-
  id: 1
  issue_id: 1
  label_id: 1

-
  id: 2
  issue_id: 5
  label_id: 2

-
  id: 3
  issue_id: 2
  label_id: 1

-
  id: 4
  issue_id: 2
  label_id: 4

# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly