Refactor: extract vCard generator to utils; make BASE_DIR configurable for tests; add unit and integration tests for vcard export; update app to use utils

tests/test_vcard_export.py

@@ -5,7 +5,7 @@ from app import app, db, Frage
 
 
 @pytest.fixture
-def client(tmp_path, monkeypatch):
+def client(tmp_path):
     # Use a temporary directory for vcards and a temporary sqlite db
     # temp DB file
     db_file = tmp_path / "test.db"
@@ -25,12 +25,14 @@ def client(tmp_path, monkeypatch):
         q = Frage(text='Testfrage?')
         db.session.add(q)
         db.session.commit()
+        # record question id for use in test POST data
+        app.config['TEST_QUESTION_ID'] = q.id
 
     with app.test_client() as test_client:
         yield test_client
 
 
-def test_vcard_created_after_submit(client, tmp_path):
+def test_vcard_created_after_submit(client):
     data = {
         'vorname': 'Max',
         'nachname': 'Mustermann',
@@ -42,7 +44,8 @@ def test_vcard_created_after_submit(client, tmp_path):
         'telefon_vorwahl': '49',
         'telefon_nummer': '1234567',
         'email': 'max@example.com',
-        'frage_1': 'Antwort'
+        # question id set in fixture
+        f'frage_{app.config.get("TEST_QUESTION_ID")}': 'Antwort'
     }
 
     # Submit the form