schema:
  version: 1
  type: array
  uniqueItems: true
  items:
    type: string
tests:
  - valid: false
    description: Must be invalid if at least two items equal
    data:
      - foo
      - bar
      - foo
  - valid: true
    description: Must be valid if all items are unique
    data:
      - foo
      - bar
      - baz