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05ca544f15
Change-Id: Iaa0ca2b4f2d1b15f79ddca37834d3ed2497bc068 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149242 Commit-Queue: Joshua Litt <joshualitt@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
39 lines
925 B
Dart
39 lines
925 B
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.7
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import "package:expect/expect.dart";
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class A {}
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class B extends A {}
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main() {
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var a = new A();
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var b = new B();
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Expect.isTrue(a is A);
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Expect.isTrue(a is Object);
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Expect.isTrue(!(a is B));
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Expect.isTrue(b is A);
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Expect.isTrue(b is Object);
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Expect.isTrue(b is B);
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Expect.equals("true", (a is A).toString());
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Expect.equals("true", (a is Object).toString());
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Expect.equals("false", (a is B).toString());
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Expect.equals("true", (b is A).toString());
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Expect.equals("true", (b is Object).toString());
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Expect.equals("true", (b is B).toString());
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var c = new A();
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Expect.isTrue(c is Object);
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c = new A();
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Expect.equals("true", (c is Object).toString());
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}
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