- name: unique variable names
  rule: UniqueVariableNames
  schema: 0
  query: |2-
          
          query A($x: Int, $y: String) { __typename }
          query B($x: String, $y: Int) { __typename }
          
  errors: []
- name: duplicate variable names
  rule: UniqueVariableNames
  schema: 0
  query: |2-
          
          query A($x: Int, $x: Int, $x: String) { __typename }
          query B($x: String, $x: Int) { __typename }
          query C($x: Int, $x: Int) { __typename }
          
  errors:
    - message: There can be only one variable named "x".
      locations:
        - {line: 2, column: 16}
        - {line: 2, column: 25}
    - message: There can be only one variable named "x".
      locations:
        - {line: 2, column: 16}
        - {line: 2, column: 34}
    - message: There can be only one variable named "x".
      locations:
        - {line: 3, column: 16}
        - {line: 3, column: 28}
    - message: There can be only one variable named "x".
      locations:
        - {line: 4, column: 16}
        - {line: 4, column: 25}