(crate) and test needs TestCase::get_unique_tmp_directory; neither reachable from integration tests"]
+#[ignore]
 #[test]
 fn test_add_vendor_ignore() {
     set_up();
 
-    todo!()
+    let tmp = TempDir::new().unwrap();
+    let ignore_file = tmp.path().join("ignore");
+    let ignore_file = ignore_file.to_str().unwrap();
+
+    let command = InitCommand::new();
+    command.__add_vendor_ignore(ignore_file, "/vendor/");
+    assert!(std::path::Path::new(ignore_file).exists());
+    let content = std::fs::read_to_string(ignore_file).unwrap();
+    assert!(content.contains("/vendor/"));
 }
 
-#[ignore = "InitCommand::has_vendor_ignore/add_vendor_ignore are pub(crate) and test needs TestCase::get_unique_tmp_directory; neither reachable from integration tests"]
+#[ignore]
 #[test]
 fn test_has_vendor_ignore() {
     set_up();
 
-    todo!()
+    let tmp = TempDir::new().unwrap();
+    let ignore_file = tmp.path().join("ignore");
+    let ignore_file = ignore_file.to_str().unwrap();
+
+    let command = InitCommand::new();
+    assert!(!command.__has_vendor_ignore(ignore_file, "vendor"));
+    command.__add_vendor_ignore(ignore_file, "/vendor/");
+    assert!(command.__has_vendor_ignore(ignore_file, "vendor"));
 }
diff --git a/crates/shirabe/tests/composer_test.rs b/crates/shirabe/tests/composer_test.rs
index 75a554c..28d9d47 100644
--- a/crates/shirabe/tests/composer_test.rs
+++ b/crates/shirabe/tests/composer_test.rs
@@ -55,7 +55,7 @@ fn test_set_get_package() {
 }
 
 #[test]
-#[ignore = "Locker construction builds an HttpDownloader, which reaches curl_multi_init (todo!()) in the php-shim"]
+#[ignore]
 fn test_set_get_locker() {
     let mut composer = Composer::new();
     let io = null_io();
@@ -74,7 +74,7 @@ fn test_set_get_locker() {
 }
 
 #[test]
-#[ignore = "RepositoryManager construction builds an HttpDownloader, which reaches curl_multi_init (todo!()) in the php-shim"]
+#[ignore]
 fn test_set_get_repository_manager() {
     let mut composer = Composer::new();
     let io = null_io();
@@ -101,7 +101,7 @@ fn test_set_get_download_manager() {
 }
 
 #[test]
-#[ignore = "InstallationManager construction builds a Loop/HttpDownloader, which reaches curl_multi_init (todo!()) in the php-shim"]
+#[ignore]
 fn test_set_get_installation_manager() {
     let mut composer = Composer::new();
     let io = null_io();
diff --git a/crates/shirabe/tests/console/html_output_formatter_test.rs b/crates/shirabe/tests/console/html_output_formatter_test.rs
index af75551..2274ffe 100644
--- a/crates/shirabe/tests/console/html_output_formatter_test.rs
+++ b/crates/shirabe/tests/console/html_output_formatter_test.rs
@@ -7,7 +7,7 @@ use shirabe_external_packages::symfony::console::formatter::{
 };
 
 #[test]
-#[ignore = "HtmlOutputFormatter::format uses a regex pattern the regex crate cannot compile (backreferences)"]
+#[ignore]
 fn test_formatting() {
     let mut styles: IndexMap<String, Box<dyn OutputFormatterStyleInterface>> = IndexMap::new();
     styles.insert(
diff --git a/crates/shirabe/tests/dependency_resolver/pool_builder_test.rs b/crates/shirabe/tests/dependency_resolver/pool_builder_test.rs
index 4c72091..87f02aa 100644
--- a/crates/shirabe/tests/dependency_resolver/pool_builder_test.rs
+++ b/crates/shirabe/tests/dependency_resolver/pool_builder_test.rs
@@ -1,9 +1,647 @@
 //! ref: composer/tests/Composer/Test/DependencyResolver/PoolBuilderTest.php
 
-// testPoolBuilder is a large fixture-driven case that loads packages from test inputs and
-// builds a Pool; constraint parsing uses a look-around regex the regex crate cannot compile.
+use std::cell::RefCell;
+use std::path::PathBuf;
+use std::rc::Rc;
+
+use indexmap::IndexMap;
+use shirabe::config::Config;
+use shirabe::dependency_resolver::default_policy::DefaultPolicy;
+use shirabe::dependency_resolver::pool::Pool;
+use shirabe::dependency_resolver::pool_optimizer::PoolOptimizer;
+use shirabe::dependency_resolver::request::{Request, UpdateAllowTransitiveDeps};
+use shirabe::io::io_interface::IOInterface;
+use shirabe::io::null_io::NullIO;
+use shirabe::json::JsonFile;
+use shirabe::package::BasePackageHandle;
+use shirabe::package::STABILITIES;
+use shirabe::package::loader::{ArrayLoader, LoaderInterface};
+use shirabe::package::version::version_parser::VersionParser;
+use shirabe::repository::array_repository::ArrayRepository;
+use shirabe::repository::filter_repository::FilterRepository;
+use shirabe::repository::handle::{LockArrayRepositoryHandle, RepositoryInterfaceHandle};
+use shirabe::repository::lock_array_repository::LockArrayRepository;
+use shirabe::repository::repository_factory::RepositoryFactory;
+use shirabe::repository::repository_set::{RepositorySet, RootAliasInput};
+use shirabe_external_packages::composer::pcre::preg::Preg;
+use shirabe_php_shim::PREG_SPLIT_DELIM_CAPTURE;
+use shirabe_php_shim::PhpMixed;
+
+/// Maps the PHP `$loadPackage` closure: pops the optional `id` from the data, loads the
+/// package and records it in `package_ids` keyed by that id (erroring on duplicates).
+fn load_package(
+    loader: &ArrayLoader,
+    package_ids: &mut IndexMap<i64, BasePackageHandle>,
+    data: &IndexMap<String, PhpMixed>,
+) -> BasePackageHandle {
+    let mut data = data.clone();
+
+    let mut id: Option<i64> = None;
+    // PHP: !empty($data['id'])
+    if let Some(id_val) = data.get("id") {
+        if let Some(i) = id_val.as_int() {
+            if i != 0 {
+                id = Some(i);
+                data.shift_remove("id");
+            }
+        }
+    }
+
+    let pkg = loader.load(data, None).unwrap();
+
+    if let Some(id) = id {
+        if package_ids.contains_key(&id) {
+            panic!("Duplicate package id {} defined", id);
+        }
+        package_ids.insert(id, pkg.clone());
+    }
+
+    pkg
+}
+
+fn read_test_file(file: &str, fixtures_dir: &str) -> IndexMap<String, String> {
+    let contents = shirabe_php_shim::file_get_contents(file).unwrap();
+    let tokens = Preg::split4(
+        r"#(?:^|\n*)--([A-Z-]+)--\n#",
+        &contents,
+        -1,
+        PREG_SPLIT_DELIM_CAPTURE,
+    );
+
+    // PHP section_info is a map of name => required flag.
+    let section_info: Vec<(&str, bool)> = vec![
+        ("TEST", true),
+        ("ROOT", false),
+        ("REQUEST", true),
+        ("FIXED", false),
+        ("PACKAGE-REPOS", true),
+        ("EXPECT", true),
+        ("EXPECT-OPTIMIZED", false),
+    ];
+
+    let mut section: Option<String> = None;
+    let mut data: IndexMap<String, String> = IndexMap::new();
+    for token in tokens {
+        if section.is_none() && token.is_empty() {
+            continue;
+        }
+
+        if section.is_none() {
+            if !section_info.iter().any(|(name, _)| *name == token.as_str()) {
+                panic!(
+                    "The test file \"{}\" must not contain a section named \"{}\".",
+                    file.replace(&format!("{}/", fixtures_dir), ""),
+                    token
+                );
+            }
+            section = Some(token);
+            continue;
+        }
+
+        let section_data = token;
+        data.insert(section.take().unwrap(), section_data);
+    }
+
+    for (section, required) in &section_info {
+        if *required && !data.contains_key(*section) {
+            panic!(
+                "The test file \"{}\" must have a section named \"{}\".",
+                file.replace(&format!("{}/", fixtures_dir), ""),
+                section
+            );
+        }
+    }
+
+    data
+}
+
+fn collect_test_files(dir: &std::path::Path, out: &mut Vec<PathBuf>) {
+    for entry in std::fs::read_dir(dir).unwrap() {
+        let entry = entry.unwrap();
+        let path = entry.path();
+        if path.is_dir() {
+            collect_test_files(&path, out);
+        } else {
+            out.push(path);
+        }
+    }
+}
+
+struct IntegrationTest {
+    file: String,
+    message: String,
+    expect: PhpMixed,
+    expect_optimized: PhpMixed,
+    root: PhpMixed,
+    request: PhpMixed,
+    package_repos: PhpMixed,
+    fixed: PhpMixed,
+}
+
+fn get_integration_tests(fixtures_dir: &std::path::Path) -> IndexMap<String, IntegrationTest> {
+    let fixtures_dir_str = fixtures_dir.to_str().unwrap().to_string();
+
+    let mut files: Vec<PathBuf> = Vec::new();
+    collect_test_files(fixtures_dir, &mut files);
+
+    let mut tests: IndexMap<String, IntegrationTest> = IndexMap::new();
+    for file in files {
+        let file = file.to_str().unwrap().to_string();
+
+        if !Preg::is_match(r"/\.test$/", &file) {
+            continue;
+        }
+
+        let test_data = read_test_file(&file, &fixtures_dir_str);
+
+        let message = test_data["TEST"].clone();
+
+        let request = JsonFile::parse_json(Some(&test_data["REQUEST"]), None).unwrap();
+        // PHP: !empty($testData['ROOT']) ? parseJson(...) : []
+        let root = match test_data.get("ROOT") {
+            Some(s) if !s.is_empty() => JsonFile::parse_json(Some(s), None).unwrap(),
+            _ => PhpMixed::List(vec![]),
+        };
+
+        let package_repos = JsonFile::parse_json(Some(&test_data["PACKAGE-REPOS"]), None).unwrap();
+        let fixed = match test_data.get("FIXED") {
+            Some(s) if !s.is_empty() => JsonFile::parse_json(Some(s), None).unwrap(),
+            _ => PhpMixed::List(vec![]),
+        };
+        let expect = JsonFile::parse_json(Some(&test_data["EXPECT"]), None).unwrap();
+        let expect_optimized = match test_data.get("EXPECT-OPTIMIZED") {
+            Some(s) if !s.is_empty() => JsonFile::parse_json(Some(s), None).unwrap(),
+            _ => expect.clone(),
+        };
+
+        let basename = std::path::Path::new(&file)
+            .file_name()
+            .unwrap()
+            .to_str()
+            .unwrap()
+            .to_string();
+        tests.insert(
+            basename,
+            IntegrationTest {
+                file: file.replace(&format!("{}/", fixtures_dir_str), ""),
+                message,
+                expect,
+                expect_optimized,
+                root,
+                request,
+                package_repos,
+                fixed,
+            },
+        );
+    }
+
+    tests
+}
+
+/// PHP `sort()` with SORT_REGULAR over a mixed int/string list. Mirrors PHP 8 loose
+/// comparison: two ints compare numerically; a string and an int that looks numeric
+/// compare numerically; otherwise both are compared as strings.
+fn php_sort_mixed(values: &mut [PhpMixed]) {
+    fn cmp(a: &PhpMixed, b: &PhpMixed) -> std::cmp::Ordering {
+        use std::cmp::Ordering;
+        let num = |m: &PhpMixed| -> Option<f64> {
+            match m {
+                PhpMixed::Int(i) => Some(*i as f64),
+                PhpMixed::Float(f) => Some(*f),
+                PhpMixed::String(s) => s.trim().parse::<f64>().ok(),
+                _ => None,
+            }
+        };
+        let str_of = |m: &PhpMixed| -> String {
+            match m {
+                PhpMixed::Int(i) => i.to_string(),
+                PhpMixed::Float(f) => f.to_string(),
+                PhpMixed::String(s) => s.clone(),
+                _ => String::new(),
+            }
+        };
+        match (a, b) {
+            (PhpMixed::Int(x), PhpMixed::Int(y)) => x.cmp(y),
+            _ => match (num(a), num(b)) {
+                (Some(x), Some(y)) => x.partial_cmp(&y).unwrap_or(Ordering::Equal),
+                _ => str_of(a).cmp(&str_of(b)),
+            },
+        }
+    }
+    values.sort_by(cmp);
+}
+
+/// ref: PoolBuilderTest::getPackageResultSet
+fn get_package_result_set(
+    pool: &Pool,
+    package_ids: &IndexMap<i64, BasePackageHandle>,
+) -> Vec<PhpMixed> {
+    let mut result: Vec<BasePackageHandle> = Vec::new();
+    let count = pool.__count();
+    // PHP: for ($i = 1; $i <= $count; $i++)
+    let mut i = 1;
+    while i <= count {
+        result.push(pool.package_by_id(i));
+        i += 1;
+    }
+
+    // PHP: array_search($package, $packageIds, true) — identity lookup.
+    let find_id = |package: &BasePackageHandle| -> Option<i64> {
+        for (id, candidate) in package_ids {
+            if candidate.ptr_id() == package.ptr_id() {
+                return Some(*id);
+            }
+        }
+        None
+    };
+
+    result
+        .into_iter()
+        .map(|package| {
+            // PHP: if ($id = array_search(...)) — id keys start at 1 so always truthy when found.
+            if let Some(id) = find_id(&package) {
+                return PhpMixed::Int(id);
+            }
+
+            let mut suffix = String::new();
+            if let Some(source_reference) = package.get_source_reference() {
+                suffix = format!("#{}", source_reference);
+            }
+            if let Some(repo) = package.get_repository() {
+                if repo.is::<LockArrayRepository>() {
+                    suffix.push_str(" (locked)");
+                }
+            }
+
+            if let Some(alias) = package.as_alias() {
+                let alias_of = alias.get_alias_of();
+                // PHP: array_search($package->getAliasOf(), $packageIds, true)
+                let mut matched: Option<i64> = None;
+                for (id, candidate) in package_ids {
+                    if candidate.ptr_id() == alias_of.ptr_id() {
+                        matched = Some(*id);
+                        break;
+                    }
+                }
+                if let Some(id) = matched {
+                    return PhpMixed::String(format!(
+                        "{}-{}{} (alias of {})",
+                        package.get_name(),
+                        package.get_version(),
+                        suffix,
+                        id
+                    ));
+                }
+
+                return PhpMixed::String(format!(
+                    "{}-{}{} (alias of {})",
+                    package.get_name(),
+                    package.get_version(),
+                    suffix,
+                    alias_of.get_version()
+                ));
+            }
+
+            PhpMixed::String(format!(
+                "{}-{}{}",
+                package.get_name(),
+                package.get_version(),
+                suffix
+            ))
+        })
+        .collect()
+}
+
+/// ref: PoolBuilderTest::testPoolBuilder
+#[allow(clippy::too_many_arguments)]
+fn run_test_pool_builder(
+    fixtures_dir: &std::path::Path,
+    _file: &str,
+    message: &str,
+    expect: &PhpMixed,
+    expect_optimized: &PhpMixed,
+    root: &PhpMixed,
+    request_data: &PhpMixed,
+    package_repos: &PhpMixed,
+    fixed: &PhpMixed,
+) {
+    // PHP: $root is array; empty checks against keys.
+    let root_map = root.as_array();
+    let get_root = |key: &str| -> Option<&PhpMixed> { root_map.and_then(|m| m.get(key)) };
+    let is_empty = |v: Option<&PhpMixed>| -> bool {
+        match v {
+            None => true,
+            Some(PhpMixed::Null) => true,
+            Some(PhpMixed::Bool(false)) => true,
+            Some(PhpMixed::Int(0)) => true,
+            Some(PhpMixed::String(s)) => s.is_empty(),
+            Some(PhpMixed::List(l)) => l.is_empty(),
+            Some(PhpMixed::Array(a)) => a.is_empty(),
+            Some(PhpMixed::Object(a)) => a.is_empty(),
+            _ => false,
+        }
+    };
+
+    // PHP: $rootAliases = !empty($root['aliases']) ? $root['aliases'] : [];
+    let root_aliases_data: Vec<IndexMap<String, PhpMixed>> = if !is_empty(get_root("aliases")) {
+        get_root("aliases")
+            .and_then(|v| v.as_list())
+            .map(|l| {
+                l.iter()
+                    .filter_map(|v| v.as_array().cloned())
+                    .collect::<Vec<_>>()
+            })
+            .unwrap_or_default()
+    } else {
+        vec![]
+    };
+
+    let minimum_stability: String = if !is_empty(get_root("minimum-stability")) {
+        get_root("minimum-stability")
+            .and_then(|v| v.as_string())
+            .unwrap_or("stable")
+            .to_string()
+    } else {
+        "stable".to_string()
+    };
+
+    // PHP: $stabilityFlags map of name => stability string.
+    let stability_flags_data: IndexMap<String, String> = if !is_empty(get_root("stability-flags")) {
+        get_root("stability-flags")
+            .and_then(|v| v.as_array())
+            .map(|m| {
+                m.iter()
+                    .filter_map(|(k, v)| v.as_string().map(|s| (k.clone(), s.to_string())))
+                    .collect()
+            })
+            .unwrap_or_default()
+    } else {
+        IndexMap::new()
+    };
+
+    let root_references: IndexMap<String, String> = if !is_empty(get_root("references")) {
+        get_root("references")
+            .and_then(|v| v.as_array())
+            .map(|m| {
+                m.iter()
+                    .filter_map(|(k, v)| v.as_string().map(|s| (k.clone(), s.to_string())))
+                    .collect()
+            })
+            .unwrap_or_default()
+    } else {
+        IndexMap::new()
+    };
+
+    // PHP: array_map over stability flags, mapping to BasePackage::STABILITIES[$stability].
+    let mut stability_flags: IndexMap<String, i64> = IndexMap::new();
+    for (name, stability) in &stability_flags_data {
+        let Some(value) = STABILITIES.get(stability.as_str()) else {
+            panic!("Invalid stability given: {}", stability);
+        };
+        stability_flags.insert(name.clone(), *value);
+    }
+
+    let parser = VersionParser::new();
+    // PHP: foreach ($rootAliases as $index => $alias) { normalize version + alias }
+    let mut root_aliases: Vec<RootAliasInput> = Vec::new();
+    for alias in &root_aliases_data {
+        let package = alias
+            .get("package")
+            .and_then(|v| v.as_string())
+            .unwrap_or("")
+            .to_string();
+        let version = parser
+            .normalize(
+                alias
+                    .get("version")
+                    .and_then(|v| v.as_string())
+                    .unwrap_or(""),
+                None,
+            )
+            .unwrap();
+        let alias_str = alias
+            .get("alias")
+            .and_then(|v| v.as_string())
+            .unwrap_or("")
+            .to_string();
+        let alias_normalized = parser
+            .normalize(
+                alias.get("alias").and_then(|v| v.as_string()).unwrap_or(""),
+                None,
+            )
+            .unwrap();
+        root_aliases.push(RootAliasInput {
+            package,
+            version,
+            alias: alias_str,
+            alias_normalized,
+        });
+    }
+
+    let loader = ArrayLoader::new(None, true);
+    let mut package_ids: IndexMap<i64, BasePackageHandle> = IndexMap::new();
+
+    // PHP: $oldCwd = Platform::getCwd(); chdir(__DIR__.'/Fixtures/poolbuilder/');
+    let old_cwd = std::env::current_dir().unwrap();
+    std::env::set_current_dir(fixtures_dir).unwrap();
+
+    let mut repository_set = RepositorySet::new(
+        &minimum_stability,
+        stability_flags,
+        root_aliases,
+        root_references,
+        IndexMap::new(),
+        IndexMap::new(),
+    );
+    let config = Rc::new(RefCell::new(Config::new(false, None)));
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    let mut rm = RepositoryFactory::manager(io.clone(), &config, None, None, None).unwrap();
+
+    // PHP: foreach ($packageRepos as $packages)
+    for repo_entry in package_repos.as_list().unwrap() {
+        // PHP: isset($packages['type'])
+        if let Some(repo_map) = repo_entry.as_array() {
+            if repo_map.contains_key("type") {
+                let repo = RepositoryFactory::create_repo(
+                    io.clone(),
+                    &config,
+                    repo_map.clone(),
+                    Some(&mut rm),
+                )
+                .unwrap();
+                repository_set.add_repository(repo).unwrap();
+                continue;
+            }
+        }
+
+        let repo = ArrayRepository::new(vec![]).unwrap();
+        let repo_handle = RepositoryInterfaceHandle::new(repo);
+
+        // PHP: isset($packages['canonical']) || isset($packages['only']) || isset($packages['exclude'])
+        let packages_list: Vec<IndexMap<String, PhpMixed>>;
+        if let Some(repo_map) = repo_entry.as_array() {
+            if repo_map.contains_key("canonical")
+                || repo_map.contains_key("only")
+                || repo_map.contains_key("exclude")
+            {
+                let mut options = repo_map.clone();
+                let packages = options
+                    .shift_remove("packages")
+                    .unwrap_or(PhpMixed::List(vec![]));
+                repository_set
+                    .add_repository(RepositoryInterfaceHandle::new(
+                        FilterRepository::new(repo_handle.clone(), options).unwrap(),
+                    ))
+                    .unwrap();
+                packages_list = packages
+                    .as_list()
+                    .map(|l| l.iter().filter_map(|v| v.as_array().cloned()).collect())
+                    .unwrap_or_default();
+            } else {
+                repository_set.add_repository(repo_handle.clone()).unwrap();
+                packages_list = repo_map
+                    .values()
+                    .filter_map(|v| v.as_array().cloned())
+                    .collect();
+            }
+        } else {
+            repository_set.add_repository(repo_handle.clone()).unwrap();
+            packages_list = repo_entry
+                .as_list()
+                .map(|l| l.iter().filter_map(|v| v.as_array().cloned()).collect())
+                .unwrap_or_default();
+        }
+
+        let array_repo = repo_handle.downcast_rc::<ArrayRepository>().unwrap();
+        for package in &packages_list {
+            array_repo
+                .borrow()
+                .add_package(load_package(&loader, &mut package_ids, package))
+                .unwrap();
+        }
+    }
+
+    let locked_repo = LockArrayRepositoryHandle::new(LockArrayRepository::new(vec![]).unwrap());
+    repository_set
+        .add_repository(locked_repo.clone().into())
+        .unwrap();
+
+    let request_map = request_data.as_array().unwrap();
+
+    // PHP: if (isset($requestData['locked']))
+    if let Some(locked) = request_map.get("locked") {
+        for package in locked.as_list().unwrap() {
+            locked_repo
+                .borrow()
+                .add_package(load_package(
+                    &loader,
+                    &mut package_ids,
+                    package.as_array().unwrap(),
+                ))
+                .unwrap();
+        }
+    }
+
+    let mut request = Request::new(Some(locked_repo.clone()));
+    for (package, constraint) in request_map["require"].as_array().unwrap() {
+        request
+            .require_name(
+                package,
+                Some(
+                    parser
+                        .parse_constraints(constraint.as_string().unwrap())
+                        .unwrap(),
+                ),
+            )
+            .unwrap();
+    }
+
+    // PHP: if (isset($requestData['allowList']))
+    if let Some(allow_list) = request_map.get("allowList") {
+        let mut transitive_deps = UpdateAllowTransitiveDeps::UpdateOnlyListed;
+        if request_map
+            .get("allowTransitiveDepsNoRootRequire")
+            .and_then(|v| v.as_bool())
+            .unwrap_or(false)
+        {
+            transitive_deps =
+                UpdateAllowTransitiveDeps::UpdateListedWithTransitiveDepsNoRootRequire;
+        }
+        if request_map
+            .get("allowTransitiveDeps")
+            .and_then(|v| v.as_bool())
+            .unwrap_or(false)
+        {
+            transitive_deps = UpdateAllowTransitiveDeps::UpdateListedWithTransitiveDeps;
+        }
+        let allow_list_names: Vec<String> = allow_list
+            .as_list()
+            .unwrap()
+            .iter()
+            .filter_map(|v| v.as_string().map(|s| s.to_string()))
+            .collect();
+        request.set_update_allow_list(allow_list_names, transitive_deps);
+    }
+
+    // PHP: foreach ($fixed as $fixedPackage)
+    for fixed_package in fixed.as_list().unwrap() {
+        request.fix_package(load_package(
+            &loader,
+            &mut package_ids,
+            fixed_package.as_array().unwrap(),
+        ));
+    }
+
+    let pool = repository_set
+        .create_pool(&mut request, io.clone(), None, None, vec![], None, None)
+        .unwrap();
+
+    let mut result = get_package_result_set(&pool, &package_ids);
+
+    let mut expect = expect.as_list().unwrap().clone();
+    php_sort_mixed(&mut expect);
+    php_sort_mixed(&mut result);
+    assert_eq!(
+        expect, result,
+        "Unoptimized pool does not match expected package set ({})",
+        message
+    );
+
+    let mut optimizer = PoolOptimizer::new(Rc::new(DefaultPolicy::new(false, false, None)));
+    let optimized = optimizer.optimize(&request, &pool);
+    let mut result = get_package_result_set(&optimized, &package_ids);
+    let mut expect_optimized = expect_optimized.as_list().unwrap().clone();
+    php_sort_mixed(&mut expect_optimized);
+    php_sort_mixed(&mut result);
+    assert_eq!(
+        expect_optimized, result,
+        "Optimized pool does not match expected package set ({})",
+        message
+    );
+
+    // PHP: chdir($oldCwd);
+    std::env::set_current_dir(&old_cwd).unwrap();
+}
+
+#[ignore]
 #[test]
-#[ignore = "ArrayLoader::load (single-package, pub) and Pool::count are not exposed: the loadPackage closure calls $loader->load($data) per package and getPackageResultSet uses count($pool)"]
 fn test_pool_builder() {
-    todo!()
+    let fixtures_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+        .join("../../composer/tests/Composer/Test/DependencyResolver/Fixtures/poolbuilder");
+    let fixtures_dir = std::fs::canonicalize(&fixtures_dir).unwrap();
+
+    let tests = get_integration_tests(&fixtures_dir);
+    for (_name, test) in tests {
+        run_test_pool_builder(
+            &fixtures_dir,
+            &test.file,
+            &test.message,
+            &test.expect,
+            &test.expect_optimized,
+            &test.root,
+            &test.request,
+            &test.package_repos,
+            &test.fixed,
+        );
+    }
 }
diff --git a/crates/shirabe/tests/dependency_resolver/solver_test.rs b/crates/shirabe/tests/dependency_resolver/solver_test.rs
index 26f1312..c729fea 100644
--- a/crates/shirabe/tests/dependency_resolver/solver_test.rs
+++ b/crates/shirabe/tests/dependency_resolver/solver_test.rs
@@ -9,11 +9,13 @@ use shirabe::dependency_resolver::default_policy::DefaultPolicy;
 use shirabe::dependency_resolver::request::Request;
 use shirabe::io::io_interface::IOInterface;
 use shirabe::io::null_io::NullIO;
+use shirabe::package::Link;
 use shirabe::package::handle::PackageInterfaceHandle;
 use shirabe::repository::array_repository::ArrayRepository;
 use shirabe::repository::handle::{LockArrayRepositoryHandle, RepositoryInterfaceHandle};
 use shirabe::repository::lock_array_repository::LockArrayRepository;
 use shirabe::repository::repository_set::RepositorySet;
+use shirabe_semver::constraint::{AnyConstraint, MatchAllConstraint, MultiConstraint};
 
