test: fix failing tests due to missing route

declaration in conftest. The missing route was added in
d4557fb

tests/integration/conftest.py

@@ -149,6 +149,11 @@ def flask_app():
     app.add_url_rule("/", view_func=routes.index, methods=["GET"])
     app.add_url_rule("/about", view_func=routes.about, methods=["GET"])
     app.add_url_rule("/help", view_func=routes.help, methods=["GET"])
+    app.add_url_rule(
+        "/case-studies/cultural-landmarks",
+        view_func=routes.case_study_cultural_landmarks,
+        methods=["GET"],
+    )
 
     Babel(app, locale_selector=get_locale)  # for translations