Improve explanations

test_amateurfunk_anki.py

@@ -512,6 +512,23 @@ class TestRealExplanationsFile(unittest.TestCase):
         categories = aa.collect_categories(catalog)
         aa._check_explanation_keys_against_catalog(explanations, categories)
 
+    def test_repo_explanations_do_not_source_the_question_catalog(self):
+        repo = Path(__file__).resolve().parent
+        explanations_path = repo / "explanations.json"
+        if not explanations_path.exists():
+            self.skipTest("explanations.json not available")
+        explanations = aa.load_explanations(explanations_path)
+        forbidden = [
+            "Fragenkatalog/Pruefungsfragen",
+            "Fragenkatalog/BetriebVorschrift",
+        ]
+        offenders = sorted(
+            key
+            for key, value in explanations.items()
+            if any(token in value["source"] for token in forbidden)
+        )
+        self.assertEqual([], offenders)
+
 
 if __name__ == "__main__":
     unittest.main()