 use crate::test_case::{get_alias_package, get_package, get_version_constraint};
 
@@ -50,6 +52,40 @@ fn set_up() -> Fixtures {
     }
 }
 
+/// PHP `new Link($source, $target, $constraint, $type)`: prettyConstraint defaults to
+/// `(string) $constraint`.
+fn link(source: &str, target: &str, constraint: AnyConstraint, r#type: &str) -> Link {
+    let pretty = constraint.get_pretty_string();
+    Link::new(
+        source.to_string(),
+        target.to_string(),
+        constraint,
+        Some(r#type.to_string()),
+        pretty,
+    )
+}
+
+/// PHP `new Link($source, $target, $constraint, $type, $prettyConstraint)`.
+fn link_pretty(
+    source: &str,
+    target: &str,
+    constraint: AnyConstraint,
+    r#type: &str,
+    pretty: &str,
+) -> Link {
+    Link::new(
+        source.to_string(),
+        target.to_string(),
+        constraint,
+        Some(r#type.to_string()),
+        pretty.to_string(),
+    )
+}
+
+fn multi(constraints: Vec<AnyConstraint>) -> AnyConstraint {
+    MultiConstraint::new(constraints, true, None).into()
+}
+
 /// One expected solver job. Mirrors the PHP `['job' => ..., 'package'|'from'|'to' => ...]` rows.
 enum ExpectedJob {
     Single {
@@ -67,7 +103,7 @@ fn check_solver_result(
     mut repo_set: RepositorySet,
     repo: ArrayRepository,
     repo_locked: LockArrayRepositoryHandle,
-    mut request: Request,
+    request: Request,
     expected: Vec<ExpectedJob>,
 ) {
     // reposComplete()
@@ -76,6 +112,15 @@ fn check_solver_result(
         .unwrap();
     repo_set.add_repository(repo_locked.into()).unwrap();
 
+    check_solver_result_repo_set(&mut repo_set, request, expected);
+}
+
+/// ref: SolverTest::checkSolverResult, against an already-completed RepositorySet (createSolver).
+fn check_solver_result_repo_set(
+    repo_set: &mut RepositorySet,
+    mut request: Request,
+    expected: Vec<ExpectedJob>,
+) {
     // createSolver()
     let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
     let pool = repo_set
@@ -137,6 +182,29 @@ fn check_solver_result(
     assert_eq!(expected_ids, result_ids);
 }
 
+/// ref: SolverTest::createSolver + solve, returning the error for expectException-only tests.
+fn solve_expecting_error(
+    mut repo_set: RepositorySet,
+    repo: ArrayRepository,
+    repo_locked: LockArrayRepositoryHandle,
+    mut request: Request,
+) {
+    repo_set
+        .add_repository(RepositoryInterfaceHandle::new(repo))
+        .unwrap();
+    repo_set.add_repository(repo_locked.into()).unwrap();
+
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    let pool = repo_set
+        .create_pool(&mut request, io.clone(), None, None, vec![], None, None)
+        .unwrap();
+    let policy: Rc<dyn PolicyInterface> = Rc::new(DefaultPolicy::new(false, false, None));
+    let mut solver =
+        shirabe::dependency_resolver::solver::Solver::new(policy, Rc::new(RefCell::new(pool)), io);
+
+    assert!(solver.solve(&request, None).is_err());
+}
+
 #[ignore]
 #[test]
 fn test_solver_install_single() {
@@ -178,7 +246,7 @@ fn test_solver_remove_if_not_requested() {
     );
 }
 
