public function testInvalidInterfacesSimpleType()
{
$schema = new Schema(['query' => new ObjectType(['name' => 'RootQuery', 'fields' => ['user' => new ObjectType(['name' => 'User', 'fields' => ['name' => new IntType()], 'interfaces' => [new TestInterfaceType()]])]])]);
$validator = new SchemaValidator();
$validator->validate($schema);
}