blob: bc18d7b957c955bbf8b1fe85e71be42e0de2a0ec [file] [log] [blame]
// Copyright (c) 2012, 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.
import "package:expect/expect.dart";
class A {}
class B extends A {}
main() {
var a = new A();
var b = new B();
Expect.isTrue(a is A);
Expect.isTrue(a is Object);
Expect.isTrue(!(a is B));
Expect.isTrue(b is A);
Expect.isTrue(b is Object);
Expect.isTrue(b is B);
Expect.equals("true", (a is A).toString());
Expect.equals("true", (a is Object).toString());
Expect.equals("false", (a is B).toString());
Expect.equals("true", (b is A).toString());
Expect.equals("true", (b is Object).toString());
Expect.equals("true", (b is B).toString());
var c = new A();
Expect.isTrue(c is Object);
c = new A();
Expect.equals("true", (c is Object).toString());
}