-#[ignore = "solve() error path discards SolverProblemsException (returns placeholder anyhow error); getProblems/getCode/getPrettyString not retrievable"]
+#[ignore = "asserts SolverProblemsException details (getProblems/getCode/getPrettyString) which solve() discards"]
 #[test]
 fn test_install_non_existing_package_fails() {
     let _fixtures = set_up();
@@ -222,40 +290,364 @@ fn test_solver_install_same_package_from_different_repositories() {
     );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_install_with_deps() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    let new_package_b = get_package("B", "1.1");
+    fixtures.repo.add_package(new_package_b.clone()).unwrap();
+
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint("<", "1.1"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_install_honours_not_equal_operator() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    let new_package_b11 = get_package("B", "1.1");
+    fixtures.repo.add_package(new_package_b11.clone()).unwrap();
+    let new_package_b12 = get_package("B", "1.2");
+    fixtures.repo.add_package(new_package_b12.clone()).unwrap();
+    let new_package_b13 = get_package("B", "1.3");
+    fixtures.repo.add_package(new_package_b13.clone()).unwrap();
+
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                multi(vec![
+                    get_version_constraint("<=", "1.3"),
+                    get_version_constraint("<>", "1.3"),
+                    get_version_constraint("!=", "1.2"),
+                ]),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: new_package_b11,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_install_with_deps_in_order() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    let package_c = get_package("C", "1.0");
+    fixtures.repo.add_package(package_c.clone()).unwrap();
+
+    package_b
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([
+            (
+                "a".to_string(),
+                link(
+                    "B",
+                    "A",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "c".to_string(),
+                link(
+                    "B",
+                    "C",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+        ]));
+    package_c
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "C",
+                "A",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+    request.require_name("B", None).unwrap();
+    request.require_name("C", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_c,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_multi_package_name_version_resolution_depends_on_require_order() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let php74 = get_package("ourcustom/PHP", "7.4.23");
+    fixtures.repo.add_package(php74.clone()).unwrap();
+    let php80 = get_package("ourcustom/PHP", "8.0.10");
+    fixtures.repo.add_package(php80.clone()).unwrap();
+    let ext_for_php74 = get_package("ourcustom/ext-foobar", "1.0");
+    fixtures.repo.add_package(ext_for_php74.clone()).unwrap();
+    let ext_for_php80 = get_package("ourcustom/ext-foobar", "1.0");
+    fixtures.repo.add_package(ext_for_php80.clone()).unwrap();
+
+    ext_for_php74
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "ourcustom/php".to_string(),
+            link(
+                "ourcustom/ext-foobar",
+                "ourcustom/PHP",
+                multi(vec![
+                    get_version_constraint(">=", "7.4.0"),
+                    get_version_constraint("<", "7.5.0"),
+                ]),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    ext_for_php80
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "ourcustom/php".to_string(),
+            link(
+                "ourcustom/ext-foobar",
+                "ourcustom/PHP",
+                multi(vec![
+                    get_version_constraint(">=", "8.0.0"),
+                    get_version_constraint("<", "8.1.0"),
+                ]),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    // reposComplete()
+    let mut repo_set = fixtures.repo_set;
+    repo_set
+        .add_repository(RepositoryInterfaceHandle::new(fixtures.repo))
+        .unwrap();
+    repo_set
+        .add_repository(fixtures.repo_locked.clone().into())
+        .unwrap();
+
+    let mut request = fixtures.request;
+    request.require_name("ourcustom/PHP", None).unwrap();
+    request.require_name("ourcustom/ext-foobar", None).unwrap();
+
+    check_solver_result_repo_set(
+        &mut repo_set,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: php80.clone(),
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: ext_for_php80,
+            },
+        ],
+    );
+
+    // now we flip the requirements around: we request "ext-foobar" before "php"
+    let mut request = Request::new(Some(fixtures.repo_locked.clone()));
+    request.require_name("ourcustom/ext-foobar", None).unwrap();
+    request.require_name("ourcustom/PHP", None).unwrap();
+
+    check_solver_result_repo_set(
+        &mut repo_set,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: php74,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: ext_for_php74,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_multi_package_name_version_resolution_is_independent_of_require_order_if_ordered_descending_by_requirement()
  {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let php74 = get_package("ourcustom/PHP", "7.4");
+    fixtures.repo.add_package(php74.clone()).unwrap();
+    let php80 = get_package("ourcustom/PHP", "8.0");
+    fixtures.repo.add_package(php80.clone()).unwrap();
+    // note we are inserting this one into the repo first, unlike in the previous test
+    let ext_for_php80 = get_package("ourcustom/ext-foobar", "1.0");
+    fixtures.repo.add_package(ext_for_php80.clone()).unwrap();
+    let ext_for_php74 = get_package("ourcustom/ext-foobar", "1.0");
+    fixtures.repo.add_package(ext_for_php74.clone()).unwrap();
+
+    ext_for_php80
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "ourcustom/php".to_string(),
+            link(
+                "ourcustom/ext-foobar",
+                "ourcustom/PHP",
+                multi(vec![
+                    get_version_constraint(">=", "8.0.0"),
+                    get_version_constraint("<", "8.1.0"),
+                ]),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    ext_for_php74
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "ourcustom/php".to_string(),
+            link(
+                "ourcustom/ext-foobar",
+                "ourcustom/PHP",
+                multi(vec![
+                    get_version_constraint(">=", "7.4.0"),
+                    get_version_constraint("<", "7.5.0"),
+                ]),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    // reposComplete()
+    let mut repo_set = fixtures.repo_set;
+    repo_set
+        .add_repository(RepositoryInterfaceHandle::new(fixtures.repo))
+        .unwrap();
+    repo_set
+        .add_repository(fixtures.repo_locked.clone().into())
+        .unwrap();
+
+    let mut request = fixtures.request;
+    request.require_name("ourcustom/PHP", None).unwrap();
+    request.require_name("ourcustom/ext-foobar", None).unwrap();
+
+    check_solver_result_repo_set(
+        &mut repo_set,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: php80.clone(),
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: ext_for_php80.clone(),
+            },
+        ],
+    );
+
+    // unlike in the previous test, the order of requirements no longer matters now
+    let mut request = Request::new(Some(fixtures.repo_locked.clone()));
+    request.require_name("ourcustom/ext-foobar", None).unwrap();
+    request.require_name("ourcustom/PHP", None).unwrap();
+
+    check_solver_result_repo_set(
+        &mut repo_set,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: php80,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: ext_for_php80,
+            },
+        ],
+    );
 }
 
 #[ignore]
@@ -297,11 +689,46 @@ fn test_solver_fix_locked_with_alternative() {
     );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_update_does_only_update() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo_locked.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo_locked.add_package(package_b.clone()).unwrap();
+    let new_package_b = get_package("B", "1.1");
+    fixtures.repo.add_package(new_package_b.clone()).unwrap();
+
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "1.0.0.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.fix_package(package_a.clone());
+    request
+        .require_name("B", Some(get_version_constraint("=", "1.1.0.0")))
+        .unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![ExpectedJob::Update {
+            from: package_b,
+            to: new_package_b,
+        }],
+    );
 }
 
 #[ignore]
@@ -328,11 +755,63 @@ fn test_solver_update_single() {
     );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_update_all() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo_locked.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo_locked.add_package(package_b.clone()).unwrap();
+    let new_package_a = get_package("A", "1.1");
+    fixtures.repo.add_package(new_package_a.clone()).unwrap();
+    let new_package_b = get_package("B", "1.1");
+    fixtures.repo.add_package(new_package_b.clone()).unwrap();
+
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                MatchAllConstraint::new(None).into(),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    new_package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                MatchAllConstraint::new(None).into(),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Update {
+                from: package_b,
+                to: new_package_b,
+            },
+            ExpectedJob::Update {
+                from: package_a,
+                to: new_package_a,
+            },
+        ],
+    );
 }
 
 #[ignore]
@@ -475,25 +954,168 @@ fn test_solver_update_fully_constrained_prunes_installed_packages() {
     );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_all_jobs() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_d = get_package("D", "1.0");
+    fixtures.repo_locked.add_package(package_d.clone()).unwrap();
+    let old_package_c = get_package("C", "1.0");
+    fixtures
+        .repo_locked
+        .add_package(old_package_c.clone())
+        .unwrap();
+
+    let package_a = get_package("A", "2.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    let new_package_b = get_package("B", "1.1");
+    fixtures.repo.add_package(new_package_b.clone()).unwrap();
+    let package_c = get_package("C", "1.1");
+    fixtures.repo.add_package(package_c.clone()).unwrap();
+    fixtures.repo.add_package(get_package("D", "1.0")).unwrap();
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint("<", "1.1"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+    request.require_name("C", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "remove",
+                package: package_d,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+            ExpectedJob::Update {
+                from: old_package_c,
+                to: package_c,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires/setConflicts not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_three_alternative_require_and_conflict() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "2.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let middle_package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(middle_package_b.clone()).unwrap();
+    let new_package_b = get_package("B", "1.1");
+    fixtures.repo.add_package(new_package_b.clone()).unwrap();
+    let old_package_b = get_package("B", "0.9");
+    fixtures.repo.add_package(old_package_b.clone()).unwrap();
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint("<", "1.1"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_conflicts(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint("<", "1.0"),
+                Link::TYPE_CONFLICT,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: middle_package_b,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+        ],
+    );
 }
 
-#[ignore = "setReplaces not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_solver_obsolete() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo_locked.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    package_b
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "B",
+                "A",
+                MatchAllConstraint::new(None).into(),
+                Link::TYPE_REPLACE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("B", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "remove",
+                package: package_a,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b,
+            },
+        ],
+    );
 }
 
 #[ignore]
@@ -520,109 +1142,925 @@ fn test_install_one_of_two_alternatives() {
     );
 }
 
-#[ignore = "setRequires/setProvides not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_install_provider() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_q = get_package("Q", "1.0");
+    fixtures.repo.add_package(package_q.clone()).unwrap();
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_q
+        .as_complete_package()
+        .unwrap()
+        .__set_provides(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "Q",
+                "B",
+                get_version_constraint("=", "1.0"),
+                Link::TYPE_PROVIDE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    // must explicitly pick the provider, so error in this case
+    solve_expecting_error(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+    );
 }
 
-#[ignore = "setRequires/setReplaces not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_skip_replacer_of_existing_package() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_q = get_package("Q", "1.0");
+    fixtures.repo.add_package(package_q.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_q
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "Q",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REPLACE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires/setReplaces not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_no_install_replacer_of_missing_package() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_q = get_package("Q", "1.0");
+    fixtures.repo.add_package(package_q.clone()).unwrap();
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_q
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "Q",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REPLACE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    solve_expecting_error(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+    );
 }
 
-#[ignore = "setRequires/setReplaces not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_skip_replaced_package_if_replacer_is_selected() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_q = get_package("Q", "1.0");
+    fixtures.repo.add_package(package_q.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_q
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "Q",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REPLACE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+    request.require_name("Q", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_q,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires/setReplaces not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_pick_older_if_newer_conflicts() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_x = get_package("X", "1.0");
+    fixtures.repo.add_package(package_x.clone()).unwrap();
+    package_x
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([
+            (
+                "a".to_string(),
+                link(
+                    "X",
+                    "A",
+                    get_version_constraint(">=", "2.0.0.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "b".to_string(),
+                link(
+                    "X",
+                    "B",
+                    get_version_constraint(">=", "2.0.0.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+        ]));
+
+    let package_a = get_package("A", "2.0.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let new_package_a = get_package("A", "2.1.0");
+    fixtures.repo.add_package(new_package_a.clone()).unwrap();
+    let new_package_b = get_package("B", "2.1.0");
+    fixtures.repo.add_package(new_package_b.clone()).unwrap();
+
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "2.0.0.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    // new package A depends on version of package B that does not exist
+    // => new package A is not installable
+    new_package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "2.2.0.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    // add a package S replacing both A and B, so that S and B or S and A cannot be simultaneously installed
+    // but an alternative option for A and B both exists
+    // this creates a more difficult so solve conflict
+    let package_s = get_package("S", "2.0.0");
+    fixtures.repo.add_package(package_s.clone()).unwrap();
+    package_s
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([
+            (
+                "a".to_string(),
+                link(
+                    "S",
+                    "A",
+                    get_version_constraint(">=", "2.0.0.0"),
+                    Link::TYPE_REPLACE,
+                ),
+            ),
+            (
+                "b".to_string(),
+                link(
+                    "S",
+                    "B",
+                    get_version_constraint(">=", "2.0.0.0"),
+                    Link::TYPE_REPLACE,
+                ),
+            ),
+        ]));
+
+    let mut request = fixtures.request;
+    request.require_name("X", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: new_package_b,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_x,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_install_circular_require() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b1 = get_package("B", "0.9");
+    fixtures.repo.add_package(package_b1.clone()).unwrap();
+    let package_b2 = get_package("B", "1.1");
+    fixtures.repo.add_package(package_b2.clone()).unwrap();
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_b2
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "B",
+                "A",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b2,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires/setProvides not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_install_alternative_with_circular_require() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    let package_c = get_package("C", "1.0");
+    fixtures.repo.add_package(package_c.clone()).unwrap();
+    let package_d = get_package("D", "1.0");
+    fixtures.repo.add_package(package_d.clone()).unwrap();
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link(
+                "A",
+                "B",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_b
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "virtual".to_string(),
+            link(
+                "B",
+                "Virtual",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_c
+        .as_complete_package()
+        .unwrap()
+        .__set_provides(IndexMap::from([(
+            "virtual".to_string(),
+            link(
+                "C",
+                "Virtual",
+                get_version_constraint("==", "1.0"),
+                Link::TYPE_PROVIDE,
+            ),
+        )]));
+    package_d
+        .as_complete_package()
+        .unwrap()
+        .__set_provides(IndexMap::from([(
+            "virtual".to_string(),
+            link(
+                "D",
+                "Virtual",
+                get_version_constraint("==", "1.0"),
+                Link::TYPE_PROVIDE,
+            ),
+        )]));
+
+    package_c
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "C",
+                "A",
+                get_version_constraint("==", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_d
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "D",
+                "A",
+                get_version_constraint("==", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+    request.require_name("C", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_c,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires/setReplaces not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_use_replacer_if_necessary() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    let package_d = get_package("D", "1.0");
+    fixtures.repo.add_package(package_d.clone()).unwrap();
+    let package_d2 = get_package("D", "1.1");
+    fixtures.repo.add_package(package_d2.clone()).unwrap();
+
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([
+            (
+                "b".to_string(),
+                link(
+                    "A",
+                    "B",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "c".to_string(),
+                link(
+                    "A",
+                    "C",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+        ]));
+
+    package_d
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([
+            (
+                "b".to_string(),
+                link(
+                    "D",
+                    "B",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REPLACE,
+                ),
+            ),
+            (
+                "c".to_string(),
+                link(
+                    "D",
+                    "C",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REPLACE,
+                ),
+            ),
+        ]));
+
+    package_d2
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([
+            (
+                "b".to_string(),
+                link(
+                    "D",
+                    "B",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REPLACE,
+                ),
+            ),
+            (
+                "c".to_string(),
+                link(
+                    "D",
+                    "C",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REPLACE,
+                ),
+            ),
+        ]));
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+    request.require_name("D", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_d2,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires/setReplaces not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_issue265() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a1 = get_package("A", "2.0.999999-dev");
+    fixtures.repo.add_package(package_a1.clone()).unwrap();
+    let package_a2 = get_package("A", "2.1-dev");
+    fixtures.repo.add_package(package_a2.clone()).unwrap();
+    let package_a3 = get_package("A", "2.2-dev");
+    fixtures.repo.add_package(package_a3.clone()).unwrap();
+    let package_b1 = get_package("B", "2.0.10");
+    fixtures.repo.add_package(package_b1.clone()).unwrap();
+    let package_b2 = get_package("B", "2.0.9");
+    fixtures.repo.add_package(package_b2.clone()).unwrap();
+    let package_c = get_package("C", "2.0-dev");
+    fixtures.repo.add_package(package_c.clone()).unwrap();
+    let package_d = get_package("D", "2.0.9");
+    fixtures.repo.add_package(package_d.clone()).unwrap();
+
+    package_c
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([
+            (
+                "a".to_string(),
+                link(
+                    "C",
+                    "A",
+                    get_version_constraint(">=", "2.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "d".to_string(),
+                link(
+                    "C",
+                    "D",
+                    get_version_constraint(">=", "2.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+        ]));
+
+    package_d
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([
+            (
+                "a".to_string(),
+                link(
+                    "D",
+                    "A",
+                    get_version_constraint(">=", "2.1"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "b".to_string(),
+                link(
+                    "D",
+                    "B",
+                    get_version_constraint(">=", "2.0-dev"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+        ]));
+
+    package_b1
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "B",
+                "A",
+                get_version_constraint("==", "2.1.0.0-dev"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_b2
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "B",
+                "A",
+                get_version_constraint("==", "2.1.0.0-dev"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    package_b2
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([(
+            "d".to_string(),
+            link(
+                "B",
+                "D",
+                get_version_constraint("==", "2.0.9.0"),
+                Link::TYPE_REPLACE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request
+        .require_name("C", Some(get_version_constraint("==", "2.0.0.0-dev")))
+        .unwrap();
+
+    solve_expecting_error(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+    );
 }
 
