test(backups): test dummy service compliance

tests/test_graphql/test_api_backup.py

@@ -1,6 +1,8 @@
 from tests.test_graphql.test_backup import dummy_service, backups, raw_dummy_service
 from tests.common import generate_backup_query
 
+
+from selfprivacy_api.graphql.common_types.service import service_to_graphql_service
 from selfprivacy_api.jobs import Jobs, JobStatus
 
 API_SNAPSHOTS_QUERY = """
@@ -62,6 +64,11 @@ def api_snapshots(authorized_client):
     return result
 
 
+def test_dummy_service_convertible_to_gql(dummy_service):
+    gql_service = service_to_graphql_service(dummy_service)
+    assert gql_service is not None
+
+
 def test_snapshots_empty(authorized_client, dummy_service):
     snaps = api_snapshots(authorized_client)
     assert snaps == []