test(init): add yaml without repos key

Author: bearomorphism

commitizen/commands/init.py

@@ -366,9 +366,9 @@ def _read_pre_commit_config(self) -> dict[Any, Any]:
 
             if any("commitizen" in hook["repo"] for hook in repos):
                 out.write("commitizen already in pre-commit config")
-            else:
-                config_data["repos"].append(CZ_HOOK_CONFIG)
+                return config_data
 
+            config_data["repos"].append(CZ_HOOK_CONFIG)
             return config_data
 
     def _update_config_file(

tests/commands/test_init_command.py

@@ -213,6 +213,19 @@ def test_pre_commit_config_without_cz_hook(_, default_choice, tmpdir, config):
             check_cz_config(default_choice)
             check_pre_commit_config([existing_hook_config, CZ_HOOK_CONFIG])
 
+    def test_pre_commit_config_yaml_without_repos(_, default_choice, tmpdir, config):
+        with tmpdir.as_cwd():
+            # Write a dictionary YAML content without 'repos' key
+            p = tmpdir.join(PRE_COMMIT_CONFIG_FILENAME)
+            p.write(
+                yaml.safe_dump({"some_other_key": "value"})
+            )  # Dictionary without 'repos' key
+
+            commands.Init(config)()
+            check_cz_config(default_choice)
+            # Should use DEFAULT_CONFIG since the file content doesn't have 'repos' key
+            check_pre_commit_config([CZ_HOOK_CONFIG])
+
     def test_cz_hook_exists_in_pre_commit_config(_, default_choice, tmpdir, config):
         with tmpdir.as_cwd():
             p = tmpdir.join(PRE_COMMIT_CONFIG_FILENAME)