-#[ignore = "setConflicts not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore = "asserts SolverProblemsException details (getProblems/getPrettyString) which solve() discards"]
 #[test]
 fn test_conflict_result_empty() {
     let _fixtures = set_up();
     todo!()
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle; also asserts SolverProblemsException details which solve() discards"]
+#[ignore = "asserts SolverProblemsException details (getProblems/getPrettyString) which solve() discards"]
 #[test]
 fn test_unsatisfiable_requires() {
     let _fixtures = set_up();
     todo!()
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle; also asserts SolverProblemsException details which solve() discards"]
+#[ignore = "asserts SolverProblemsException details (getProblems/getPrettyString) which solve() discards"]
 #[test]
 fn test_require_mismatch_exception() {
     let _fixtures = set_up();
     todo!()
 }
 
-#[ignore = "setRequires/setReplaces not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_learn_literals_with_sorted_rule_literals() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_twig2 = get_package("twig/twig", "2.0");
+    fixtures.repo.add_package(package_twig2.clone()).unwrap();
+    let package_twig16 = get_package("twig/twig", "1.6");
+    fixtures.repo.add_package(package_twig16.clone()).unwrap();
+    let package_twig15 = get_package("twig/twig", "1.5");
+    fixtures.repo.add_package(package_twig15.clone()).unwrap();
+    let package_symfony = get_package("symfony/symfony", "2.0");
+    fixtures.repo.add_package(package_symfony.clone()).unwrap();
+    let package_twig_bridge = get_package("symfony/twig-bridge", "2.0");
+    fixtures
+        .repo
+        .add_package(package_twig_bridge.clone())
+        .unwrap();
+
+    package_twig_bridge
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "twig/twig".to_string(),
+            link(
+                "symfony/twig-bridge",
+                "twig/twig",
+                get_version_constraint("<", "2.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    package_symfony
+        .as_complete_package()
+        .unwrap()
+        .__set_replaces(IndexMap::from([(
+            "symfony/twig-bridge".to_string(),
+            link(
+                "symfony/symfony",
+                "symfony/twig-bridge",
+                get_version_constraint("==", "2.0"),
+                Link::TYPE_REPLACE,
+            ),
+        )]));
+
+    let mut request = fixtures.request;
+    request.require_name("symfony/twig-bridge", None).unwrap();
+    request.require_name("twig/twig", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_twig16,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_twig_bridge,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_install_recursive_alias_dependencies() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "2.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    let package_a2 = get_package("A", "2.0");
+    fixtures.repo.add_package(package_a2.clone()).unwrap();
+
+    package_a2
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "b".to_string(),
+            link_pretty(
+                "A",
+                "B",
+                get_version_constraint("==", "2.0"),
+                Link::TYPE_REQUIRE,
+                "== 2.0",
+            ),
+        )]));
+    package_b
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "B",
+                "A",
+                get_version_constraint(">=", "2.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let package_a2_alias = get_alias_package(&package_a2, "1.1");
+    fixtures.repo.add_package(package_a2_alias.clone()).unwrap();
+
+    let mut request = fixtures.request;
+    request
+        .require_name("A", Some(get_version_constraint("==", "1.1.0.0")))
+        .unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a2,
+            },
+            ExpectedJob::Single {
+                job: "markAliasInstalled",
+                package: package_a2_alias,
+            },
+        ],
+    );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_install_dev_alias() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "2.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+
+    package_b
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "a".to_string(),
+            link(
+                "B",
+                "A",
+                get_version_constraint("<", "2.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    let package_a_alias = get_alias_package(&package_a, "1.1");
+    fixtures.repo.add_package(package_a_alias.clone()).unwrap();
+
+    let mut request = fixtures.request;
+    request
+        .require_name("A", Some(get_version_constraint("==", "2.0")))
+        .unwrap();
+    request.require_name("B", None).unwrap();
+
+    check_solver_result(
+        fixtures.repo_set,
+        fixtures.repo,
+        fixtures.repo_locked,
+        request,
+        vec![
+            ExpectedJob::Single {
+                job: "install",
+                package: package_a,
+            },
+            ExpectedJob::Single {
+                job: "markAliasInstalled",
+                package: package_a_alias,
+            },
+            ExpectedJob::Single {
+                job: "install",
+                package: package_b,
+            },
+        ],
+    );
 }
 
 #[ignore]
@@ -699,9 +2137,200 @@ fn test_install_root_aliases_if_alias_of_is_installed() {
     );
 }
 
-#[ignore = "setRequires not available on CompletePackageHandle (only RootPackageHandle exposes link setters)"]
+#[ignore]
 #[test]
 fn test_learn_positive_literal() {
-    let _fixtures = set_up();
-    todo!()
+    let fixtures = set_up();
+    let package_a = get_package("A", "1.0");
+    fixtures.repo.add_package(package_a.clone()).unwrap();
+    let package_b = get_package("B", "1.0");
+    fixtures.repo.add_package(package_b.clone()).unwrap();
+    let package_c1 = get_package("C", "1.0");
+    fixtures.repo.add_package(package_c1.clone()).unwrap();
+    let package_c2 = get_package("C", "2.0");
+    fixtures.repo.add_package(package_c2.clone()).unwrap();
+    let package_d = get_package("D", "1.0");
+    fixtures.repo.add_package(package_d.clone()).unwrap();
+    let package_e = get_package("E", "1.0");
+    fixtures.repo.add_package(package_e.clone()).unwrap();
+    let package_f1 = get_package("F", "1.0");
+    fixtures.repo.add_package(package_f1.clone()).unwrap();
+    let package_f2 = get_package("F", "2.0");
+    fixtures.repo.add_package(package_f2.clone()).unwrap();
+    let package_g1 = get_package("G", "1.0");
+    fixtures.repo.add_package(package_g1.clone()).unwrap();
+    let package_g2 = get_package("G", "2.0");
+    fixtures.repo.add_package(package_g2.clone()).unwrap();
+    let package_g3 = get_package("G", "3.0");
+    fixtures.repo.add_package(package_g3.clone()).unwrap();
+
+    package_a
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([
+            (
+                "b".to_string(),
+                link(
+                    "A",
+                    "B",
+                    get_version_constraint("==", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "c".to_string(),
+                link(
+                    "A",
+                    "C",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "d".to_string(),
+                link(
+                    "A",
+                    "D",
+                    get_version_constraint("==", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+        ]));
+
+    package_b
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "e".to_string(),
+            link(
+                "B",
+                "E",
+                get_version_constraint("==", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    package_c1
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "f".to_string(),
+            link(
+                "C",
+                "F",
+                get_version_constraint("==", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    package_c2
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([
+            (
+                "f".to_string(),
+                link(
+                    "C",
+                    "F",
+                    get_version_constraint("==", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "g".to_string(),
+                link(
+                    "C",
+                    "G",
+                    get_version_constraint(">=", "1.0"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+        ]));
+
+    package_d
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "f".to_string(),
+            link(
+                "D",
+                "F",
+                get_version_constraint(">=", "1.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    package_e
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "g".to_string(),
+            link(
+                "E",
+                "G",
+                get_version_constraint("<=", "2.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+
+    // reposComplete() + createSolver() inline so the testFlagLearnedPositiveLiteral flag can be
+    // asserted on the same solver instance used to solve.
+    let mut repo_set = fixtures.repo_set;
+    repo_set
+        .add_repository(RepositoryInterfaceHandle::new(fixtures.repo))
+        .unwrap();
+    repo_set
+        .add_repository(fixtures.repo_locked.into())
+        .unwrap();
+
+    let mut request = fixtures.request;
+    request.require_name("A", None).unwrap();
+
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    let pool = repo_set
+        .create_pool(&mut request, io.clone(), None, None, vec![], None, None)
+        .unwrap();
+    let policy: Rc<dyn PolicyInterface> = Rc::new(DefaultPolicy::new(false, false, None));
+    let mut solver =
+        shirabe::dependency_resolver::solver::Solver::new(policy, Rc::new(RefCell::new(pool)), io);
+
+    // check correct setup for assertion later
+    assert!(!solver.test_flag_learned_positive_literal);
+
+    let transaction = solver.solve(&request, None).unwrap();
+
+    let expected = vec![
+        ("install".to_string(), package_f1.get_unique_name()),
+        ("install".to_string(), package_d.get_unique_name()),
+        ("install".to_string(), package_g2.get_unique_name()),
+        ("install".to_string(), package_c2.get_unique_name()),
+        ("install".to_string(), package_e.get_unique_name()),
+        ("install".to_string(), package_b.get_unique_name()),
+        ("install".to_string(), package_a.get_unique_name()),
+    ];
+    let mut result: Vec<(String, String)> = Vec::new();
+    for operation in transaction.get_operations() {
+        if let Some(update) = operation.as_update_operation() {
+            result.push((
+                "update".to_string(),
+                format!(
+                    "{} => {}",
+                    update.get_initial_package().get_unique_name(),
+                    update.get_target_package().get_unique_name()
+                ),
+            ));
+        } else {
+            let op_type = operation.get_operation_type();
+            let job = if op_type == "uninstall" {
+                "remove".to_string()
+            } else {
+                op_type
+            };
+            result.push((job, operation.get_package().get_unique_name()));
+        }
+    }
+    assert_eq!(expected, result);
+
+    // verify that the code path leading to a negative literal resulting in a positive learned
+    // literal is actually executed
+    assert!(solver.test_flag_learned_positive_literal);
 }
diff --git a/crates/shirabe/tests/dependency_resolver/transaction_test.rs b/crates/shirabe/tests/dependency_resolver/transaction_test.rs
index a5ca310..7013816 100644
--- a/crates/shirabe/tests/dependency_resolver/transaction_test.rs
+++ b/crates/shirabe/tests/dependency_resolver/transaction_test.rs
@@ -1,7 +1,286 @@
 //! ref: composer/tests/Composer/Test/DependencyResolver/TransactionTest.php
 
+use indexmap::IndexMap;
+use shirabe::dependency_resolver::transaction::Transaction;
+use shirabe::package::Link;
+use shirabe::package::handle::PackageInterfaceHandle;
+use shirabe_php_shim::PhpMixed;
+
+use crate::test_case::{get_alias_package, get_package, get_version_constraint};
+
+/// PHP `new Link($source, $target, $constraint, $type)`: prettyConstraint defaults to
+/// `(string) $constraint`.
+fn mk_link(
+    source: &str,
+    target: &str,
+    constraint: shirabe_semver::constraint::AnyConstraint,
+    r#type: &str,
+) -> Link {
+    let pretty = constraint.get_pretty_string();
+    Link::new(
+        source.to_string(),
+        target.to_string(),
+        constraint,
+        Some(r#type.to_string()),
+        pretty,
+    )
+}
+
+/// Mirrors a PHP expected/actual operation entry.
+#[derive(Debug)]
+enum OperationEntry {
+    Job {
+        job: String,
+        package: PackageInterfaceHandle,
+    },
+    Update {
+        from: PackageInterfaceHandle,
+        to: PackageInterfaceHandle,
+    },
+}
+
+impl PartialEq for OperationEntry {
+    fn eq(&self, other: &Self) -> bool {
+        match (self, other) {
+            (
+                Self::Job {
+                    job: j1,
+                    package: p1,
+                },
+                Self::Job {
+                    job: j2,
+                    package: p2,
+                },
+            ) => j1 == j2 && p1.ptr_eq(p2),
+            (Self::Update { from: f1, to: t1 }, Self::Update { from: f2, to: t2 }) => {
+                f1.ptr_eq(f2) && t1.ptr_eq(t2)
+            }
+            _ => false,
+        }
+    }
+}
+
+fn check_transaction_operations(transaction: &Transaction, expected: Vec<OperationEntry>) {
+    let mut result: Vec<OperationEntry> = vec![];
+    for operation in transaction.get_operations() {
+        if let Some(update) = operation.as_update_operation() {
+            result.push(OperationEntry::Update {
+                from: update.get_initial_package(),
+                to: update.get_target_package(),
+            });
+        } else {
+            result.push(OperationEntry::Job {
+                job: operation.get_operation_type(),
+                package: operation.get_package(),
+            });
+        }
+    }
+
+    assert_eq!(expected, result);
+}
+
 #[test]
-#[ignore = "CompletePackageHandle lacks set_type/set_requires/set_provides/set_extra; these setters exist only on RootPackageHandle, so the non-root package fixture cannot be expressed"]
+#[ignore]
 fn test_transaction_generation_and_sorting() {
-    todo!()
+    let package_a = get_package("a/a", "dev-master");
+    let package_a_alias = get_alias_package(&package_a, "1.0.x-dev");
+    let package_b = get_package("b/b", "1.0.0");
+    let package_e = get_package("e/e", "dev-foo");
+    let package_e_alias = get_alias_package(&package_e, "1.0.x-dev");
+    let package_c = get_package("c/c", "1.0.0");
+    let present_packages = vec![
+        package_a.clone(),
+        package_a_alias.clone(),
+        package_b.clone(),
+        package_e.clone(),
+        package_e_alias.clone(),
+        package_c.clone(),
+    ];
+
+    let package_b_new = get_package("b/b", "2.1.3");
+    let package_d = get_package("d/d", "1.2.3");
+    let package_f = get_package("f/f", "1.0.0");
+    let package_f_alias1 = get_alias_package(&package_f, "dev-foo");
+    let package_g = get_package("g/g", "1.0.0");
+    let package_a0_first = get_package("a0/first", "1.2.3");
+    let package_f_alias2 = get_alias_package(&package_f, "dev-bar");
+    let plugin = get_package("x/plugin", "1.0.0");
+    let plugin2_dep = get_package("x/plugin2-dep", "1.0.0");
+    let plugin2 = get_package("x/plugin2", "1.0.0");
+    let dl_modifying_plugin = get_package("x/downloads-modifying", "1.0.0");
+    let dl_modifying_plugin2_dep = get_package("x/downloads-modifying2-dep", "1.0.0");
+    let dl_modifying_plugin2 = get_package("x/downloads-modifying2", "1.0.0");
+    let result_packages = vec![
+        package_a.clone(),
+        package_a_alias.clone(),
+        package_b_new.clone(),
+        package_d.clone(),
+        package_f.clone(),
+        package_f_alias1.clone(),
+        package_g.clone(),
+        package_a0_first.clone(),
+        package_f_alias2.clone(),
+        plugin.clone(),
+        plugin2_dep.clone(),
+        plugin2.clone(),
+        dl_modifying_plugin.clone(),
+        dl_modifying_plugin2_dep.clone(),
+        dl_modifying_plugin2.clone(),
+    ];
+
+    plugin
+        .as_complete_package()
+        .unwrap()
+        .__set_type("composer-installer".to_string());
+    for plugin_package in [&plugin2, &dl_modifying_plugin, &dl_modifying_plugin2] {
+        plugin_package
+            .as_complete_package()
+            .unwrap()
+            .__set_type("composer-plugin".to_string());
+    }
+
+    plugin2
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "x/plugin2-dep".to_string(),
+            mk_link(
+                "x/plugin2",
+                "x/plugin2-dep",
+                get_version_constraint("=", "1.0.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    dl_modifying_plugin2
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([(
+            "x/downloads-modifying2-dep".to_string(),
+            mk_link(
+                "x/downloads-modifying2",
+                "x/downloads-modifying2-dep",
+                get_version_constraint("=", "1.0.0"),
+                Link::TYPE_REQUIRE,
+            ),
+        )]));
+    dl_modifying_plugin
+        .as_complete_package()
+        .unwrap()
+        .__set_extra(IndexMap::from([(
+            "plugin-modifies-downloads".to_string(),
+            PhpMixed::Bool(true),
+        )]));
+    dl_modifying_plugin2
+        .as_complete_package()
+        .unwrap()
+        .__set_extra(IndexMap::from([(
+            "plugin-modifies-downloads".to_string(),
+            PhpMixed::Bool(true),
+        )]));
+
+    package_d
+        .as_complete_package()
+        .unwrap()
+        .__set_requires(IndexMap::from([
+            (
+                "f/f".to_string(),
+                mk_link(
+                    "d/d",
+                    "f/f",
+                    get_version_constraint(">", "0.2"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+            (
+                "g/provider".to_string(),
+                mk_link(
+                    "d/d",
+                    "g/provider",
+                    get_version_constraint(">", "0.2"),
+                    Link::TYPE_REQUIRE,
+                ),
+            ),
+        ]));
+    package_g
+        .as_complete_package()
+        .unwrap()
+        .__set_provides(IndexMap::from([(
+            "g/provider".to_string(),
+            mk_link(
+                "g/g",
+                "g/provider",
+                get_version_constraint("==", "1.0.0"),
+                Link::TYPE_PROVIDE,
+            ),
+        )]));
+
+    let expected_operations = vec![
+        OperationEntry::Job {
+            job: "uninstall".to_string(),
+            package: package_c.clone(),
+        },
+        OperationEntry::Job {
+            job: "uninstall".to_string(),
+            package: package_e.clone(),
+        },
+        OperationEntry::Job {
+            job: "markAliasUninstalled".to_string(),
+            package: package_e_alias.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: dl_modifying_plugin.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: dl_modifying_plugin2_dep.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: dl_modifying_plugin2.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: plugin.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: plugin2_dep.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: plugin2.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: package_a0_first.clone(),
+        },
+        OperationEntry::Update {
+            from: package_b.clone(),
+            to: package_b_new.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: package_g.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: package_f.clone(),
+        },
+        OperationEntry::Job {
+            job: "markAliasInstalled".to_string(),
+            package: package_f_alias2.clone(),
+        },
+        OperationEntry::Job {
+            job: "markAliasInstalled".to_string(),
+            package: package_f_alias1.clone(),
+        },
+        OperationEntry::Job {
+            job: "install".to_string(),
+            package: package_d.clone(),
+        },
+    ];
+
+    let transaction = Transaction::new(present_packages, result_packages);
+    check_transaction_operations(&transaction, expected_operations);
 }
diff --git a/crates/shirabe/tests/downloader/archive_downloader_test.rs b/crates/shirabe/tests/downloader/archive_downloader_test.rs
index dfba3bf..7062d48 100644
--- a/crates/shirabe/tests/downloader/archive_downloader_test.rs
+++ b/crates/shirabe/tests/downloader/archive_downloader_test.rs
@@ -1,41 +1,174 @@
 //! ref: composer/tests/Composer/Test/Downloader/ArchiveDownloaderTest.php
 
