feat: add create-config subcommand to generate default config (#577)

tests/smoke/test_smoke_health.py

@@ -18,6 +18,16 @@ from kleinanzeigen_bot.utils import i18n
 from tests.conftest import DummyBrowser, DummyPage, SmokeKleinanzeigenBot
 
 
+def run_cli_subcommand(args:list[str], cwd:str | None = None) -> subprocess.CompletedProcess[str]:
+    """
+    Run the kleinanzeigen-bot CLI as a subprocess with the given arguments.
+    Returns the CompletedProcess object.
+    """
+    cli_module = "kleinanzeigen_bot.__main__"
+    cmd = [sys.executable, "-m", cli_module] + args
+    return subprocess.run(cmd, check = False, capture_output = True, text = True, cwd = cwd)  # noqa: S603
+
+
 @pytest.mark.smoke
 def test_app_starts(smoke_bot:SmokeKleinanzeigenBot) -> None:
     """Smoke: Bot can be instantiated and started without error."""
@@ -97,7 +107,15 @@ def test_dummy_browser_session() -> None:
 @pytest.mark.smoke
 def test_cli_entrypoint_help_runs() -> None:
     """Smoke: CLI entry point runs with --help and exits cleanly (subprocess)."""
-    cli_module = "kleinanzeigen_bot.__main__"
-    result = subprocess.run([sys.executable, "-m", cli_module, "--help"], check = False, capture_output = True, text = True)  # noqa: S603
+    result = run_cli_subcommand(["--help"])
     assert result.returncode in {0, 1}, f"CLI exited with unexpected code: {result.returncode}\nstdout: {result.stdout}\nstderr: {result.stderr}"
     assert "Usage" in result.stdout or "usage" in result.stdout or "help" in result.stdout.lower(), f"No help text in CLI output: {result.stdout}"
+
+
+@pytest.mark.smoke
+def test_cli_create_config_creates_file(tmp_path:Path) -> None:
+    """Smoke: CLI 'create-config' creates a config.yaml file in the current directory."""
+    result = run_cli_subcommand(["create-config"], cwd = str(tmp_path))
+    config_path = tmp_path / "config.yaml"
+    assert result.returncode == 0, f"CLI exited with code {result.returncode}\nstdout: {result.stdout}\nstderr: {result.stderr}"
+    assert config_path.exists(), "config.yaml was not created by create-config command"

tests/unit/test_bot.py

@@ -2,12 +2,12 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
 # SPDX-ArtifactOfProjectHomePage: https://github.com/Second-Hand-Friends/kleinanzeigen-bot/
 import gc, pytest  # isort: skip
+import pathlib
 
 from kleinanzeigen_bot import KleinanzeigenBot
 
 
 class TestKleinanzeigenBot:
-
     @pytest.fixture
     def bot(self) -> KleinanzeigenBot:
         return KleinanzeigenBot()
@@ -26,6 +26,37 @@ class TestKleinanzeigenBot:
         assert bot.ads_selector == "all"
         assert bot.keep_old_ads
 
+    def test_parse_args_create_config(self, bot:KleinanzeigenBot) -> None:
+        """Test parsing of create-config command"""
+        bot.parse_args(["app", "create-config"])
+        assert bot.command == "create-config"
+
+    def test_create_default_config_logs_error_if_exists(self, tmp_path:pathlib.Path, bot:KleinanzeigenBot, caplog:pytest.LogCaptureFixture) -> None:
+        """Test that create_default_config logs an error if the config file already exists."""
+        config_path = tmp_path / "config.yaml"
+        config_path.write_text("dummy: value")
+        bot.config_file_path = str(config_path)
+        with caplog.at_level("ERROR"):
+            bot.create_default_config()
+        assert any("already exists" in m for m in caplog.messages)
+
+    def test_create_default_config_creates_file(self, tmp_path:pathlib.Path, bot:KleinanzeigenBot) -> None:
+        """Test that create_default_config creates a config file if it does not exist."""
+        config_path = tmp_path / "config.yaml"
+        bot.config_file_path = str(config_path)
+        assert not config_path.exists()
+        bot.create_default_config()
+        assert config_path.exists()
+        content = config_path.read_text()
+        assert "username: changeme" in content
+
+    def test_load_config_handles_missing_file(self, tmp_path:pathlib.Path, bot:KleinanzeigenBot) -> None:
+        """Test that load_config creates a default config file if missing. No info log is expected anymore."""
+        config_path = tmp_path / "config.yaml"
+        bot.config_file_path = str(config_path)
+        bot.load_config()
+        assert config_path.exists()
+
     def test_get_version(self, bot:KleinanzeigenBot) -> None:
         """Test version retrieval"""
         version = bot.get_version()

tests/unit/test_init.py

@@ -291,17 +291,12 @@ class TestKleinanzeigenBotConfiguration:
         test_bot:KleinanzeigenBot,
         test_data_dir:str
     ) -> None:
-        """Verify that loading a missing config file creates default config."""
+        """Verify that loading a missing config file creates default config. No info log is expected anymore."""
         config_path = Path(test_data_dir) / "missing_config.yaml"
         config_path.unlink(missing_ok = True)
         test_bot.config_file_path = str(config_path)
-
-        with patch.object(LOG, "warning") as mock_warning:
-            test_bot.load_config()
-            mock_warning.assert_called_once()
-            assert config_path.exists()
-            assert test_bot.config.login.username == "changeme"  # noqa: S105 placeholder for default config, not a real username
-            assert test_bot.config.login.password == "changeme"  # noqa: S105 placeholder for default config, not a real password
+        test_bot.load_config()
+        assert config_path.exists()
 
     def test_load_config_validates_required_fields(self, test_bot:KleinanzeigenBot, test_data_dir:str) -> None:
         """Verify that config validation checks required fields."""