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/downloader/zip_downloader_test.rs b/crates/shirabe/tests/downloader/zip_downloader_test.rs
index 0c8657c..aa4646c 100644
--- a/crates/shirabe/tests/downloader/zip_downloader_test.rs
+++ b/crates/shirabe/tests/downloader/zip_downloader_test.rs
@@ -1,5 +1,50 @@
 //! ref: composer/tests/Composer/Test/Downloader/ZipDownloaderTest.php
 
+use shirabe::util::filesystem::Filesystem;
+use tempfile::TempDir;
+
+struct SetUp {
+    test_dir: TempDir,
+    filename: std::path::PathBuf,
+}
+
+fn set_up() -> SetUp {
+    let test_dir = TempDir::new().unwrap();
+    // The IO/Config/HttpDownloader/Package mocks are not ported; HttpDownloader construction
+    // additionally reaches curl_multi_init (todo!()).
+    let () = todo!();
+    #[allow(unreachable_code)]
+    {
+        let filename = test_dir.path().join("composer-test.zip");
+        std::fs::write(&filename, "zip").unwrap();
+        SetUp { test_dir, filename }
+    }
+}
+
+fn tear_down(test_dir: &std::path::Path) {
+    let mut fs = Filesystem::new(None);
+    fs.remove_directory(test_dir).unwrap();
+    // setPrivateProperty('hasZipArchive', null) resets a ZipDownloader static via reflection;
+    // the static is not reachable from a test here.
+    todo!()
+}
+
+struct TearDown {
+    test_dir: std::path::PathBuf,
+}
+
+impl TearDown {
+    fn new(test_dir: std::path::PathBuf) -> Self {
+        TearDown { test_dir }
+    }
+}
+
+impl Drop for TearDown {
+    fn drop(&mut self) {
+        tear_down(&self.test_dir);
+    }
+}
+
 // These construct a ZipDownloader with a mocked IO/HttpDownloader/ProcessExecutor and rely
 // on ZipArchive extraction (todo!() in the php-shim) plus mocked unzip behaviour.
 macro_rules! stub {
@@ -7,6 +52,9 @@ macro_rules! stub {
         #[test]
         #[ignore = "mocks IO/HttpDownloader/ProcessExecutor and uses ZipArchive (todo!())"]
         fn $name() {
+            let set_up = set_up();
+            let _tear_down = TearDown::new(set_up.test_dir.path().to_path_buf());
+            let _ = (&set_up.test_dir, &set_up.filename);
             todo!()
         }
     };