-// These exercise getFileName/processUrl on an anonymous ArchiveDownloader subclass built
-// with a mocked IO and a real HttpDownloader (curl_multi_init is todo!()), and pass mocked
-// packages.
+// The PHP test builds an anonymous ArchiveDownloader subclass; getFileName/processUrl are
+// inherited unchanged from FileDownloader, so the concrete FileDownloader is exercised here
+// directly. The PHP mocks of IOInterface/Config/PackageInterface are replaced by a NullIO, a
+// real Config merged with `vendor-dir`, and real CompletePackage instances with dist
+// url/reference set.
+
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use indexmap::IndexMap;
+use shirabe::config::Config;
+use shirabe::downloader::FileDownloader;
+use shirabe::io::IOInterface;
+use shirabe::io::null_io::NullIO;
+use shirabe::package::handle::{CompletePackageHandle, PackageInterfaceHandle};
+use shirabe::util::HttpDownloader;
+use shirabe_php_shim::PhpMixed;
+use shirabe_semver::version_parser::VersionParser;
+
+/// ref: TestCase::getPackage (default class CompletePackage)
+fn get_package(name: &str, version: &str) -> PackageInterfaceHandle {
+    let norm_version = VersionParser.normalize(version, None).unwrap();
+    CompletePackageHandle::new(name.to_string(), norm_version, version.to_string()).into()
+}
+
+/// ref: ArchiveDownloaderTest::getArchiveDownloaderMock (the inherited getFileName/processUrl
+/// live on FileDownloader, so the concrete downloader is built directly).
+fn get_archive_downloader(vendor_dir: Option<&str>) -> FileDownloader {
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+
+    let mut config = Config::new(false, None);
+    if let Some(vendor_dir) = vendor_dir {
+        let mut config_options: IndexMap<String, PhpMixed> = IndexMap::new();
+        config_options.insert(
+            "vendor-dir".to_string(),
+            PhpMixed::String(vendor_dir.to_string()),
+        );
+        let mut merged: IndexMap<String, PhpMixed> = IndexMap::new();
+        merged.insert("config".to_string(), PhpMixed::Array(config_options));
+        config.merge(&merged, "test");
+    }
+    let config = Rc::new(RefCell::new(config));
+
+    let http_downloader = Rc::new(RefCell::new(HttpDownloader::new(
+        io.clone(),
+        config.clone(),
+        IndexMap::new(),
+        false,
+    )));
+
+    FileDownloader::new(io, config, http_downloader, None, None, None, None)
+}
 
 #[test]
-#[ignore = "FileDownloader::get_file_name is pub(crate); not reachable from the integration test crate"]
+#[ignore]
 fn test_get_file_name() {
-    todo!()
+    let package = get_package("dummy/pkg", "1.0.0");
+    package.set_dist_url(Some("http://example.com/script.js".to_string()));
+
+    let downloader = get_archive_downloader(Some("/vendor"));
+
+    let first = downloader.__get_file_name(package.clone(), "/path");
+    let re = regex::Regex::new(r"/vendor/composer/tmp-[a-z0-9]+\.js").unwrap();
+    assert!(re.is_match(&first));
+    assert_eq!(first, downloader.__get_file_name(package, "/path"));
 }
 
 #[test]
-#[ignore = "FileDownloader::process_url is pub(crate); not reachable from the integration test crate"]
+#[ignore]
 fn test_process_url() {
-    todo!()
+    let downloader = get_archive_downloader(None);
+
+    let expected = "https://github.com/composer/composer/zipball/master";
+    let package = get_package("dummy/pkg", "1.0.0");
+    let url = downloader.__process_url(package, expected).unwrap();
+
+    assert_eq!(expected, url);
 }
 
 #[test]
-#[ignore = "FileDownloader::process_url is pub(crate); not reachable from the integration test crate"]
+#[ignore]
 fn test_process_url2() {
-    todo!()
+    let downloader = get_archive_downloader(None);
+
+    let expected = "https://github.com/composer/composer/archive/master.tar.gz";
+    let package = get_package("dummy/pkg", "1.0.0");
+    let url = downloader.__process_url(package, expected).unwrap();
+
+    assert_eq!(expected, url);
 }
 
 #[test]
-#[ignore = "FileDownloader::process_url is pub(crate); not reachable from the integration test crate"]
+#[ignore]
 fn test_process_url3() {
-    todo!()
+    let downloader = get_archive_downloader(None);
+
+    let expected = "https://api.github.com/repos/composer/composer/zipball/master";
+    let package = get_package("dummy/pkg", "1.0.0");
+    let url = downloader.__process_url(package, expected).unwrap();
+
+    assert_eq!(expected, url);
+}
+
+/// ref: ArchiveDownloaderTest::provideUrls
+fn provide_urls() -> Vec<&'static str> {
+    vec![
+        "https://api.github.com/repos/composer/composer/zipball/master",
+        "https://api.github.com/repos/composer/composer/tarball/master",
+        "https://github.com/composer/composer/zipball/master",
+        "https://www.github.com/composer/composer/tarball/master",
+        "https://github.com/composer/composer/archive/master.zip",
+        "https://github.com/composer/composer/archive/master.tar.gz",
+    ]
 }
 
 #[test]
-#[ignore = "FileDownloader::process_url is pub(crate); not reachable from the integration test crate"]
+#[ignore]
 fn test_process_url_rewrite_dist() {
-    todo!()
+    let downloader = get_archive_downloader(None);
+
+    for url in provide_urls() {
+        let r#type = if url.contains("tar") { "tar" } else { "zip" };
+        let expected = format!(
+            "https://api.github.com/repos/composer/composer/{}ball/ref",
+            r#type
+        );
+
+        let package = get_package("dummy/pkg", "1.0.0");
+        package.set_dist_reference(Some("ref".to_string()));
+        let url = downloader.__process_url(package, url).unwrap();
+
+        assert_eq!(expected, url);
+    }
+}
+
+/// ref: ArchiveDownloaderTest::provideBitbucketUrls
+fn provide_bitbucket_urls() -> Vec<(&'static str, &'static str)> {
+    vec![
+        (
+            "https://bitbucket.org/davereid/drush-virtualhost/get/77ca490c26ac818e024d1138aa8bd3677d1ef21f",
+            "zip",
+        ),
+        (
+            "https://bitbucket.org/davereid/drush-virtualhost/get/master",
+            "tar.gz",
+        ),
+        (
+            "https://bitbucket.org/davereid/drush-virtualhost/get/v1.0",
+            "tar.bz2",
+        ),
+    ]
 }
 
 #[test]
-#[ignore = "FileDownloader::process_url is pub(crate); not reachable from the integration test crate"]
+#[ignore]
 fn test_process_url_rewrite_bitbucket_dist() {
-    todo!()
+    let downloader = get_archive_downloader(None);
+
+    for (url, extension) in provide_bitbucket_urls() {
+        let url = format!("{}.{}", url, extension);
+        let expected = format!(
+            "https://bitbucket.org/davereid/drush-virtualhost/get/ref.{}",
+            extension
+        );
+
+        let package = get_package("dummy/pkg", "1.0.0");
+        package.set_dist_reference(Some("ref".to_string()));
+        let url = downloader.__process_url(package, &url).unwrap();
+
+        assert_eq!(expected, url);
+    }
 }
diff --git a/crates/shirabe/tests/io/buffer_io_test.rs b/crates/shirabe/tests/io/buffer_io_test.rs
index 62abe0a..7205808 100644
--- a/crates/shirabe/tests/io/buffer_io_test.rs
+++ b/crates/shirabe/tests/io/buffer_io_test.rs
@@ -6,7 +6,7 @@ use shirabe_external_packages::symfony::console::output::output_interface::VERBO
 use shirabe_php_shim::PhpMixed;
 
 #[test]
-#[ignore = "BufferIO::set_user_inputs is todo!() (needs StreamableInputInterface downcast wiring)"]
+#[ignore]
 fn test_set_user_inputs() {
     let mut buffer_io = BufferIO::new(String::new(), VERBOSITY_NORMAL, None).unwrap();
 
diff --git a/crates/shirabe/tests/json/json_file_test.rs b/crates/shirabe/tests/json/json_file_test.rs
index e8d87a3..032d0fd 100644
--- a/crates/shirabe/tests/json/json_file_test.rs
+++ b/crates/shirabe/tests/json/json_file_test.rs
@@ -54,70 +54,70 @@ fn create_temp_file() -> String {
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_extra_comma() {
     let json = "{\n        \"foo\": \"bar\",\n}";
     expect_parse_exception("Parse error on line 2", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_extra_comma_in_array() {
     let json = "{\n        \"foo\": [\n            \"bar\",\n        ]\n}";
     expect_parse_exception("Parse error on line 3", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_unescaped_backslash() {
     let json = "{\n        \"fo\\o\": \"bar\"\n}";
     expect_parse_exception("Parse error on line 1", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_skips_escaped_backslash() {
     let json = "{\n        \"fo\\\\o\": \"bar\"\n        \"a\": \"b\"\n}";
     expect_parse_exception("Parse error on line 2", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_single_quotes() {
     let json = "{\n        'foo': \"bar\"\n}";
     expect_parse_exception("Parse error on line 1", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_missing_quotes() {
     let json = "{\n        foo: \"bar\"\n}";
     expect_parse_exception("Parse error on line 1", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_array_as_hash() {
     let json = "{\n        \"foo\": [\"bar\": \"baz\"]\n}";
     expect_parse_exception("Parse error on line 2", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_missing_comma() {
     let json = "{\n        \"foo\": \"bar\"\n        \"bar\": \"foo\"\n}";
     expect_parse_exception("Parse error on line 2", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_missing_comma_multiline() {
     let json = "{\n        \"foo\": \"barbar\"\n\n        \"bar\": \"foo\"\n}";
     expect_parse_exception("Parse error on line 2", json);
 }
 
 #[test]
-#[ignore = "JsonFile::parse_json error path reaches JsonParser::new()/lint() (todo!()); the JSON linter is not yet ported"]
+#[ignore]
 fn test_parse_error_detect_missing_colon() {
     let json = "{\n        \"foo\": \"bar\",\n        \"bar\" \"foo\"\n}";
     expect_parse_exception("Parse error on line 3", json);
diff --git a/crates/shirabe/tests/package/archiver/git_exclude_filter_test.rs b/crates/shirabe/tests/package/archiver/git_exclude_filter_test.rs
index 431cb4f..80f9f31 100644
--- a/crates/shirabe/tests/package/archiver/git_exclude_filter_test.rs
+++ b/crates/shirabe/tests/package/archiver/git_exclude_filter_test.rs
@@ -3,7 +3,7 @@
 use shirabe::package::archiver::git_exclude_filter::GitExcludeFilter;
 
 #[test]
-#[ignore = "Preg::split panics on the `\\s+` pattern in the regex-crate-based shim"]
+#[ignore]
 fn test_pattern_escape() {
     for (ignore, expected) in provide_patterns() {
         let filter = GitExcludeFilter::new("/".to_string());
diff --git a/crates/shirabe/tests/package/root_alias_package_test.rs b/crates/shirabe/tests/package/root_alias_package_test.rs
index f168e13..c275da3 100644
--- a/crates/shirabe/tests/package/root_alias_package_test.rs
+++ b/crates/shirabe/tests/package/root_alias_package_test.rs
@@ -37,7 +37,7 @@ fn test_update_requires() {
 }
 
 #[test]
-#[ignore = "RootAliasPackage::set_dev_requires only updates alias_of, not the alias's own copy, so get_dev_requires stays empty"]
+#[ignore]
 fn test_update_dev_requires() {
     let alias = alias();
     assert!(alias.get_dev_requires().is_empty());
@@ -46,7 +46,7 @@ fn test_update_dev_requires() {
 }
 
 #[test]
-#[ignore = "RootAliasPackage::set_conflicts only updates alias_of, not the alias's own copy, so get_conflicts stays empty"]
+#[ignore]
 fn test_update_conflicts() {
     let alias = alias();
     assert!(alias.get_conflicts().is_empty());
@@ -55,7 +55,7 @@ fn test_update_conflicts() {
 }
 
 #[test]
-#[ignore = "RootAliasPackage::set_provides only updates alias_of, not the alias's own copy, so get_provides stays empty"]
+#[ignore]
 fn test_update_provides() {
     let alias = alias();
     assert!(alias.get_provides().is_empty());
@@ -64,7 +64,7 @@ fn test_update_provides() {
 }
 
 #[test]
-#[ignore = "RootAliasPackage::set_replaces only updates alias_of, not the alias's own copy, so get_replaces stays empty"]
+#[ignore]
 fn test_update_replaces() {
     let alias = alias();
     assert!(alias.get_replaces().is_empty());
diff --git a/crates/shirabe/tests/package/version/version_bumper_test.rs b/crates/shirabe/tests/package/version/version_bumper_test.rs
index 08217f7..2c376fa 100644
--- a/crates/shirabe/tests/package/version/version_bumper_test.rs
+++ b/crates/shirabe/tests/package/version/version_bumper_test.rs
@@ -8,7 +8,7 @@ use shirabe_php_shim::PhpMixed;
 use shirabe_semver::version_parser::VersionParser;
 
 #[test]
-#[ignore = "VersionBumper::bump_requirement uses a look-around regex the regex crate cannot compile"]
+#[ignore]
 fn test_bump_requirement() {
     for (requirement, pretty_version, expected_requirement, branch_alias) in
         provide_bump_requirement_tests()
diff --git a/crates/shirabe/tests/package/version/version_parser_test.rs b/crates/shirabe/tests/package/version/version_parser_test.rs
index c403580..2e93d03 100644
--- a/crates/shirabe/tests/package/version/version_parser_test.rs
+++ b/crates/shirabe/tests/package/version/version_parser_test.rs
@@ -15,7 +15,7 @@ fn entry(fields: &[(&str, &str)]) -> IndexMap<String, String> {
 }
 
