schema:
  properties:
    - required:
        properties:
          - name:
              type: string
          - age:
              type: integer?
    - optional:
        type: object?
        properties:
          - name:
              type: string
          - age:
              type: integer?
tests:
  - valid: true
    description: Must be valid if all required properties are provided and are of correct type
    data:
      required:
        name: foo
      optional:
        name: bar
  - valid: true
    description: Must be valid if optional object is omitted
    data:
      required:
        name: foo
  - valid: true
    description: Must be valid if all properties are provided and are of correct type
    data:
      required:
        name: foo
        age: 10
      optional:
        name: bar
        age: 11
  - valid: false
    description: Must be invalid if optional object is provided, but does not contain required properties
    data:
      required:
        name: foo
        age: 10
      optional: {}
  - valid: true
    description: Must be valid if optional object is provided and only required properties are provided
    data:
      required:
        name: foo
        age: 10
      optional:
        name: bar