feat(validate): add script for local testing and minor wording change

Pipfile

@@ -18,6 +18,7 @@ lint = "pylint *.py"
 format = "black ."
 format_check = "black . --check"
 test = "pytest -vv tests/"
+validate_local = "pipenv run env USE_LOCAL_API=1 python download_metadata.py public/serlo-metadata.json && pipenv run python validate_nodes.py"
 
 [requires]
 python_version = "3.11"

serlo_api_client.py

@@ -4,7 +4,7 @@
 
 from gql import gql, Client
 from gql.transport.requests import RequestsHTTPTransport
-
+import os
 
 def fetch_metadata(first=500, after=None) -> Dict[str, Any]:
     query = graphql(
@@ -41,7 +41,10 @@ def fetch_publisher() -> Dict[str, Any]:
 
 
 def execute(query: str, params: Optional[Dict[str, Any]] = None) -> Dict[str, Any]:
-    transport = RequestsHTTPTransport(url="https://api.serlo.org/graphql")
+    api_url = "https://api.serlo.org/graphql"
+    if os.getenv("USE_LOCAL_API"):
+        api_url = "http://localhost:3001/graphql"
+    transport = RequestsHTTPTransport(url=api_url)
     client = Client(transport=transport, fetch_schema_from_transport=True)
     graphql_query = gql(query)
     return client.execute(graphql_query, variable_values=params)

validate_nodes.py

@@ -34,7 +34,7 @@
     except fastjsonschema.JsonSchemaException as e:
         failures.append(
             # pylint: disable=E1101
-            f"Failed at {learning_resource['id']} . Error: {e}, instead of {e.value}"
+            f"Failed at {learning_resource['id']} Error: {e}, instead of {e.value}"
             # pylint: enable=E1101
         )