 #[test]
-#[ignore = "parseNameVersionPairs uses a lookbehind/lookahead pattern the regex crate cannot compile"]
+#[ignore]
 fn test_parse_name_version_pairs() {
     for (input, result) in provide_parse_name_version_pairs_data() {
         let version_parser = VersionParser::new();
diff --git a/crates/shirabe/tests/platform/version_test.rs b/crates/shirabe/tests/platform/version_test.rs
index c2511d5..3fe0259 100644
--- a/crates/shirabe/tests/platform/version_test.rs
+++ b/crates/shirabe/tests/platform/version_test.rs
@@ -57,7 +57,7 @@ fn provide_openssl_versions() -> Vec<(&'static str, &'static str, bool, Option<&
 }
 
 #[test]
-#[ignore = "compile_php_pattern in the php-shim cannot yet parse Version's PCRE patterns"]
+#[ignore]
 fn test_parse_openssl_versions() {
     for (input, parsed_version, fips_expected, normalized_version) in provide_openssl_versions() {
         let mut is_fips = false;
@@ -76,7 +76,7 @@ fn test_parse_openssl_versions() {
 }
 
 #[test]
-#[ignore = "compile_php_pattern in the php-shim cannot yet parse Version's PCRE patterns"]
+#[ignore]
 fn test_parse_libjpeg_version() {
     let cases = [
         ("9", "9.0"),
@@ -95,7 +95,7 @@ fn test_parse_libjpeg_version() {
 }
 
 #[test]
-#[ignore = "compile_php_pattern in the php-shim cannot yet parse Version's PCRE patterns"]
+#[ignore]
 fn test_parse_zoneinfo_version() {
     let cases = [
         ("2019c", "2019.3"),
diff --git a/crates/shirabe/tests/repository/array_repository_test.rs b/crates/shirabe/tests/repository/array_repository_test.rs
index ee6dfb9..60bea16 100644
--- a/crates/shirabe/tests/repository/array_repository_test.rs
+++ b/crates/shirabe/tests/repository/array_repository_test.rs
@@ -100,7 +100,7 @@ fn test_find_packages() {
 }
 
 #[test]
-#[ignore = "AliasPackage::get_unique_name returns the aliased package's name, so has_package misses the alias version"]
+#[ignore]
 fn test_automatically_add_aliased_package_but_not_remove() {
     let mut repo = ArrayRepository::new(vec![]).unwrap();
 
diff --git a/crates/shirabe/tests/repository/artifact_repository_test.rs b/crates/shirabe/tests/repository/artifact_repository_test.rs
index 14475da..765bdac 100644
--- a/crates/shirabe/tests/repository/artifact_repository_test.rs
+++ b/crates/shirabe/tests/repository/artifact_repository_test.rs
@@ -1,9 +1,12 @@
 //! ref: composer/tests/Composer/Test/Repository/ArtifactRepositoryTest.php
 
-// ArtifactRepository::getPackages scans the fixture directory and opens each archive via
-// ZipArchive / PharData, both of which are todo!() in the php-shim.
+use std::cell::RefCell;
+use std::rc::Rc;
 
-use shirabe_php_shim::extension_loaded;
+use indexmap::IndexMap;
+use shirabe::io::{IOInterface, NullIO};
+use shirabe::repository::ArtifactRepository;
+use shirabe_php_shim::{PhpMixed, extension_loaded};
 
 fn set_up() {
     if !extension_loaded("zip") {
@@ -12,23 +15,104 @@ fn set_up() {
     }
 }
 
+fn artifacts_dir() -> String {
+    format!(
+        "{}/../../composer/tests/Composer/Test/Repository/Fixtures/artifacts",
+        env!("CARGO_MANIFEST_DIR")
+    )
+}
+
+fn create_repo(url: &str) -> ArtifactRepository {
+    let mut coordinates: IndexMap<String, PhpMixed> = IndexMap::new();
+    coordinates.insert("type".to_string(), PhpMixed::String("artifact".to_string()));
+    coordinates.insert("url".to_string(), PhpMixed::String(url.to_string()));
+
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    ArtifactRepository::new(coordinates, io).unwrap()
+}
+
 #[test]
-#[ignore = "ArtifactRepository exposes no public get_packages(); it does not impl RepositoryInterface and initialize/scan_directory are private"]
+#[ignore]
 fn test_extracts_configs_from_zip_archives() {
     set_up();
-    todo!()
+
+    let mut expected_packages = vec![
+        "vendor0/package0-0.0.1".to_string(),
+        "composer/composer-1.0.0-alpha6".to_string(),
+        "vendor1/package2-4.3.2".to_string(),
+        "vendor3/package1-5.4.3".to_string(),
+        "test/jsonInRoot-1.0.0".to_string(),
+        "test/jsonInRootTarFile-1.0.0".to_string(),
+        "test/jsonInFirstLevel-1.0.0".to_string(),
+        // The files not-an-artifact.zip and jsonSecondLevel are not valid
+        // artifacts and do not get detected.
+    ];
+
+    let mut repo = create_repo(&artifacts_dir());
+
+    let mut found_packages: Vec<String> = repo
+        .__get_packages()
+        .unwrap()
+        .iter()
+        .map(|package| {
+            format!(
+                "{}-{}",
+                package.get_pretty_name(),
+                package.get_pretty_version()
+            )
+        })
+        .collect();
+
+    expected_packages.sort();
+    found_packages.sort();
+
+    assert_eq!(expected_packages, found_packages);
+
+    let tar_package: Vec<_> = repo
+        .__get_packages()
+        .unwrap()
+        .into_iter()
+        .filter(|package| package.get_pretty_name() == "test/jsonInRootTarFile")
+        .collect();
+    assert_eq!(1, tar_package.len());
+    let tar_package = tar_package.into_iter().next_back().unwrap();
+    assert_eq!(Some("tar".to_string()), tar_package.get_dist_type());
 }
 
 #[test]
-#[ignore = "ArtifactRepository exposes no public get_packages(); it does not impl RepositoryInterface and initialize/scan_directory are private"]
+#[ignore]
 fn test_absolute_repo_url_creates_absolute_url_packages() {
     set_up();
-    todo!()
+
+    let absolute_path = artifacts_dir();
+    let mut repo = create_repo(&absolute_path);
+
+    for package in repo.__get_packages().unwrap() {
+        assert_eq!(
+            package
+                .get_dist_url()
+                .unwrap_or_default()
+                .find(&absolute_path.replace('\\', "/")),
+            Some(0)
+        );
+    }
 }
 
 #[test]
-#[ignore = "ArtifactRepository exposes no public get_packages(); it does not impl RepositoryInterface and initialize/scan_directory are private"]
+#[ignore]
 fn test_relative_repo_url_creates_relative_url_packages() {
     set_up();
-    todo!()
+
+    let relative_path = "tests/Composer/Test/Repository/Fixtures/artifacts";
+    let mut repo = create_repo(relative_path);
+
+    for package in repo.__get_packages().unwrap() {
+        assert_eq!(
+            package
+                .get_dist_url()
+                .unwrap_or_default()
+                .find(relative_path),
+            Some(0)
+        );
+    }
 }
diff --git a/crates/shirabe/tests/repository/composite_repository_test.rs b/crates/shirabe/tests/repository/composite_repository_test.rs
index e21ac65..f01a3fd 100644
--- a/crates/shirabe/tests/repository/composite_repository_test.rs
+++ b/crates/shirabe/tests/repository/composite_repository_test.rs
@@ -27,7 +27,7 @@ fn test_has_package() {
 }
 
 #[test]
-#[ignore = "constraint parsing uses a look-around regex the regex crate does not support"]
+#[ignore]
 fn test_find_package() {
     let mut repo = CompositeRepository::new(vec![
         array_repo(vec![get_package("foo", "1")]),
diff --git a/crates/shirabe/tests/repository/installed_repository_test.rs b/crates/shirabe/tests/repository/installed_repository_test.rs
index b2c88a6..6720260 100644
--- a/crates/shirabe/tests/repository/installed_repository_test.rs
+++ b/crates/shirabe/tests/repository/installed_repository_test.rs
@@ -34,7 +34,7 @@ fn provided_link() -> PhpMixed {
 }
 
 #[test]
-#[ignore = "InstalledRepository::add_repository asserts on a fixed set of repo types that omits InstalledRepositoryInterface, so adding an InstalledArrayRepository panics"]
+#[ignore]
 fn test_find_packages_with_replacers_and_providers() {
     let foo = loaded("foo", "1", vec![("replace", provided_link())]);
     let foo2 = get_package("foo", "2");
diff --git a/crates/shirabe/tests/repository/path_repository_test.rs b/crates/shirabe/tests/repository/path_repository_test.rs
index c2cf892..cea6a85 100644
--- a/crates/shirabe/tests/repository/path_repository_test.rs
+++ b/crates/shirabe/tests/repository/path_repository_test.rs
@@ -1,54 +1,253 @@
 //! ref: composer/tests/Composer/Test/Repository/PathRepositoryTest.php
 
-// PathRepository does not implement RepositoryInterface and exposes no public
-// getPackages/count/hasPackage; the delegation to its inner ArrayRepository is not yet
-// ported, so there is no way to drive these tests. The unversioned cases additionally
-// require the VersionGuesser (git).
+use std::cell::RefCell;
+use std::rc::Rc;
 
-#[ignore = "PathRepository exposes no public RepositoryInterface::get_packages/count/has_package; the inner ArrayRepository delegation is not ported"]
+use indexmap::IndexMap;
+use shirabe::config::Config;
+use shirabe::io::{IOInterface, NullIO};
+use shirabe::repository::PathRepository;
+use shirabe::util::{Platform, ProcessExecutor};
+use shirabe_php_shim::{
+    DIRECTORY_SEPARATOR, PhpMixed, file_get_contents, hash, realpath, serialize,
+};
+
+use crate::test_case::get_package;
+
+fn fixtures_dir() -> String {
+    format!(
+        "{}/../../composer/tests/Composer/Test/Repository/Fixtures",
+        env!("CARGO_MANIFEST_DIR")
+    )
+}
+
+/// ref: PathRepositoryTest::createPathRepo
+fn create_path_repo(options: IndexMap<String, PhpMixed>) -> PathRepository {
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+
+    let config = Rc::new(RefCell::new(Config::new(true, None)));
+    let proc = Rc::new(RefCell::new(ProcessExecutor::new(None)));
+
+    PathRepository::new(options, io, config, None, None, Some(proc)).unwrap()
+}
+
+fn coordinates(pairs: Vec<(&str, PhpMixed)>) -> IndexMap<String, PhpMixed> {
+    let mut map: IndexMap<String, PhpMixed> = IndexMap::new();
+    for (key, value) in pairs {
+        map.insert(key.to_string(), value);
+    }
+    map
+}
+
+#[ignore]
 #[test]
 fn test_load_package_from_file_system_with_incorrect_path() {
-    todo!()
+    let repository_url =
+        [fixtures_dir(), "path".to_string(), "missing".to_string()].join(DIRECTORY_SEPARATOR);
+    let mut repository =
+        create_path_repo(coordinates(vec![("url", PhpMixed::String(repository_url))]));
+    assert!(repository.__get_packages().is_err());
 }
 
-#[ignore = "PathRepository exposes no public RepositoryInterface::get_packages/count/has_package; the inner ArrayRepository delegation is not ported"]
+#[ignore]
 #[test]
 fn test_load_package_from_file_system_with_version() {
-    todo!()
+    let repository_url = [
+        fixtures_dir(),
+        "path".to_string(),
+        "with-version".to_string(),
+    ]
+    .join(DIRECTORY_SEPARATOR);
+    let mut repository =
+        create_path_repo(coordinates(vec![("url", PhpMixed::String(repository_url))]));
+    repository.__get_packages().unwrap();
+
+    assert_eq!(1, repository.__count().unwrap());
+    assert!(
+        repository
+            .__has_package(get_package("test/path-versioned", "0.0.2"))
+            .unwrap()
+    );
 }
 
-#[ignore = "PathRepository exposes no public RepositoryInterface::get_packages/count/has_package; the inner ArrayRepository delegation is not ported"]
+#[ignore]
 #[test]
 fn test_load_package_from_file_system_without_version() {
-    todo!()
+    let repository_url = [
+        fixtures_dir(),
+        "path".to_string(),
+        "without-version".to_string(),
+    ]
+    .join(DIRECTORY_SEPARATOR);
+    let mut repository =
+        create_path_repo(coordinates(vec![("url", PhpMixed::String(repository_url))]));
+    let packages = repository.__get_packages().unwrap();
+
+    assert!(repository.__count().unwrap() >= 1);
+
+    let package = &packages[0];
+    assert_eq!("test/path-unversioned", package.get_name());
+
+    let package_version = package.get_version();
+    assert!(!package_version.is_empty());
 }
 
-#[ignore = "PathRepository exposes no public RepositoryInterface::get_packages/count/has_package; the inner ArrayRepository delegation is not ported"]
+#[ignore]
 #[test]
 fn test_load_package_from_file_system_with_wildcard() {
-    todo!()
+    let repository_url =
+        [fixtures_dir(), "path".to_string(), "*".to_string()].join(DIRECTORY_SEPARATOR);
+    let mut repository =
+        create_path_repo(coordinates(vec![("url", PhpMixed::String(repository_url))]));
+    let packages = repository.__get_packages().unwrap();
+    let mut names: Vec<String> = Vec::new();
+
+    assert!(repository.__count().unwrap() >= 2);
+
+    let package = &packages[0];
+    names.push(package.get_name());
+
+    let package = &packages[1];
+    names.push(package.get_name());
+
+    names.sort();
+    assert_eq!(
+        vec![
+            "test/path-unversioned".to_string(),
+            "test/path-versioned".to_string()
+        ],
+        names
+    );
 }
 
-#[ignore = "PathRepository exposes no public RepositoryInterface::get_packages/count/has_package; the inner ArrayRepository delegation is not ported"]
+#[ignore]
 #[test]
 fn test_load_package_with_explicit_versions() {
-    todo!()
+    let mut versions: IndexMap<String, PhpMixed> = IndexMap::new();
+    versions.insert(
+        "test/path-unversioned".to_string(),
+        PhpMixed::String("4.3.2.1".to_string()),
+    );
+    versions.insert(
+        "test/path-versioned".to_string(),
+        PhpMixed::String("3.2.1.0".to_string()),
+    );
+    let options = coordinates(vec![("versions", PhpMixed::Array(versions))]);
+
+    let repository_url =
+        [fixtures_dir(), "path".to_string(), "*".to_string()].join(DIRECTORY_SEPARATOR);
+    let mut repository = create_path_repo(coordinates(vec![
+        ("url", PhpMixed::String(repository_url)),
+        ("options", PhpMixed::Array(options)),
+    ]));
+    let packages = repository.__get_packages().unwrap();
+
+    let mut versions: IndexMap<String, String> = IndexMap::new();
+
+    assert_eq!(2, repository.__count().unwrap());
+
+    let package = &packages[0];
+    versions.insert(package.get_name(), package.get_version());
+
+    let package = &packages[1];
+    versions.insert(package.get_name(), package.get_version());
+
+    versions.sort_keys();
+    let expected: IndexMap<String, String> = [
+        ("test/path-unversioned".to_string(), "4.3.2.1".to_string()),
+        ("test/path-versioned".to_string(), "3.2.1.0".to_string()),
+    ]
+    .into_iter()
+    .collect();
+    assert_eq!(expected, versions);
 }
 
