fix: Handle None values in calculate_content_hash - Add test case to reproduce TypeError with None values - Fix handling of None values in special_attributes, shipping_options and images - Ensure consistent empty value handling (empty string instead of 'None') - Fixes #395

tests/test_utils.py

@@ -28,3 +28,26 @@ def test_ensure() -> None:
 
     with pytest.raises(AssertionError):
         utils.ensure(lambda: False, "FALSE", timeout = 2)
+
+
+def test_calculate_content_hash_with_none_values() -> None:
+    """Test calculate_content_hash with None values in the ad configuration."""
+    ad_cfg = {
+        # Minimale Konfiguration mit None-Werten wie im Bug-Report beschrieben
+        "id": "123456789",
+        "created_on": "2022-07-19T07:30:20.489289",
+        "updated_on": "2025-01-22T19:46:46.735896",
+        "title": "Test Anzeige",
+        "description": "Test Beschreibung",
+        "images": [None, "/path/to/image.jpg", None],  # None-Werte in der images Liste
+        "shipping_options": None,  # None statt Liste
+        "special_attributes": None,  # None statt Dictionary
+        "contact": {
+            "street": None  # None-Wert in contact
+        }
+    }
+
+    # Sollte keinen TypeError werfen
+    hash_value = utils.calculate_content_hash(ad_cfg)
+    assert isinstance(hash_value, str)
+    assert len(hash_value) == 64  # SHA-256 Hash ist 64 Zeichen lang