Robert Nystrom
fc1b1ecc71
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Alexander Thomas <athom@google.com>
107 lines
2.8 KiB
Dart
107 lines
2.8 KiB
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 test program for testing the instanceof operation.
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import "package:expect/expect.dart";
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abstract class I {}
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abstract class AI implements I {}
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class A implements AI {
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const A();
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}
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class B implements I {
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const B();
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}
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class C extends A {
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const C() : super();
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}
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class InstanceofTest {
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static testMain() {
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var a = new A();
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var b = new B();
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var c = new C();
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var n = null;
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Expect.equals(true, a is A);
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Expect.equals(true, b is B);
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Expect.equals(true, c is C);
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Expect.equals(true, c is A);
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Expect.equals(true, a is AI);
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Expect.equals(true, a is I);
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Expect.equals(false, b is AI);
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Expect.equals(true, b is I);
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Expect.equals(true, c is AI);
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Expect.equals(true, c is I);
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Expect.equals(false, n is AI);
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Expect.equals(false, n is I);
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Expect.equals(false, a is B);
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Expect.equals(false, a is C);
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Expect.equals(false, b is A);
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Expect.equals(false, b is C);
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Expect.equals(false, c is B);
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Expect.equals(false, n is A);
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Expect.equals(false, null is A);
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Expect.equals(false, null is B);
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Expect.equals(false, null is C);
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Expect.equals(false, null is AI);
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Expect.equals(false, null is I);
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{
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var a = new List(5);
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Expect.equals(true, a is List);
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Expect.equals(true, a is List<Object>);
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Expect.equals(false, a is List<int>);
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Expect.equals(false, a is List<num>);
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Expect.equals(false, a is List<String>);
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}
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{
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var a = new List<Object>(5);
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Expect.equals(true, a is List);
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Expect.equals(true, a is List<Object>);
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Expect.equals(false, a is List<int>);
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Expect.equals(false, a is List<num>);
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Expect.equals(false, a is List<String>);
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}
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{
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var a = new List<int>(5);
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Expect.equals(true, a is List);
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Expect.equals(true, a is List<Object>);
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Expect.equals(true, a is List<int>);
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Expect.equals(true, a is List<num>);
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Expect.equals(false, a is List<String>);
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}
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{
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var a = new List<num>(5);
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Expect.equals(true, a is List);
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Expect.equals(true, a is List<Object>);
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Expect.equals(false, a is List<int>);
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Expect.equals(true, a is List<num>);
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Expect.equals(false, a is List<String>);
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}
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{
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var a = new List<String>(5);
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Expect.equals(true, a is List);
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Expect.equals(true, a is List<Object>);
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Expect.equals(false, a is List<int>);
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Expect.equals(false, a is List<num>);
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Expect.equals(true, a is List<String>);
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}
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}
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}
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main() {
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// Repeat type checks so that inlined tests can be tested as well.
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for (int i = 0; i < 5; i++) {
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InstanceofTest.testMain();
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}
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}
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