-#[ignore = "PathRepository exposes no public RepositoryInterface::get_packages/count/has_package; the inner ArrayRepository delegation is not ported"]
+/// Verify relative repository URLs remain relative, see #4439
+#[ignore]
 #[test]
 fn test_url_remains_relative() {
-    todo!()
+    // realpath() does not fully expand the paths
+    // PHP Bug https://bugs.php.net/bug.php?id=72642
+    let repository_url = [
+        realpath(&realpath(&fixtures_dir().replace("/Fixtures", "")).unwrap_or_default())
+            .unwrap_or_default(),
+        "Fixtures".to_string(),
+        "path".to_string(),
+        "with-version".to_string(),
+    ]
+    .join(DIRECTORY_SEPARATOR);
+    // getcwd() not necessarily match __DIR__
+    // PHP Bug https://bugs.php.net/bug.php?id=73797
+    let cwd = realpath(&realpath(&Platform::get_cwd(false).unwrap()).unwrap_or_default())
+        .unwrap_or_default();
+    let relative_url = repository_url[cwd.len().min(repository_url.len())..]
+        .trim_start_matches(DIRECTORY_SEPARATOR)
+        .to_string();
+
+    let mut repository = create_path_repo(coordinates(vec![(
+        "url",
+        PhpMixed::String(relative_url.clone()),
+    )]));
+    let packages = repository.__get_packages().unwrap();
+
+    assert_eq!(1, repository.__count().unwrap());
+
+    let package = &packages[0];
+    assert_eq!("test/path-versioned", package.get_name());
+
+    // Convert platform specific separators back to generic URL slashes
+    let relative_url = relative_url.replace(DIRECTORY_SEPARATOR, "/");
+    assert_eq!(Some(relative_url), package.get_dist_url());
 }
 
-#[ignore = "PathRepository exposes no public RepositoryInterface::get_packages/count/has_package; the inner ArrayRepository delegation is not ported"]
+#[ignore]
 #[test]
 fn test_reference_none() {
-    todo!()
+    let options = coordinates(vec![("reference", PhpMixed::String("none".to_string()))]);
+    let repository_url =
+        [fixtures_dir(), "path".to_string(), "*".to_string()].join(DIRECTORY_SEPARATOR);
+    let mut repository = create_path_repo(coordinates(vec![
+        ("url", PhpMixed::String(repository_url)),
+        ("options", PhpMixed::Array(options)),
+    ]));
+    let packages = repository.__get_packages().unwrap();
+
+    assert!(repository.__count().unwrap() >= 2);
+
+    for package in &packages {
+        assert_eq!(package.get_dist_reference(), None);
+    }
 }
 
-#[ignore = "PathRepository exposes no public RepositoryInterface::get_packages/count/has_package; the inner ArrayRepository delegation is not ported"]
+#[ignore]
 #[test]
 fn test_reference_config() {
-    todo!()
+    let options = coordinates(vec![
+        ("reference", PhpMixed::String("config".to_string())),
+        ("relative", PhpMixed::Bool(true)),
+    ]);
+    let repository_url =
+        [fixtures_dir(), "path".to_string(), "*".to_string()].join(DIRECTORY_SEPARATOR);
+    let mut repository = create_path_repo(coordinates(vec![
+        ("url", PhpMixed::String(repository_url)),
+        ("options", PhpMixed::Array(options.clone())),
+    ]));
+    let packages = repository.__get_packages().unwrap();
+
+    assert!(repository.__count().unwrap() >= 2);
+
+    for package in &packages {
+        let dist_url = package.get_dist_url().unwrap_or_default();
+        assert_eq!(
+            package.get_dist_reference(),
+            Some(hash(
+                "sha1",
+                &format!(
+                    "{}{}",
+                    file_get_contents(format!("{}/composer.json", dist_url)).unwrap_or_default(),
+                    serialize(&PhpMixed::Array(options.clone()))
+                )
+            ))
+        );
+    }
 }
diff --git a/crates/shirabe/tests/repository/repository_factory_test.rs b/crates/shirabe/tests/repository/repository_factory_test.rs
index a0eb81f..c018c45 100644
--- a/crates/shirabe/tests/repository/repository_factory_test.rs
+++ b/crates/shirabe/tests/repository/repository_factory_test.rs
@@ -1,13 +1,57 @@
 //! ref: composer/tests/Composer/Test/Repository/RepositoryFactoryTest.php
 
+use std::cell::RefCell;
+use std::rc::Rc;
+
 use indexmap::IndexMap;
+use shirabe::config::Config;
+use shirabe::io::IOInterface;
+use shirabe::io::null_io::NullIO;
 use shirabe::repository::RepositoryFactory;
+use shirabe::util::http_downloader::HttpDownloader;
 use shirabe_php_shim::PhpMixed;
 
 #[test]
-#[ignore = "PHP test uses ReflectionProperty to read the private RepositoryManager::repository_classes field; no public accessor for repository_classes keys exists in the Rust impl"]
+#[ignore]
 fn test_manager_with_all_repository_types() {
-    todo!()
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    let config = Rc::new(RefCell::new(Config::new(false, None)));
+    let http_downloader = Rc::new(RefCell::new(HttpDownloader::new(
+        io.clone(),
+        config.clone(),
+        IndexMap::new(),
+        true,
+    )));
+
+    let manager =
+        RepositoryFactory::manager(io, &config, Some(http_downloader), None, None).unwrap();
+
+    let repository_classes: Vec<&str> = manager
+        .__repository_classes()
+        .keys()
+        .map(|k| k.as_str())
+        .collect();
+
+    assert_eq!(
+        vec![
+            "composer",
+            "vcs",
+            "package",
+            "pear",
+            "git",
+            "bitbucket",
+            "git-bitbucket",
+            "github",
+            "gitlab",
+            "svn",
+            "fossil",
+            "perforce",
+            "hg",
+            "artifact",
+            "path",
+        ],
+        repository_classes
+    );
 }
 
 fn generate_repository_name_provider() -> Vec<(
@@ -53,7 +97,7 @@ fn generate_repository_name_provider() -> Vec<(
 }
 
 #[test]
-#[ignore = "generate_repository_name does not stringify an integer index (PhpMixed::as_string returns None for Int), so a numeric index with no url yields \"\" instead of e.g. \"0\""]
+#[ignore]
 fn test_generate_repository_name() {
     for (index, repo_pairs, existing_keys, expected) in generate_repository_name_provider() {
         let repo: IndexMap<String, PhpMixed> = repo_pairs
diff --git a/crates/shirabe/tests/repository/repository_utils_test.rs b/crates/shirabe/tests/repository/repository_utils_test.rs
index 3f55bfd..3ea1439 100644
--- a/crates/shirabe/tests/repository/repository_utils_test.rs
+++ b/crates/shirabe/tests/repository/repository_utils_test.rs
@@ -153,7 +153,7 @@ fn provide_filter_require_tests() -> Vec<FilterCase> {
 }
 
 #[test]
-#[ignore = "building packages with links via ArrayLoader parses constraints with a look-around regex the regex crate cannot compile"]
+#[ignore]
 fn test_filter_required_packages() {
     for case in provide_filter_require_tests() {
         let pkgs = build_packages();
diff --git a/crates/shirabe/tests/repository/vcs/forgejo_driver_test.rs b/crates/shirabe/tests/repository/vcs/forgejo_driver_test.rs
index 0836fc5..ea130ea 100644
--- a/crates/shirabe/tests/repository/vcs/forgejo_driver_test.rs
+++ b/crates/shirabe/tests/repository/vcs/forgejo_driver_test.rs
@@ -76,7 +76,7 @@ fn supports_provider() -> Vec<(bool, &'static str)> {
 }
 
 #[test]
-#[ignore = "ForgejoDriver::supports uses a regex with a character class the regex crate cannot compile (unclosed character class)"]
+#[ignore]
 fn test_supports() {
     for (expected, repo_url) in supports_provider() {
         let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
diff --git a/crates/shirabe/tests/repository/vcs/github_driver_test.rs b/crates/shirabe/tests/repository/vcs/github_driver_test.rs
index 5313c0b..f5958a4 100644
--- a/crates/shirabe/tests/repository/vcs/github_driver_test.rs
+++ b/crates/shirabe/tests/repository/vcs/github_driver_test.rs
@@ -64,7 +64,7 @@ fn supports_provider() -> Vec<(bool, &'static str)> {
 }
 
 #[test]
-#[ignore = "GitHubDriver::supports reaches non-strict in_array, which is todo!() in the php-shim"]
+#[ignore]
 fn test_supports() {
     let SetUp { home, config: _ } = set_up();
     let _tear_down = TearDown::new(home.path().to_path_buf());
diff --git a/crates/shirabe/tests/script/event_test.rs b/crates/shirabe/tests/script/event_test.rs
index b045bc4..e7e574b 100644
--- a/crates/shirabe/tests/script/event_test.rs
+++ b/crates/shirabe/tests/script/event_test.rs
@@ -7,6 +7,7 @@ use indexmap::IndexMap;
 use shirabe::composer::{ComposerHandle, PartialOrFullComposer};
 use shirabe::config::Config;
 use shirabe::event_dispatcher::Event as BaseEvent;
+use shirabe::event_dispatcher::EventInterface;
 use shirabe::io::IOInterface;
 use shirabe::io::null_io::NullIO;
 use shirabe::package::{RootPackageHandle, RootPackageInterfaceHandle};
@@ -28,7 +29,7 @@ fn create_composer_instance() -> ComposerHandle {
 }
 
 #[test]
-#[ignore = "Event::calculate_originating_event (called by set_originating_event) is todo!()"]
+#[ignore]
 fn test_event_sets_originating_event() {
     let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
     let composer = create_composer_instance();
@@ -51,7 +52,14 @@ fn test_event_sets_originating_event() {
 
     script_event.set_originating_event(originating_event);
 
-    assert!(script_event.get_originating_event().is_some());
+    // assertSame: the originating event passed in is returned unchanged.
+    assert_eq!(
+        script_event
+            .get_originating_event()
+            .map(EventInterface::get_name),
+        Some("originatingEvent"),
+        "getOriginatingEvent() SHOULD return test event"
+    );
 }
 
 // In PHP, the intermediate originating event is itself a Script\Event, and
diff --git a/crates/shirabe/tests/util/config_validator_test.rs b/crates/shirabe/tests/util/config_validator_test.rs
index da962e0..2e4aed0 100644
--- a/crates/shirabe/tests/util/config_validator_test.rs
+++ b/crates/shirabe/tests/util/config_validator_test.rs
@@ -29,7 +29,7 @@ fn validate(file: &str) -> Vec<String> {
 
 /// Test ConfigValidator warns on commit reference
 #[test]
-#[ignore = "ConfigValidator::validate reaches a todo!() in the php-shim"]
+#[ignore]
 fn test_config_validator_commit_ref_warning() {
     let warnings = validate(&fixture("composer_commit-ref.json"));
 
@@ -39,7 +39,7 @@ fn test_config_validator_commit_ref_warning() {
 }
 
 #[test]
-#[ignore = "ConfigValidator::validate reaches a todo!() in the php-shim"]
+#[ignore]
 fn test_config_validator_warns_on_script_description_for_nonexistent_script() {
     let warnings = validate(&fixture("composer_scripts-descriptions.json"));
 
@@ -52,7 +52,7 @@ fn test_config_validator_warns_on_script_description_for_nonexistent_script() {
 }
 
 #[test]
-#[ignore = "ConfigValidator::validate reaches a todo!() in the php-shim"]
+#[ignore]
 fn test_config_validator_warns_on_script_alias_for_nonexistent_script() {
     let warnings = validate(&fixture("composer_scripts-aliases.json"));
 
@@ -62,7 +62,7 @@ fn test_config_validator_warns_on_script_alias_for_nonexistent_script() {
 }
 
 #[test]
-#[ignore = "ConfigValidator::validate reaches a todo!() in the php-shim"]
+#[ignore]
 fn test_config_validator_warns_on_unnecessary_provide_replace() {
     let warnings = validate(&fixture("composer_provide-replace-requirements.json"));
 
diff --git a/crates/shirabe/tests/util/forgejo_url_test.rs b/crates/shirabe/tests/util/forgejo_url_test.rs
index e29c05e..5c33596 100644
--- a/crates/shirabe/tests/util/forgejo_url_test.rs
+++ b/crates/shirabe/tests/util/forgejo_url_test.rs
@@ -3,7 +3,7 @@
 use shirabe::util::forgejo_url::ForgejoUrl;
 
 #[test]
-#[ignore = "Preg::match panics: ForgejoUrl::URL_REGEX is an undelimited pattern"]
+#[ignore]
 fn test_create() {
     for repo_url in create_provider() {
         let forgejo_url = ForgejoUrl::try_from(Some(repo_url));
@@ -29,13 +29,13 @@ fn create_provider() -> Vec<&'static str> {
 }
 
 #[test]
-#[ignore = "Preg::match panics: ForgejoUrl::URL_REGEX is an undelimited pattern"]
+#[ignore]
 fn test_create_invalid() {
     assert!(ForgejoUrl::create("https://example.org").is_err());
 }
 
 #[test]
-#[ignore = "Preg::match panics: ForgejoUrl::URL_REGEX is an undelimited pattern"]
+#[ignore]
 fn test_generate_ssh_url() {
     let forgejo_url = ForgejoUrl::create("git@codeberg.org:acme/repo.git").unwrap();
 
diff --git a/crates/shirabe/tests/util/http/request_proxy_test.rs b/crates/shirabe/tests/util/http/request_proxy_test.rs
index 502ec31..3e96a7b 100644
--- a/crates/shirabe/tests/util/http/request_proxy_test.rs
+++ b/crates/shirabe/tests/util/http/request_proxy_test.rs
@@ -128,7 +128,7 @@ fn test_get_curl_options() {
 }
 
 #[test]
-#[ignore = "secure proxies require curl_version, which is a todo!() in the php-shim"]
+#[ignore]
 fn test_get_curl_options_with_ssl() {
     let mut cafile_opts: IndexMap<String, PhpMixed> = IndexMap::new();
     cafile_opts.insert(
diff --git a/crates/shirabe/tests/util/ini_helper_test.rs b/crates/shirabe/tests/util/ini_helper_test.rs
index 59dc967..f511d76 100644
--- a/crates/shirabe/tests/util/ini_helper_test.rs
+++ b/crates/shirabe/tests/util/ini_helper_test.rs
@@ -7,10 +7,11 @@ use shirabe_php_shim::{PATH_SEPARATOR, getenv, putenv};
 #[allow(dead_code)]
 fn set_up() -> TearDown {
     // Register our name with XdebugHandler.
-    // TODO: XdebugHandler is the external composer/xdebug-handler package and is not ported.
-    todo!();
+    // The PHP test constructs `new XdebugHandler('composer')` so that
+    // getAllIniFiles() reads the COMPOSER_ORIGINAL_INIS env var. The Rust
+    // XdebugHandler is a unit struct with no name-registration API, so this
+    // step is a no-op here.
     // Save current state
-    #[allow(unreachable_code)]
     let env_original = getenv("COMPOSER_ORIGINAL_INIS");
     TearDown { env_original }
 }
@@ -44,7 +45,7 @@ fn set_env(paths: &[&str]) {
 }
 
 #[test]
-#[ignore = "IniHelper::get_all reaches XdebugHandler::get_all_ini_files, which is todo!()"]
+#[ignore]
 fn test_with_no_ini() {
     let paths = [""];
 
@@ -57,7 +58,7 @@ fn test_with_no_ini() {
 }
 
 #[test]
-#[ignore = "IniHelper::get_all reaches XdebugHandler::get_all_ini_files, which is todo!()"]
+#[ignore]
 fn test_with_loaded_ini_only() {
     let paths = ["loaded.ini"];
 
@@ -66,7 +67,7 @@ fn test_with_loaded_ini_only() {
 }
 
 #[test]
-#[ignore = "IniHelper::get_all reaches XdebugHandler::get_all_ini_files, which is todo!()"]
+#[ignore]
 fn test_with_loaded_ini_and_additional() {
     let paths = ["loaded.ini", "one.ini", "two.ini"];
 
@@ -79,7 +80,7 @@ fn test_with_loaded_ini_and_additional() {
 }
 
 #[test]
-#[ignore = "IniHelper::get_all reaches XdebugHandler::get_all_ini_files, which is todo!()"]
+#[ignore]
 fn test_without_loaded_ini_and_additional() {
     let paths = ["", "one.ini", "two.ini"];
 
diff --git a/crates/shirabe/tests/util/no_proxy_pattern_test.rs b/crates/shirabe/tests/util/no_proxy_pattern_test.rs
index 7a423b9..51017ea 100644
--- a/crates/shirabe/tests/util/no_proxy_pattern_test.rs
+++ b/crates/shirabe/tests/util/no_proxy_pattern_test.rs
@@ -42,7 +42,7 @@ fn test_host_name() {
 }
 
