blob: 97b6dbf6f7595d86fcc03c5bee26a70b8b22cd41 [file] [log] [blame]
// Copyright (c) 2011, 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.
/// @assertion A class may implement a number of interfaces by declaring them
/// in its implements clause.
/// @description Checks that class can implement one or more interfaces.
/// @author kaigorodov
import "../../Utils/expect.dart";
class I1 {}
class I2 {}
class I3 {}
class A {}
class B implements I1 {}
class C implements I1, I2 {}
class D extends A implements I1, I2, I3 {}
main() {
A a = new A();
B b = new B();
C c = new C();
D d = new D();
Expect.isTrue(b is I1);
Expect.isTrue(c is I1);
Expect.isTrue(c is I2);
Expect.isTrue(d is I1);
Expect.isTrue(d is I2);
Expect.isTrue(d is I3);