- description: Insert a value into the table.
  url: /v1/graphql
  status: 200
  response:
    data:
      insert_author_one:
        name: "Rick Astley"
  query:
   query: |
     mutation {
       insert_author_one(object: {id: 1, name: "Rick Astley"}) {
         name
       }
     }

- description: Send one valid mutation followed by an erroneous one.
  url: /v1/graphql
  status: 200
  response:
    data:
    errors:
      - extensions:
          path: $.selectionSet.insert_author_one.args.object
          code: constraint-violation
        message: Uniqueness violation. duplicate key value violates unique constraint
          "author_pkey"
  query:
   query: |
     mutation {
       insert_author(objects: {id: 2, name: "Eduard Anatolyevich Khil"}) {
         returning {
           name
         }
       }
       insert_author_one(object: {id: 1, name: "Rick Astley"}) {
         name
       }
     }

- description: Check that the first mutation was reverted.
  url: /v1/graphql
  status: 200
  response:
    data:
      author:
        - name: "Rick Astley"
  query:
   query: |
     query {
       author {
         name
       }
     }