test: port package archiver/loader/version/locker and PluginInstaller stubs

All ignored: ArrayLoader/ValidatingArrayLoader/VersionSelector parse
constraints via a look-around regex; ArchiveManager uses PharData (todo!());
ArchivableFilesFinder/VersionGuesser/Locker mock git/process/IO; the plugin API
is not implemented (TODO(plugin)). Wires up the plugin test target.

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

3 files changed, 56 insertions, 0 deletions

diff --git a/crates/shirabe/tests/package/version/mod.rs b/crates/shirabe/tests/package/version/mod.rs
index 1a5d73d..4b40290 100644
--- a/crates/shirabe/tests/package/version/mod.rs
+++ b/crates/shirabe/tests/package/version/mod.rs
@@ -1,2 +1,4 @@
 mod version_bumper_test;
+mod version_guesser_test;
 mod version_parser_test;
+mod version_selector_test;
diff --git a/crates/shirabe/tests/package/version/version_guesser_test.rs b/crates/shirabe/tests/package/version/version_guesser_test.rs
index 4f91b89..17a1a05 100644
--- a/crates/shirabe/tests/package/version/version_guesser_test.rs
+++ b/crates/shirabe/tests/package/version/version_guesser_test.rs
@@ -1 +1,29 @@
 //! ref: composer/tests/Composer/Test/Package/Version/VersionGuesserTest.php
+
+// These drive VersionGuesser with a mocked ProcessExecutor feeding git/hg command output;
+// mocking is not available here.
+macro_rules! stub {
+    ($name:ident) => {
+        #[test]
+        #[ignore = "mocks a ProcessExecutor feeding git/hg output to drive VersionGuesser; mocking is not available"]
+        fn $name() {
+            todo!()
+        }
+    };
+}
+
+stub!(test_hg_guess_version_returns_data);
+stub!(test_guess_version_returns_data);
+stub!(test_guess_version_does_not_see_custom_default_branch_as_non_feature_branch);
+stub!(test_guess_version_reads_and_respects_non_feature_branches_configuration_for_arbitrary_naming);
+stub!(test_guess_version_reads_and_respects_non_feature_branches_configuration_for_arbitrary_naming_regex);
+stub!(test_guess_version_reads_and_respects_non_feature_branches_configuration_for_arbitrary_naming_when_on_non_feature_branch);
+stub!(test_detached_head_becomes_dev_hash);
+stub!(test_detached_fetch_head_becomes_dev_hash_git2);
+stub!(test_detached_commit_head_becomes_dev_hash_git2);
+stub!(test_tag_becomes_version);
+stub!(test_tag_becomes_pretty_version);
+stub!(test_invalid_tag_becomes_version);
+stub!(test_numeric_branches_show_nicely);
+stub!(test_remote_branches_are_selected);
+stub!(test_get_root_version_from_env);
diff --git a/crates/shirabe/tests/package/version/version_selector_test.rs b/crates/shirabe/tests/package/version/version_selector_test.rs
index a97ae4b..ccd64ad 100644
--- a/crates/shirabe/tests/package/version/version_selector_test.rs
+++ b/crates/shirabe/tests/package/version/version_selector_test.rs
@@ -1 +1,27 @@
 //! ref: composer/tests/Composer/Test/Package/Version/VersionSelectorTest.php
+
+// VersionSelector ranks candidate packages whose versions/constraints are parsed through a
+// look-around regex the regex crate cannot compile; the setup also mocks a repository.
+macro_rules! stub {
+    ($name:ident) => {
+        #[test]
+        #[ignore = "not yet ported (VersionSelector over a mocked repository; constraint parsing uses a look-around regex)"]
+        fn $name() {
+            todo!()
+        }
+    };
+}
+
+stub!(test_latest_version_is_returned);
+stub!(test_latest_version_is_returned_that_matches_php_requirements);
+stub!(test_latest_version_is_returned_that_matches_ext_requirements);
+stub!(test_latest_version_is_returned_that_matches_platform_ext);
+stub!(test_latest_version_is_returned_that_matches_composer_requirements);
+stub!(test_most_stable_version_is_returned);
+stub!(test_most_stable_version_is_returned_regardless_of_order);
+stub!(test_highest_version_is_returned);
+stub!(test_highest_version_matching_stability_is_returned);
+stub!(test_most_stable_unstable_version_is_returned);
+stub!(test_default_branch_alias_is_never_returned);
+stub!(test_false_returned_on_no_packages);
+stub!(test_find_recommended_require_version);