GraphQL\Tests\Validator\KnownTypeNamesTest::testKnownTypeNamesAreValid PHP Method

    public function testKnownTypeNamesAreValid()
    {
        $this->expectPassesRule(new KnownTypeNames(), '
      query Foo($var: String, $required: [String!]!) {
        user(id: 4) {
          pets { ... on Pet { name }, ...PetFields }
        }
      }
      fragment PetFields on Pet {
        name
      }
        ');
    }