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, 48 insertions, 0 deletions

diff --git a/crates/shirabe/tests/util/filesystem_test.rs b/crates/shirabe/tests/util/filesystem_test.rs
index 4ed9c14..e101c79 100644
--- a/crates/shirabe/tests/util/filesystem_test.rs
+++ b/crates/shirabe/tests/util/filesystem_test.rs
@@ -3,6 +3,54 @@
 // These exercise Filesystem path helpers and on-disk operations (sizes, copy, symlinks and
 // junctions over a temp tree). The filesystem fixtures and platform-specific symlink/junction
 // behaviour are not ported.
+use shirabe::util::filesystem::Filesystem;
+use shirabe_php_shim::{dirname, is_dir, is_file};
+
+#[allow(dead_code)]
+struct SetUp {
+    fs: Filesystem,
+    working_dir: String,
+    test_file: String,
+}
+
+#[allow(dead_code)]
+fn set_up() -> SetUp {
+    let fs = Filesystem::new(None);
+    // getUniqueTmpDirectory is base TestCase infrastructure that is not ported.
+    let working_dir: String = todo!();
+    #[allow(unreachable_code)]
+    let unique_tmp: String = todo!();
+    #[allow(unreachable_code)]
+    let test_file: String = format!("{unique_tmp}/composer_test_file");
+    #[allow(unreachable_code)]
+    SetUp {
+        fs,
+        working_dir,
+        test_file,
+    }
+}
+
+#[allow(dead_code)]
+fn tear_down(set_up: &mut SetUp) {
+    if is_dir(&set_up.working_dir) {
+        let _ = set_up.fs.remove_directory(&set_up.working_dir);
+    }
+    if is_file(&set_up.test_file) {
+        let _ = set_up.fs.remove_directory(dirname(&set_up.test_file));
+    }
+}
+
+#[allow(dead_code)]
+struct TearDown {
+    set_up: SetUp,
+}
+
+impl Drop for TearDown {
+    fn drop(&mut self) {
+        tear_down(&mut self.set_up);
+    }
+}
+
 macro_rules! stub {
     ($name:ident) => {
         #[test]