test(tests): port setUp/tearDown as set_up/tear_down with TearDown

Port PHP setUp/tearDown across the ported integration tests using
same-named set_up()/tear_down() functions and a TearDown struct whose
Drop runs tear_down(). Fixture-init setUp returns its fixtures;
tmpdir-style setUp/tearDown carry state in TearDown fields. Parts that
depend on unported infrastructure (PHPUnit mocks, Config::merge, the PHP
error handler) stay todo!() and are only wired into ignored stubs to
avoid breaking live tests.

Also fix shirabe-php-shim putenv to handle the no-'=' form (PHP unsets
the variable), which Platform::clear_env relies on for the env-clearing
tearDowns.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/crates/shirabe/tests/package/loader/array_loader_test.rs b/crates/shirabe/tests/package/loader/array_loader_test.rs
index fce85a7..79b5d78 100644
--- a/crates/shirabe/tests/package/loader/array_loader_test.rs
+++ b/crates/shirabe/tests/package/loader/array_loader_test.rs
@@ -1,5 +1,11 @@
 //! ref: composer/tests/Composer/Test/Package/Loader/ArrayLoaderTest.php
 
+use shirabe::package::loader::ArrayLoader;
+
+fn set_up() -> ArrayLoader {
+    ArrayLoader::new(None, false)
+}
+
 // ArrayLoader::load parses version/link constraints through a look-around regex the regex
 // crate cannot compile.
 macro_rules! stub {
@@ -7,6 +13,7 @@ macro_rules! stub {
         #[test]
         #[ignore = "ArrayLoader::load parses constraints via a look-around regex the regex crate cannot compile"]
         fn $name() {
+            let _loader = set_up();
             todo!()
         }
     };