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/fossil_downloader_test.rs b/crates/shirabe/tests/downloader/fossil_downloader_test.rs
index 89e0a9d..9c9dbe4 100644
--- a/crates/shirabe/tests/downloader/fossil_downloader_test.rs
+++ b/crates/shirabe/tests/downloader/fossil_downloader_test.rs
@@ -1,5 +1,35 @@
 //! ref: composer/tests/Composer/Test/Downloader/FossilDownloaderTest.php
 
+use shirabe::util::filesystem::Filesystem;
+use tempfile::TempDir;
+
+fn set_up() -> TempDir {
+    TempDir::new().unwrap()
+}
+
+fn tear_down(working_dir: &std::path::Path) {
+    if working_dir.is_dir() {
+        let mut fs = Filesystem::new(None);
+        fs.remove_directory(working_dir).unwrap();
+    }
+}
+
+struct TearDown {
+    working_dir: std::path::PathBuf,
+}
+
+impl TearDown {
+    fn new(working_dir: std::path::PathBuf) -> Self {
+        TearDown { working_dir }
+    }
+}
+
+impl Drop for TearDown {
+    fn drop(&mut self) {
+        tear_down(&self.working_dir);
+    }
+}
+
 // Every case constructs a FossilDownloader with a mocked IO/Config and a mocked
 // ProcessExecutor to feed fossil command output; a real HttpDownloader reaches
 // curl_multi_init (todo!()), and ProcessExecutor mocking is not available.
@@ -7,35 +37,53 @@
 #[test]
 #[ignore = "mocks ProcessExecutor/IO and needs an HttpDownloader (curl_multi_init todo!())"]
 fn test_install_for_package_without_source_reference() {
+    let working_dir = set_up();
+    let _tear_down = TearDown::new(working_dir.path().to_path_buf());
+    let _ = &working_dir;
     todo!()
 }
 
 #[test]
 #[ignore = "mocks ProcessExecutor/IO and needs an HttpDownloader (curl_multi_init todo!())"]
 fn test_install() {
+    let working_dir = set_up();
+    let _tear_down = TearDown::new(working_dir.path().to_path_buf());
+    let _ = &working_dir;
     todo!()
 }
 
 #[test]
 #[ignore = "mocks ProcessExecutor/IO and needs an HttpDownloader (curl_multi_init todo!())"]
 fn test_updatefor_package_without_source_reference() {
+    let working_dir = set_up();
+    let _tear_down = TearDown::new(working_dir.path().to_path_buf());
+    let _ = &working_dir;
     todo!()
 }
 
 #[test]
 #[ignore = "mocks ProcessExecutor/IO and needs an HttpDownloader (curl_multi_init todo!())"]
 fn test_update() {
+    let working_dir = set_up();
+    let _tear_down = TearDown::new(working_dir.path().to_path_buf());
+    let _ = &working_dir;
     todo!()
 }
 
 #[test]
 #[ignore = "mocks ProcessExecutor/IO and needs an HttpDownloader (curl_multi_init todo!())"]
 fn test_remove() {
+    let working_dir = set_up();
+    let _tear_down = TearDown::new(working_dir.path().to_path_buf());
+    let _ = &working_dir;
     todo!()
 }
 
 #[test]
 #[ignore = "mocks ProcessExecutor/IO and needs an HttpDownloader (curl_multi_init todo!())"]
 fn test_get_installation_source() {
+    let working_dir = set_up();
+    let _tear_down = TearDown::new(working_dir.path().to_path_buf());
+    let _ = &working_dir;
     todo!()
 }