GRM-34: fix: skip commit when version file unchanged in release.py

tests/unit/test_release.py

@@ -137,11 +137,23 @@ class TestUpdateInitVersion:
 class TestCreateReleaseCommit:
     @patch("scripts.release.run_cmd")
     def test_commits(self, mock_run_cmd: MagicMock) -> None:
-        create_release_commit("0.2.0")
+        # git diff --cached --quiet returns 1 (changes exist)
+        mock_run_cmd.return_value = MagicMock(returncode=1, stdout="", stderr="")
+        result = create_release_commit("0.2.0")
+        assert result is True
         calls = [c.args[0] for c in mock_run_cmd.call_args_list]
         assert ["git", "add", "src/gitea_runner_manager/__init__.py"] in calls
         assert ["git", "commit", "-m", "chore(release): prepare for v0.2.0"] in calls
 
+    @patch("scripts.release.run_cmd")
+    def test_skips_when_no_changes(self, mock_run_cmd: MagicMock) -> None:
+        # git diff --cached --quiet returns 0 (no changes)
+        mock_run_cmd.return_value = MagicMock(returncode=0, stdout="", stderr="")
+        result = create_release_commit("0.1.0")
+        assert result is False
+        calls = [c.args[0] for c in mock_run_cmd.call_args_list]
+        assert ["git", "commit", "-m", "chore(release): prepare for v0.1.0"] not in calls
+
 
 class TestCreateAndPushTag:
     @patch("scripts.release.run_cmd")
@@ -258,7 +270,7 @@ class TestMain:
 
     @patch.dict("os.environ", {})
     @patch("scripts.release.create_and_push_tag")
-    @patch("scripts.release.create_release_commit")
+    @patch("scripts.release.create_release_commit", return_value=True)
     @patch("scripts.release.update_init_version")
     @patch("scripts.release.get_changelog", return_value="changelog")
     @patch("scripts.release.get_latest_tag", return_value="v0.1.0")
@@ -284,3 +296,31 @@ class TestMain:
         mock_update_init.assert_called_once_with("0.2.0")
         mock_commit.assert_called_once_with("0.2.0")
         mock_tag.assert_called_once_with("0.2.0", "changelog", False)
+
+    @patch.dict("os.environ", {})
+    @patch("scripts.release.create_and_push_tag")
+    @patch("scripts.release.create_release_commit", return_value=False)
+    @patch("scripts.release.update_init_version")
+    @patch("scripts.release.get_changelog", return_value="changelog")
+    @patch("scripts.release.get_latest_tag", return_value="v0.1.0")
+    @patch("scripts.release.get_bumped_version", return_value="0.1.0")
+    @patch("scripts.release.has_unreleased_changes", return_value=True)
+    @patch("scripts.release.run_cmd")
+    def test_full_flow_no_commit(
+        self,
+        mock_run_cmd: MagicMock,
+        mock_has: MagicMock,
+        mock_bumped: MagicMock,
+        mock_latest: MagicMock,
+        mock_changelog: MagicMock,
+        mock_update_init: MagicMock,
+        mock_commit: MagicMock,
+        mock_tag: MagicMock,
+    ) -> None:
+        """When version is unchanged, skip commit but still tag."""
+        mock_run_cmd.return_value = MagicMock(returncode=0, stdout="master\n", stderr="")
+        runner = CliRunner()
+        result = runner.invoke(main, [])
+        assert result.exit_code == 0
+        assert "Skipping commit push" in result.output
+        mock_tag.assert_called_once_with("0.1.0", "changelog", False)