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, 21 insertions, 0 deletions

diff --git a/crates/shirabe/tests/util/error_handler_test.rs b/crates/shirabe/tests/util/error_handler_test.rs
index 92ce4e8..8f42bca 100644
--- a/crates/shirabe/tests/util/error_handler_test.rs
+++ b/crates/shirabe/tests/util/error_handler_test.rs
@@ -5,6 +5,27 @@
 // trigger those by undefined-index access / array_merge misuse. There is no equivalent
 // runtime mechanism in Rust to port faithfully.
 
+#[allow(dead_code)]
+fn set_up() {
+    // ErrorHandler::register() installs a PHP set_error_handler; no Rust equivalent.
+    todo!()
+}
+
+#[allow(dead_code)]
+fn tear_down() {
+    // restore_error_handler() is PHP runtime machinery; no Rust equivalent.
+    todo!()
+}
+
+#[allow(dead_code)]
+struct TearDown;
+
+impl Drop for TearDown {
+    fn drop(&mut self) {
+        tear_down();
+    }
+}
+
 #[test]
 #[ignore = "relies on PHP's set_error_handler converting an undefined-array-key notice into an ErrorException; no Rust equivalent"]
 fn test_error_handler_capture_notice() {