blob: 8f1e89210b23959800078ec43636f3ae0c000fdf [file] [log] [blame]
// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart = 2.7
// dart2jsOptions=--strong
library foo;
import 'package:expect/expect.dart';
import 'package:js/js.dart';
class A<T> {
external factory A();
class B<T> {}
class C implements B<int> {
external factory C();
class D<T> {}
class E implements B<String> {
external factory E();
main() {
test(new A<int>());
test(new A<String>());
test(new C());
test(new E());
test(o) {
Expect.isTrue(o is A<int>, "Expected $o to be A<int>");
Expect.isTrue(o is A<String>, "Expected $o to be A<String>");
Expect.isTrue(o is B<int>, "Expected $o to be B<int>");
Expect.isTrue(o is B<String>, "Expected $o to be B<String>");
Expect.isFalse(o is D<int>, "Expected $o not to be D<int>");