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51 lines
1.7 KiB
Dart
51 lines
1.7 KiB
Dart
// Copyright (c) 2015, 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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// Test that dart2js does not rewrite conditional into logical operators
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// in cases where it changes which falsy value is returned.
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posFalse(x, y) => x != null ? y : false;
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negFalse(x, y) => x != null ? !y : false;
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posNull(x, y) => x != null ? y : null;
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negNull(x, y) => x != null ? !y : null;
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main() {
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bool isCheckedMode = false;
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assert((isCheckedMode = true));
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Expect.equals(false, posFalse(null, false));
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Expect.equals(false, negFalse(null, false));
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Expect.equals(null, posNull(null, false));
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Expect.equals(null, negNull(null, false));
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Expect.equals(false, posFalse(null, true));
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Expect.equals(false, negFalse(null, true));
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Expect.equals(null, posNull(null, true));
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Expect.equals(null, negNull(null, true));
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Expect.equals(false, posFalse([], false));
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Expect.equals(true, negFalse([], false));
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Expect.equals(false, posNull([], false));
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Expect.equals(true, negNull([], false));
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Expect.equals(true, posFalse([], true));
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Expect.equals(false, negFalse([], true));
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Expect.equals(true, posNull([], true));
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Expect.equals(false, negNull([], true));
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if (!isCheckedMode) {
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Expect.equals(null, posFalse([], null));
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Expect.equals(true, negFalse([], null));
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Expect.equals(null, posNull([], null));
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Expect.equals(true, negNull([], null));
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var y = {};
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Expect.identical(y, posFalse([], y));
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Expect.equals(true, negFalse([], y));
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Expect.identical(y, posNull([], y));
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Expect.equals(true, negNull([], y));
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}
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}
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