test(package): port RootPackageLoaderTest as stubs

All ignored: load() parses require constraints via a look-around regex and the
cases mock RepositoryManager / ProcessExecutor / VersionGuesser. Wires up the
package/loader test submodule.

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

3 files changed, 36 insertions, 0 deletions

diff --git a/crates/shirabe/tests/package/loader/mod.rs b/crates/shirabe/tests/package/loader/mod.rs
new file mode 100644
index 0000000..7890044
--- /dev/null
+++ b/crates/shirabe/tests/package/loader/mod.rs
@@ -0,0 +1 @@
+mod root_package_loader_test;
diff --git a/crates/shirabe/tests/package/loader/root_package_loader_test.rs b/crates/shirabe/tests/package/loader/root_package_loader_test.rs
index 6aee231..82d60ba 100644
--- a/crates/shirabe/tests/package/loader/root_package_loader_test.rs
+++ b/crates/shirabe/tests/package/loader/root_package_loader_test.rs
@@ -1 +1,35 @@
 //! ref: composer/tests/Composer/Test/Package/Loader/RootPackageLoaderTest.php
+
+// These build a RootPackageLoader with a mocked RepositoryManager and either a mocked
+// ProcessExecutor / VersionGuesser or require constraints whose parsing goes through a
+// look-around regex the regex crate cannot compile.
+
+#[test]
+#[ignore = "RootPackageLoader::load parses require constraints via a look-around regex; mocks RepositoryManager"]
+fn test_stability_flags_parsing() {
+    todo!()
+}
+
+#[test]
+#[ignore = "mocks RepositoryManager and a ProcessExecutor returning a non-zero git result"]
+fn test_no_version_is_visible_in_pretty_version() {
+    todo!()
+}
+
+#[test]
+#[ignore = "mocks RepositoryManager and a VersionGuesser returning a fixed guessed version"]
+fn test_pretty_version_for_root_package_in_version_branch() {
+    todo!()
+}
+
+#[test]
+#[ignore = "mocks RepositoryManager and a ProcessExecutor feeding git branch output"]
+fn test_feature_branch_pretty_version() {
+    todo!()
+}
+
+#[test]
+#[ignore = "mocks RepositoryManager and a ProcessExecutor feeding git branch output"]
+fn test_non_feature_branch_pretty_version() {
+    todo!()
+}
diff --git a/crates/shirabe/tests/package/main.rs b/crates/shirabe/tests/package/main.rs
index c5170c2..951983f 100644
--- a/crates/shirabe/tests/package/main.rs
+++ b/crates/shirabe/tests/package/main.rs
@@ -4,5 +4,6 @@ mod test_case;
 mod archiver;
 mod base_package_test;
 mod complete_package_test;
+mod loader;
 mod root_alias_package_test;
 mod version;