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>
40 lines
926 B
Dart
40 lines
926 B
Dart
// Copyright (c) 2013, 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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// Test efficient and correct implementation of !identical(a, b).
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// VMOptions=--optimization-counter-threshold=10 --no-background-compilation
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import 'package:expect/expect.dart';
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notIdenticalTest1(a) {
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if (!identical("ho", a)) {
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return 2;
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} else {
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return 1;
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}
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}
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notIdenticalTest2(a) {
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var x = identical("ho", a);
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if (!x) {
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Expect.equals(false, x);
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return x;
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} else {
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Expect.equals(true, x);
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return 1;
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}
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}
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notIdenticalTest3(a) {
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var x = identical("ho", a);
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return !x;
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}
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main() {
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for (int i = 0; i < 20; i++) {
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Expect.equals(1, notIdenticalTest1("ho"));
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Expect.equals(1, notIdenticalTest2("ho"));
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Expect.equals(false, notIdenticalTest3("ho"));
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}
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}
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