✅ test(config): cover --init overwrite prompts

tests/lint/test_config.rs

@@ -434,6 +434,64 @@ fn success_init_config() {
     assert_eq!(file_contents.trim(), get_default_config().trim());
 }
 
+#[test]
+fn success_config_overwrite_no() {
+    let tmp_dir = tempfile::tempdir().unwrap();
+    let tmp_dir_path = tmp_dir.path();
+
+    // Create an initial sumi.toml with custom content
+    let initial_config_content = r#"# Initial configuration
+quiet = true
+"#;
+    let config_path = tmp_dir_path.join("sumi.toml");
+    std::fs::write(&config_path, initial_config_content).unwrap();
+
+    // Attempt to initialize the default config, simulating 'no' to the overwrite prompt.
+    let mut cmd = Command::cargo_bin("git-sumi").unwrap();
+    cmd.current_dir(tmp_dir_path)
+        .arg("--init")
+        .write_stdin("n\n")
+        .assert()
+        .stdout(contains("Overwrite? (y/n) [n] "))
+        .success();
+
+    let file_contents = std::fs::read_to_string(config_path).unwrap();
+    assert_eq!(
+        file_contents, initial_config_content,
+        "The configuration file should not have been overwritten."
+    );
+}
+
+#[test]
+fn success_config_overwrite_yes() {
+    let tmp_dir = tempfile::tempdir().unwrap();
+    let tmp_dir_path = tmp_dir.path();
+
+    let initial_config_content = r#"# Initial configuration
+quiet = true
+"#;
+    let config_path = tmp_dir_path.join("sumi.toml");
+    std::fs::write(&config_path, initial_config_content).unwrap();
+
+    // Attempt to initialize the default config, simulating 'yes' to the overwrite prompt.
+    let mut cmd = Command::cargo_bin("git-sumi").unwrap();
+    cmd.current_dir(tmp_dir_path)
+        .arg("--init")
+        .write_stdin("y\n")
+        .assert()
+        .stdout(contains("Overwrite? (y/n) [n] "))
+        .success();
+
+    let file_contents = std::fs::read_to_string(config_path).unwrap();
+    let expected_default_config = get_default_config().trim();
+
+    assert_eq!(
+        file_contents.trim(),
+        expected_default_config,
+        "The configuration file should have been overwritten with the default configuration."
+    );
+}
+
 fn init_tmp_git_repo() -> tempfile::TempDir {
     let tmp_dir = tempfile::tempdir().unwrap();
     let tmp_dir_path = tmp_dir.path();
@@ -480,3 +538,58 @@ fn error_init_hook_in_non_git_repo() {
         .failure()
         .stderr(contains("No .git directory found"));
 }
+
+#[test]
+fn success_init_hook_overwrite_yes() {
+    let tmp_dir = init_tmp_git_repo();
+    let tmp_dir_path = tmp_dir.path();
+    let hooks_dir = tmp_dir_path.join(".git/hooks");
+    fs::create_dir_all(&hooks_dir).unwrap(); // Ensure the hooks directory exists.
+    let hook_path = hooks_dir.join("commit-msg");
+    fs::write(&hook_path, "#!/bin/sh\necho \"Existing hook\"").unwrap(); // Create a dummy hook.
+
+    let mut cmd = Command::cargo_bin("git-sumi").unwrap();
+    cmd.current_dir(tmp_dir_path)
+        .arg("--init")
+        .arg("hook")
+        .write_stdin("y\n") // Simulate user typing 'y' and pressing Enter.
+        .assert()
+        .success()
+        .stdout(contains("Overwrite? (y/n) [n]")); // Verify the prompt is displayed
+
+    let hook_content = fs::read_to_string(hook_path).expect("Failed to read hook file");
+    assert!(
+        hook_content.contains("Commit-msg hook generated by git-sumi"),
+        "The commit-msg hook does not contain the expected content."
+    );
+}
+
+#[test]
+fn success_init_hook_overwrite_no() {
+    let tmp_dir = init_tmp_git_repo();
+    let tmp_dir_path = tmp_dir.path();
+    let hooks_dir = tmp_dir_path.join(".git/hooks");
+    fs::create_dir_all(&hooks_dir).unwrap();
+    let original_hook_content = "#!/bin/sh\necho \"Existing hook\"";
+    let hook_path = hooks_dir.join("commit-msg");
+    fs::write(&hook_path, original_hook_content).unwrap(); // Create a dummy hook.
+
+    let mut cmd = Command::cargo_bin("git-sumi").unwrap();
+    cmd.current_dir(tmp_dir_path)
+        .arg("--init")
+        .arg("hook")
+        .write_stdin("n\n") // Simulate user typing 'n' and pressing Enter.
+        .assert()
+        .success()
+        .stdout(contains("Overwrite? (y/n) [n] "));
+
+    let hook_content = fs::read_to_string(&hook_path).expect("Failed to read hook file");
+    assert_eq!(
+        hook_content, original_hook_content,
+        "The commit-msg hook content should remain unchanged."
+    );
+    assert!(
+        !hook_content.contains("Commit-msg hook generated by git-sumi"),
+        "The commit-msg hook should not contain the default content generated by git-sumi."
+    );
+}