feat: Refactor and expand CLI smoke tests for subcommand/config coverage (#581)

tests/unit/test_init.py

@@ -1358,3 +1358,29 @@ class TestKleinanzeigenBotChangedAds:
 
                 # The changed ad should be loaded with 'due' selector because it's due for republication
                 assert len(ads_to_publish) == 1
+
+
+def test_file_logger_writes_message(tmp_path:Path, caplog:pytest.LogCaptureFixture) -> None:
+    """
+    Unit: Logger can be initialized and used, robust to pytest log capture.
+    """
+    log_path = tmp_path / "logger_test.log"
+    logger_name = "logger_test_logger_unique"
+    logger = logging.getLogger(logger_name)
+    logger.setLevel(logging.DEBUG)
+    logger.propagate = False
+    for h in list(logger.handlers):
+        logger.removeHandler(h)
+    handle = logging.FileHandler(str(log_path), encoding = "utf-8")
+    handle.setLevel(logging.DEBUG)
+    formatter = logging.Formatter("%(levelname)s:%(name)s:%(message)s")
+    handle.setFormatter(formatter)
+    logger.addHandler(handle)
+    logger.info("Logger test log message")
+    handle.flush()
+    handle.close()
+    logger.removeHandler(handle)
+    assert log_path.exists()
+    with open(log_path, "r", encoding = "utf-8") as f:
+        contents = f.read()
+    assert "Logger test log message" in contents