test(command): port Diagnose/Exec/ClearCache command tests

Stubbed as todo!()/ignored: all need the ApplicationTester/initTempComposer
harness, which is not yet ported.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

4 files changed, 45 insertions, 0 deletions

diff --git a/crates/shirabe/tests/command/clear_cache_command_test.rs b/crates/shirabe/tests/command/clear_cache_command_test.rs
index 29eb90e..0e03548 100644
--- a/crates/shirabe/tests/command/clear_cache_command_test.rs
+++ b/crates/shirabe/tests/command/clear_cache_command_test.rs
@@ -1 +1,19 @@
 //! ref: composer/tests/Composer/Test/Command/ClearCacheCommandTest.php
+
+#[test]
+#[ignore = "requires the ApplicationTester/initTempComposer harness, which is not yet ported"]
+fn test_clear_cache_command_success() {
+    todo!()
+}
+
+#[test]
+#[ignore = "requires the ApplicationTester/initTempComposer harness, which is not yet ported"]
+fn test_clear_cache_command_with_option_garbage_collection() {
+    todo!()
+}
+
+#[test]
+#[ignore = "requires the ApplicationTester/initTempComposer harness, which is not yet ported"]
+fn test_clear_cache_command_with_option_no_cache() {
+    todo!()
+}
diff --git a/crates/shirabe/tests/command/diagnose_command_test.rs b/crates/shirabe/tests/command/diagnose_command_test.rs
index 0ed56d3..4b5dc9a 100644
--- a/crates/shirabe/tests/command/diagnose_command_test.rs
+++ b/crates/shirabe/tests/command/diagnose_command_test.rs
@@ -1 +1,13 @@
 //! ref: composer/tests/Composer/Test/Command/DiagnoseCommandTest.php
+
+#[test]
+#[ignore = "requires the ApplicationTester/initTempComposer harness, which is not yet ported"]
+fn test_cmd_fail() {
+    todo!()
+}
+
+#[test]
+#[ignore = "requires the ApplicationTester/initTempComposer harness, which is not yet ported"]
+fn test_cmd_success() {
+    todo!()
+}
diff --git a/crates/shirabe/tests/command/exec_command_test.rs b/crates/shirabe/tests/command/exec_command_test.rs
index 59ac4d6..89963db 100644
--- a/crates/shirabe/tests/command/exec_command_test.rs
+++ b/crates/shirabe/tests/command/exec_command_test.rs
@@ -1 +1,13 @@
 //! ref: composer/tests/Composer/Test/Command/ExecCommandTest.php
+
+#[test]
+#[ignore = "requires the ApplicationTester/initTempComposer harness, which is not yet ported"]
+fn test_list_throws_if_no_binaries_exist() {
+    todo!()
+}
+
+#[test]
+#[ignore = "requires the ApplicationTester/initTempComposer harness, which is not yet ported"]
+fn test_list() {
+    todo!()
+}
diff --git a/crates/shirabe/tests/command/main.rs b/crates/shirabe/tests/command/main.rs
index b2774dd..f8aef08 100644
--- a/crates/shirabe/tests/command/main.rs
+++ b/crates/shirabe/tests/command/main.rs
@@ -1 +1,4 @@
 mod about_command_test;
+mod clear_cache_command_test;
+mod diagnose_command_test;
+mod exec_command_test;