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b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
64 lines
1.9 KiB
Dart
64 lines
1.9 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 the "is" type test operator.
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// @dart = 2.9
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import "package:expect/expect.dart";
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check(args) {
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var list = args[0];
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var string = args[1];
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var nullObject = args[2];
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Expect.isTrue(list is Object);
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Expect.isTrue(list is List);
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Expect.isTrue(list is Iterable);
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Expect.isFalse(list is Comparable);
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Expect.isFalse(list is Pattern);
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Expect.isFalse(list is String);
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Expect.isFalse(list is! List);
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Expect.isFalse(list is! Iterable);
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Expect.isTrue(list is! Comparable);
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Expect.isTrue(list is! Pattern);
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Expect.isTrue(list is! String);
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Expect.isTrue(string is Object);
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Expect.isFalse(string is List);
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Expect.isFalse(string is Iterable);
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Expect.isTrue(string is Comparable);
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Expect.isTrue(string is Pattern);
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Expect.isTrue(string is String);
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Expect.isTrue(string is! List);
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Expect.isTrue(string is! Iterable);
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Expect.isFalse(string is! Comparable);
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Expect.isFalse(string is! Pattern);
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Expect.isFalse(string is! String);
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Expect.isTrue(nullObject is Object);
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Expect.isFalse(nullObject is List);
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Expect.isFalse(nullObject is Iterable);
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Expect.isFalse(nullObject is Comparable);
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Expect.isFalse(nullObject is Pattern);
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Expect.isFalse(nullObject is String);
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Expect.isTrue(nullObject is! List);
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Expect.isTrue(nullObject is! Iterable);
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Expect.isTrue(nullObject is! Comparable);
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Expect.isTrue(nullObject is! Pattern);
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Expect.isTrue(nullObject is! String);
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}
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main() {
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// Try to make it hard for an optimizing compiler to inline the
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// tests.
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check([[], 'string', null]);
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// Try to make it even harder.
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var string = new String.fromCharCodes([new DateTime.now().year % 100 + 1]);
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check([string.codeUnits, string, null]);
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}
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