- name: valid subscription
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription ImportantEmails {
            importantEmails
          }

  errors: []
- name: valid subscription with fragment
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription sub {
            ...newMessageFields
          }
          
          fragment newMessageFields on SubscriptionRoot {
            newMessage {
              body
              sender
            }
          }

  errors: []
- name: valid subscription with fragment and field
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription sub {
            newMessage {
              body
            }
            ...newMessageFields
          }
          
          fragment newMessageFields on SubscriptionRoot {
            newMessage {
              body
              sender
            }
          }

  errors: []
- name: fails with more than one root field
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription ImportantEmails {
            importantEmails
            notImportantEmails
          }

  errors:
    - message: Subscription "ImportantEmails" must select only one top level field.
      locations:
        - {line: 4, column: 9}
- name: fails with more than one root field including introspection
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription ImportantEmails {
            importantEmails
            __typename
          }

  errors:
    - message: Subscription "ImportantEmails" must select only one top level field.
      locations:
        - {line: 4, column: 9}
    - message: Subscription "ImportantEmails" must not select an introspection top level field.
      locations:
        - {line: 4, column: 9}
- name: fails with more than one root field including aliased introspection via fragment
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription ImportantEmails {
            importantEmails
            ...Introspection
          }
          fragment Introspection on SubscriptionRoot {
            typename: __typename
          }

  errors:
    - message: Subscription "ImportantEmails" must select only one top level field.
      locations:
        - {line: 7, column: 9}
    - message: Subscription "ImportantEmails" must not select an introspection top level field.
      locations:
        - {line: 7, column: 9}
- name: fails with many more than one root field
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription ImportantEmails {
            importantEmails
            notImportantEmails
            spamEmails
          }

  errors:
    - message: Subscription "ImportantEmails" must select only one top level field.
      locations:
        - {line: 4, column: 9}
        - {line: 5, column: 9}
- name: fails with many more than one root field via fragments
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription ImportantEmails {
            importantEmails
            ... {
              more: moreImportantEmails
            }
            ...NotImportantEmails
          }
          fragment NotImportantEmails on SubscriptionRoot {
            notImportantEmails
            deleted: deletedEmails
            ...SpamEmails
          }
          fragment SpamEmails on SubscriptionRoot {
            spamEmails
          }

  errors:
    - message: Subscription "ImportantEmails" must select only one top level field.
      locations:
        - {line: 5, column: 11}
        - {line: 10, column: 9}
        - {line: 11, column: 9}
        - {line: 15, column: 9}
- name: does not infinite loop on recursive fragments
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription NoInfiniteLoop {
            ...A
          }
          fragment A on SubscriptionRoot {
            ...A
          }

  errors: []
- name: fails with many more than one root field via fragments (anonymous)
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription {
            importantEmails
            ... {
              more: moreImportantEmails
              ...NotImportantEmails
            }
            ...NotImportantEmails
          }
          fragment NotImportantEmails on SubscriptionRoot {
            notImportantEmails
            deleted: deletedEmails
            ... {
              ... {
                archivedEmails
              }
            }
            ...SpamEmails
          }
          fragment SpamEmails on SubscriptionRoot {
            spamEmails
            ...NonExistentFragment
          }

  errors:
    - message: Anonymous Subscription must select only one top level field.
      locations:
        - {line: 5, column: 11}
        - {line: 11, column: 9}
        - {line: 12, column: 9}
        - {line: 15, column: 13}
        - {line: 21, column: 9}
- name: fails with more than one root field in anonymous subscriptions
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription {
            importantEmails
            notImportantEmails
          }

  errors:
    - message: Anonymous Subscription must select only one top level field.
      locations:
        - {line: 4, column: 9}
- name: fails with introspection field
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription ImportantEmails {
            __typename
          }

  errors:
    - message: Subscription "ImportantEmails" must not select an introspection top level field.
      locations:
        - {line: 3, column: 9}
- name: fails with introspection field in anonymous subscription
  rule: SingleFieldSubscriptions
  schema: 15
  query: |2-

          subscription {
            __typename
          }

  errors:
    - message: Anonymous Subscription must not select an introspection top level field.
      locations:
        - {line: 3, column: 9}
- name: skips if not subscription type
  rule: SingleFieldSubscriptions
  schema: 16
  query: |2-

            subscription {
              __typename
            }

  errors: []