- name: string - matches
  document:
    title: King
  query:
    title:
      $regex: K..g
  matches: true

- name: string - does not match
  document:
    title: Queen
  query:
    title:
      $regex: K..g
  matches: false

- name: native regexp - matches
  document:
    title: King
  query:
    title:
      $regex: !ruby/regexp /K..g/
  matches: true

- name: native regexp - does not match
  document:
    title: Queen
  query:
    title:
      $regex: !ruby/regexp /K..g/
  matches: false

- name: bson regexp - matches
  document:
    title: King
  query:
    title:
      $regex: !ruby/object:BSON::Regexp::Raw
        pattern: K..g
        options: ''
  matches: true

- name: bson regexp - does not match
  document:
    title: Queen
  query:
    title:
      $regex: !ruby/object:BSON::Regexp::Raw
        pattern: K..g
        options: ''
  matches: false

- name: string argument - matches
  document:
    title: King
  query:
    title:
      $regex:
        K..g
  matches: true

- name: string argument - does not match
  document:
    title: King
  query:
    title:
      $regex:
        K...g
  matches: false

- name: nil argument
  document:
    position: ceo
  query:
    position:
      $regex: ~
  error: true

- name: empty array argument
  document:
    position: ceo
  query:
    position:
      $regex: []
  error: true

- name: empty hash argument
  document:
    position: ceo
  query:
    position:
      $regex: {}
  error: true

- name: numeric argument
  document:
    position: ceo
  query:
    position:
      $regex: 42
  error: true

- name: numeric field value - matches if stringified
  document:
    title: 42
  query:
    title:
      $regex:
        '42'
  matches: false

- name: array field value - matches an element
  document:
    title:
      - foo
  query:
    title:
      $regex: foo
  matches: true

- name: array field value - does not match an element
  document:
    title:
      - foo
  query:
    title:
      $regex: bar
  matches: false

- name: empty array field value
  document:
    title: []
  query:
    title:
      $regex: bar
  matches: false

- name: true field value
  document:
    title: true
  query:
    title:
      $regex:
        'true'
  matches: false

- name: false field value
  document:
    title: false
  query:
    title:
      $regex:
        'false'
  matches: false

- name: nil field value
  document:
    title: ~
  query:
    title:
      $regex:
        ''
  matches: false

- name: range
  document:
    name: 42
  query:
    name:
      $regex: !ruby/range
        begin: 1
        end: 2
        excl: false
  error: true