 #[test]
-#[ignore = "NoProxyPattern does not match IPv4-mapped IPv6 addresses against IPv4 rules (port logic gap)"]
+#[ignore]
 fn test_ip_address() {
     let noproxy = "192.168.1.1, 2001:db8::52:0:1";
 
@@ -55,7 +55,7 @@ fn test_ip_address() {
 }
 
 #[test]
-#[ignore = "NoProxyPattern does not match IPv4-mapped IPv6 addresses against IPv4/CIDR rules (port logic gap)"]
+#[ignore]
 fn test_ip_range() {
     let noproxy = "10.0.0.0/30, 2002:db8:a::45/121";
 
diff --git a/crates/shirabe/tests/util/package_sorter_test.rs b/crates/shirabe/tests/util/package_sorter_test.rs
index f84ff09..0a8d395 100644
--- a/crates/shirabe/tests/util/package_sorter_test.rs
+++ b/crates/shirabe/tests/util/package_sorter_test.rs
@@ -1,30 +1,30 @@
 //! ref: composer/tests/Composer/Test/Util/PackageSorterTest.php
 
 use indexmap::IndexMap;
-use shirabe::package::handle::PackageInterfaceHandle;
-use shirabe::package::loader::array_loader::ArrayLoader;
+use shirabe::package::Link;
+use shirabe::package::handle::{PackageHandle, PackageInterfaceHandle};
 use shirabe::util::package_sorter::PackageSorter;
-use shirabe_php_shim::PhpMixed;
+use shirabe_semver::constraint::MatchAllConstraint;
 
-/// PHP `createPackage` sets requires directly on a `Package`; the public handle API only allows
-/// link setters on root packages, so the equivalent here builds the package through ArrayLoader.
 fn create_package(name: &str, requires: &[&str]) -> PackageInterfaceHandle {
-    let mut config: IndexMap<String, PhpMixed> = IndexMap::new();
-    config.insert("name".to_string(), PhpMixed::String(name.to_string()));
-    config.insert("version".to_string(), PhpMixed::String("1.0.0".to_string()));
+    let package = PackageHandle::new(name.to_string(), "1.0.0.0".to_string(), "1.0.0".to_string());
 
-    if !requires.is_empty() {
-        let mut links: IndexMap<String, PhpMixed> = IndexMap::new();
-        for require_name in requires {
-            links.insert(require_name.to_string(), PhpMixed::String("*".to_string()));
-        }
-        config.insert("require".to_string(), PhpMixed::Array(links));
+    let mut links: IndexMap<String, Link> = IndexMap::new();
+    for require_name in requires {
+        links.insert(
+            require_name.to_string(),
+            Link::new(
+                package.get_name(),
+                require_name.to_string(),
+                MatchAllConstraint::new(None).into(),
+                None,
+                "*".to_string(),
+            ),
+        );
     }
+    package.__set_requires(links);
 
-    ArrayLoader::new(None, false)
-        .load_packages(vec![config])
-        .unwrap()
-        .remove(0)
+    package.into()
 }
 
 fn names(packages: &[PackageInterfaceHandle]) -> Vec<String> {
@@ -141,7 +141,7 @@ fn sorting_orders_dependencies_higher_than_package_cases() -> Vec<(
 }
 
 #[test]
-#[ignore = "constraint parsing reaches a look-around regex unsupported by the regex-crate shim (Preg)"]
+#[ignore]
 fn test_sorting_orders_dependencies_higher_than_package() {
     for (packages, expected_ordered_list, weights) in
         sorting_orders_dependencies_higher_than_package_cases()
diff --git a/crates/shirabe/tests/util/platform_test.rs b/crates/shirabe/tests/util/platform_test.rs
index 626e358..c5fe190 100644
--- a/crates/shirabe/tests/util/platform_test.rs
+++ b/crates/shirabe/tests/util/platform_test.rs
@@ -4,7 +4,7 @@ use shirabe::util::platform::Platform;
 use shirabe_php_shim::defined;
 
 #[test]
-#[ignore = "Platform::expand_path does not read the env var set via put_env in this runtime"]
+#[ignore]
 fn test_expand_path() {
     Platform::put_env("TESTENV", "/home/test");
     assert_eq!(
diff --git a/crates/shirabe/tests/util/silencer_test.rs b/crates/shirabe/tests/util/silencer_test.rs
index 88d33c6..1b65324 100644
--- a/crates/shirabe/tests/util/silencer_test.rs
+++ b/crates/shirabe/tests/util/silencer_test.rs
@@ -7,7 +7,7 @@ use shirabe_php_shim::{
 
 /// Test succeeds when no warnings are emitted externally, and original level is restored.
 #[test]
-#[ignore = "trigger_error is todo!() in the php-shim"]
+#[ignore]
 fn test_silencer() {
     let before = error_reporting(None);
 
diff --git a/crates/shirabe/tests/util/svn_test.rs b/crates/shirabe/tests/util/svn_test.rs
index 90a6b45..25e3f4e 100644
--- a/crates/shirabe/tests/util/svn_test.rs
+++ b/crates/shirabe/tests/util/svn_test.rs
@@ -1,31 +1,145 @@
 //! ref: composer/tests/Composer/Test/Util/SvnTest.php
 
-#[ignore = "Svn::get_credential_args is pub(crate) (crate-private); unreachable from an integration test"]
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use indexmap::IndexMap;
+use shirabe::config::Config;
+use shirabe::io::IOInterface;
+use shirabe::io::null_io::NullIO;
+use shirabe::util::svn::Svn;
+use shirabe_php_shim::PhpMixed;
+
+fn map(pairs: Vec<(&str, PhpMixed)>) -> IndexMap<String, PhpMixed> {
+    pairs.into_iter().map(|(k, v)| (k.to_string(), v)).collect()
+}
+
+/// Builds a `['config' => ['http-basic' => [host => ['username' => .., 'password' => ..]]]]`
+/// map for `Config::merge`.
+fn http_basic_config(host: &str, username: &str, password: &str) -> IndexMap<String, PhpMixed> {
+    let creds = map(vec![
+        ("username", PhpMixed::String(username.to_string())),
+        ("password", PhpMixed::String(password.to_string())),
+    ]);
+    let http_basic = map(vec![(host, PhpMixed::Array(creds))]);
+    let config = map(vec![("http-basic", PhpMixed::Array(http_basic))]);
+    map(vec![("config", PhpMixed::Array(config))])
+}
+
+/// ref: SvnTest::urlProvider
+fn url_provider() -> Vec<(&'static str, Vec<&'static str>)> {
+    vec![
+        (
+            "http://till:test@svn.example.org/",
+            vec!["--username", "till", "--password", "test"],
+        ),
+        ("http://svn.apache.org/", vec![]),
+        (
+            "svn://johndoe@example.org",
+            vec!["--username", "johndoe", "--password", ""],
+        ),
+    ]
+}
+
 #[test]
+#[ignore]
 fn test_credentials() {
-    todo!()
+    for (url, expect) in url_provider() {
+        let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+        let config = Rc::new(RefCell::new(Config::new(true, None)));
+        let mut svn = Svn::new(url.to_string(), io, config, None);
+
+        let expect: Vec<String> = expect.iter().map(|s| s.to_string()).collect();
+        assert_eq!(expect, svn.__get_credential_args());
+    }
 }
 
-#[ignore = "Svn::get_command is pub(crate) (crate-private); unreachable from an integration test"]
 #[test]
+#[ignore]
 fn test_interactive_string() {
-    todo!()
+    let url = "http://svn.example.org";
+
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    let config = Rc::new(RefCell::new(Config::new(true, None)));
+    let mut svn = Svn::new(url.to_string(), io, config, None);
+
+    assert_eq!(
+        vec![
+            "svn".to_string(),
+            "ls".to_string(),
+            "--non-interactive".to_string(),
+            "--".to_string(),
+            "http://svn.example.org".to_string(),
+        ],
+        svn.__get_command(vec!["svn".to_string(), "ls".to_string()], url, None)
+    );
 }
 
-#[ignore = "Svn::get_credential_args is pub(crate) (crate-private); unreachable from an integration test"]
 #[test]
+#[ignore]
 fn test_credentials_from_config() {
-    todo!()
+    let url = "http://svn.apache.org";
+
+    let mut config = Config::new(true, None);
+    config.merge(&http_basic_config("svn.apache.org", "foo", "bar"), "test");
+
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    let mut svn = Svn::new(url.to_string(), io, Rc::new(RefCell::new(config)), None);
+
+    assert_eq!(
+        vec![
+            "--username".to_string(),
+            "foo".to_string(),
+            "--password".to_string(),
+            "bar".to_string(),
+        ],
+        svn.__get_credential_args()
+    );
 }
 
-#[ignore = "Svn::get_credential_args is pub(crate) (crate-private); unreachable from an integration test"]
 #[test]
+#[ignore]
 fn test_credentials_from_config_with_cache_credentials_true() {
-    todo!()
+    let url = "http://svn.apache.org";
+
+    let mut config = Config::new(true, None);
+    config.merge(&http_basic_config("svn.apache.org", "foo", "bar"), "test");
+
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    let mut svn = Svn::new(url.to_string(), io, Rc::new(RefCell::new(config)), None);
+    svn.set_cache_credentials(true);
+
+    assert_eq!(
+        vec![
+            "--username".to_string(),
+            "foo".to_string(),
+            "--password".to_string(),
+            "bar".to_string(),
+        ],
+        svn.__get_credential_args()
+    );
 }
 
-#[ignore = "Svn::get_credential_args is pub(crate) (crate-private); unreachable from an integration test"]
 #[test]
+#[ignore]
 fn test_credentials_from_config_with_cache_credentials_false() {
-    todo!()
+    let url = "http://svn.apache.org";
+
+    let mut config = Config::new(true, None);
+    config.merge(&http_basic_config("svn.apache.org", "foo", "bar"), "test");
+
+    let io: Rc<RefCell<dyn IOInterface>> = Rc::new(RefCell::new(NullIO::new()));
+    let mut svn = Svn::new(url.to_string(), io, Rc::new(RefCell::new(config)), None);
+    svn.set_cache_credentials(false);
+
+    assert_eq!(
+        vec![
+            "--no-auth-cache".to_string(),
+            "--username".to_string(),
+            "foo".to_string(),
+            "--password".to_string(),
+            "bar".to_string(),
+        ],
+        svn.__get_credential_args()
+    );
 }
diff --git a/crates/shirabe/tests/util/tar_test.rs b/crates/shirabe/tests/util/tar_test.rs
index 6234108..48f1cbe 100644
--- a/crates/shirabe/tests/util/tar_test.rs
+++ b/crates/shirabe/tests/util/tar_test.rs
@@ -12,7 +12,7 @@ fn fixture(name: &str) -> String {
 }
 
 #[test]
-#[ignore = "PharData::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_nullif_the_tar_is_not_found() {
     let result = Tar::get_composer_json(&fixture("invalid.zip")).unwrap();
 
@@ -20,26 +20,26 @@ fn test_returns_nullif_the_tar_is_not_found() {
 }
 
 #[test]
-#[ignore = "PharData::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_null_if_the_tar_is_empty() {
     let result = Tar::get_composer_json(&fixture("empty.tar.gz")).unwrap();
     assert_eq!(None, result);
 }
 
 #[test]
-#[ignore = "PharData::new is todo!() in the php-shim"]
+#[ignore]
 fn test_throws_exception_if_the_tar_has_no_composer_json() {
     assert!(Tar::get_composer_json(&fixture("nojson.tar.gz")).is_err());
 }
 
 #[test]
-#[ignore = "PharData::new is todo!() in the php-shim"]
+#[ignore]
 fn test_throws_exception_if_the_composer_json_is_in_a_sub_subfolder() {
     assert!(Tar::get_composer_json(&fixture("subfolders.tar.gz")).is_err());
 }
 
 #[test]
-#[ignore = "PharData::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_composer_json_in_tar_root() {
     let result = Tar::get_composer_json(&fixture("root.tar.gz")).unwrap();
     assert_eq!(
@@ -49,7 +49,7 @@ fn test_returns_composer_json_in_tar_root() {
 }
 
 #[test]
-#[ignore = "PharData::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_composer_json_in_first_folder() {
     let result = Tar::get_composer_json(&fixture("folder.tar.gz")).unwrap();
     assert_eq!(
@@ -59,7 +59,7 @@ fn test_returns_composer_json_in_first_folder() {
 }
 
 #[test]
-#[ignore = "PharData::new is todo!() in the php-shim"]
+#[ignore]
 fn test_multiple_top_level_dirs_is_invalid() {
     assert!(Tar::get_composer_json(&fixture("multiple.tar.gz")).is_err());
 }
diff --git a/crates/shirabe/tests/util/url_test.rs b/crates/shirabe/tests/util/url_test.rs
index cbbfb64..4adb4f2 100644
--- a/crates/shirabe/tests/util/url_test.rs
+++ b/crates/shirabe/tests/util/url_test.rs
@@ -22,7 +22,7 @@ fn conf(entries: &[(&str, &[&str])]) -> IndexMap<String, PhpMixed> {
 }
 
 #[test]
-#[ignore = "update_dist_reference uses a regex pattern the regex crate cannot compile"]
+#[ignore]
 fn test_update_dist_reference() {
     for (url, expected_url, c, r#ref) in dist_refs_provider() {
         let mut config = Config::new(true, None);
@@ -143,7 +143,7 @@ fn dist_refs_provider() -> Vec<(
 }
 
 #[test]
-#[ignore = "Url::sanitize uses a regex pattern the regex crate cannot compile"]
+#[ignore]
 fn test_sanitize() {
     for (expected, url) in sanitize_provider() {
         assert_eq!(expected, Url::sanitize(url.to_string()));
diff --git a/crates/shirabe/tests/util/zip_test.rs b/crates/shirabe/tests/util/zip_test.rs
index b80dd17..4d883e0 100644
--- a/crates/shirabe/tests/util/zip_test.rs
+++ b/crates/shirabe/tests/util/zip_test.rs
@@ -18,7 +18,7 @@ fn test_throws_exception_if_zip_extension_is_not_loaded() {
 }
 
 #[test]
-#[ignore = "ZipArchive::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_nullif_the_zip_is_not_found() {
     let result = Zip::get_composer_json(&fixture("invalid.zip")).unwrap();
 
@@ -26,7 +26,7 @@ fn test_returns_nullif_the_zip_is_not_found() {
 }
 
 #[test]
-#[ignore = "ZipArchive::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_null_if_the_zip_is_empty() {
     let result = Zip::get_composer_json(&fixture("empty.zip")).unwrap();
 
@@ -34,19 +34,19 @@ fn test_returns_null_if_the_zip_is_empty() {
 }
 
 #[test]
-#[ignore = "ZipArchive::new is todo!() in the php-shim"]
+#[ignore]
 fn test_throws_exception_if_the_zip_has_no_composer_json() {
     assert!(Zip::get_composer_json(&fixture("nojson.zip")).is_err());
 }
 
 #[test]
-#[ignore = "ZipArchive::new is todo!() in the php-shim"]
+#[ignore]
 fn test_throws_exception_if_the_composer_json_is_in_a_sub_subfolder() {
     assert!(Zip::get_composer_json(&fixture("subfolders.zip")).is_err());
 }
 
 #[test]
-#[ignore = "ZipArchive::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_composer_json_in_zip_root() {
     let result = Zip::get_composer_json(&fixture("root.zip")).unwrap();
 
@@ -57,7 +57,7 @@ fn test_returns_composer_json_in_zip_root() {
 }
 
 #[test]
-#[ignore = "ZipArchive::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_composer_json_in_first_folder() {
     let result = Zip::get_composer_json(&fixture("folder.zip")).unwrap();
 
@@ -68,13 +68,13 @@ fn test_returns_composer_json_in_first_folder() {
 }
 
 #[test]
-#[ignore = "ZipArchive::new is todo!() in the php-shim"]
+#[ignore]
 fn test_multiple_top_level_dirs_is_invalid() {
     assert!(Zip::get_composer_json(&fixture("multiple.zip")).is_err());
 }
 
 #[test]
-#[ignore = "ZipArchive::new is todo!() in the php-shim"]
+#[ignore]
 fn test_returns_composer_json_from_first_subfolder() {
     let result = Zip::get_composer_json(&fixture("single-sub.zip")).unwrap();