1 files changed, 28 insertions, 2 deletions
diff --git a/crates/shirabe/tests/command/about_command_test.rs b/crates/shirabe/tests/command/about_command_test.rs
index 591fbfa..bb726cf 100644
--- a/crates/shirabe/tests/command/about_command_test.rs
+++ b/crates/shirabe/tests/command/about_command_test.rs
@@ -1,7 +1,33 @@
 //! ref: composer/tests/Composer/Test/Command/AboutCommandTest.php
 
+use crate::test_case::{RunOptions, get_application_tester};
+use serial_test::serial;
+use shirabe::composer;
+use shirabe_php_shim::PhpMixed;
+
 #[test]
-#[ignore = "missing get_application_tester (ApplicationTester) infrastructure and Application::get_display/set_auto_exit"]
+#[serial]
 fn test_about() {
-    todo!()
+    let composer_version = composer::get_version();
+    let mut app_tester = get_application_tester();
+    let status_code = app_tester
+        .run(
+            vec![(PhpMixed::from("command"), PhpMixed::from("about"))],
+            RunOptions::default(),
+        )
+        .unwrap();
+    assert_eq!(0, status_code);
+
+    assert!(app_tester.get_display().contains(&format!(
+        "Composer - Dependency Manager for PHP - version {composer_version}"
+    )));
+
+    assert!(app_tester.get_display().contains(
+        "Composer is a dependency manager tracking local dependencies of your projects and libraries."
+    ));
+    assert!(
+        app_tester
+            .get_display()
+            .contains("See https://getcomposer.org/ for more information.")
+    );
 }