public function testInterfaceIntoNonOverlappingUnion()
{
$this->expectFailsRule(new PossibleFragmentSpreads(), '
fragment invalidInterfaceWithinUnion on HumanOrAlien { ...petFragment }
fragment petFragment on Pet { name }
', [$this->error('petFragment', 'HumanOrAlien', 'Pet', 2, 62)]);
}