GraphQL\Tests\Validator\NoUnusedVariablesTest::testVariableNotUsed PHP Method

    public function testVariableNotUsed()
    {
        $this->expectFailsRule(new NoUnusedVariables(), '
      query ($a: String, $b: String, $c: String) {
        field(a: $a, b: $b)
      }
        ', [$this->unusedVar('c', null, 2, 38)]);
    }