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, 65 insertions, 0 deletions

diff --git a/crates/shirabe/tests/repository/vcs/git_driver_test.rs b/crates/shirabe/tests/repository/vcs/git_driver_test.rs
index 85c9f0b..c36470c 100644
--- a/crates/shirabe/tests/repository/vcs/git_driver_test.rs
+++ b/crates/shirabe/tests/repository/vcs/git_driver_test.rs
@@ -4,11 +4,76 @@
 // that reaches curl_multi_init, todo!()) to feed git command output; mocking is not
 // available here.
 
+use indexmap::IndexMap;
+use shirabe::config::Config;
+use shirabe::util::filesystem::Filesystem;
+use shirabe::util::platform::Platform;
+use shirabe_php_shim::PhpMixed;
+use tempfile::TempDir;
+
+struct SetUp {
+    home: TempDir,
+    config: Config,
+    network_env: Option<String>,
+}
+
+fn set_up() -> SetUp {
+    let home = TempDir::new().unwrap();
+    let mut config = Config::new(true, None);
+    let mut top: IndexMap<String, PhpMixed> = IndexMap::new();
+    let mut config_section: IndexMap<String, PhpMixed> = IndexMap::new();
+    config_section.insert(
+        "home".to_string(),
+        PhpMixed::String(home.path().to_string_lossy().into_owned()),
+    );
+    top.insert("config".to_string(), PhpMixed::Array(config_section));
+    config.merge(&top, Config::SOURCE_UNKNOWN);
+    let network_env = Platform::get_env("COMPOSER_DISABLE_NETWORK");
+
+    SetUp {
+        home,
+        config,
+        network_env,
+    }
+}
+
+fn tear_down(home: &std::path::Path, network_env: &Option<String>) {
+    let mut fs = Filesystem::new(None);
+    fs.remove_directory(home).unwrap();
+    match network_env {
+        None => Platform::clear_env("COMPOSER_DISABLE_NETWORK"),
+        Some(network_env) => Platform::put_env("COMPOSER_DISABLE_NETWORK", network_env),
+    }
+}
+
+struct TearDown {
+    home: std::path::PathBuf,
+    network_env: Option<String>,
+}
+
+impl TearDown {
+    fn new(home: std::path::PathBuf, network_env: Option<String>) -> Self {
+        TearDown { home, network_env }
+    }
+}
+
+impl Drop for TearDown {
+    fn drop(&mut self) {
+        tear_down(&self.home, &self.network_env);
+    }
+}
+
 macro_rules! git_stub {
     ($name:ident) => {
         #[test]
         #[ignore = "constructs a GitDriver and mocks a ProcessExecutor/HttpDownloader (curl_multi_init todo!())"]
         fn $name() {
+            let SetUp {
+                home,
+                config: _,
+                network_env,
+            } = set_up();
+            let _tear_down = TearDown::new(home.path().to_path_buf(), network_env);
             todo!()
         }
     };