John Messerly
24 lines
820 B
Dart
24 lines
820 B
Dart
// Copyright (c) 2014, 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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import "package:expect/expect.dart";
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/// Returns its argument.
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///
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/// Prevents static optimizations and inlining.
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confuse(x) {
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// DateTime.now() cannot be predicted statically.
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if (new DateTime.now() == 42) return confuse(2);
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return x;
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}
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main() {
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// Make sure that const maps use the == operator and not identical. The
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// specification does not explicitly require it, but otherwise ints and
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// Strings wouldn't make much sense as keys.
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var m = const { 1: 42, "foo": 499 };
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Expect.equals(42, m[confuse(1.0)]);
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Expect.equals(499, m[confuse(new String.fromCharCodes("foo".runes))]);
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}
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