Robert Nystrom
24b33dae89
Change-Id: I90bc5ff6aae8998deb3cc28b1134c60058706f01 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150185 Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com>
120 lines
3.2 KiB
Dart
120 lines
3.2 KiB
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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// Dart test program for testing if statement.
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import "package:expect/expect.dart";
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// For logical-or conditions dart2js sometimes inlined expressions, leading to
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// completely broken programs.
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int globalCounter = 0;
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falseWithSideEffect() {
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bool confuse() => new DateTime.now().millisecondsSinceEpoch == 42;
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var result = confuse();
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// Make it harder to inline.
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if (result) {
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try {
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try {
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if (confuse()) falseWithSideEffect();
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if (confuse()) return 499;
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} catch (e) {
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rethrow;
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}
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} catch (e) {
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rethrow;
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}
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}
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globalCounter++;
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return result;
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}
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falseWithoutSideEffect() {
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bool confuse() => new DateTime.now().millisecondsSinceEpoch == 42;
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var result = confuse();
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// Make it harder to inline.
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if (result) {
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try {
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try {
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if (confuse()) falseWithSideEffect();
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if (confuse()) return 499;
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} catch (e) {
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rethrow;
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}
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} catch (e) {
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rethrow;
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}
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}
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return result;
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}
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testLogicalOr() {
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globalCounter = 0;
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bool cond1 = falseWithSideEffect();
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if (cond1 || falseWithoutSideEffect()) Expect.fail("must be false");
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if (cond1 || falseWithoutSideEffect()) Expect.fail("must be false");
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if (cond1 || falseWithoutSideEffect()) Expect.fail("must be false");
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Expect.equals(1, globalCounter);
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cond1 = (falseWithSideEffect() == 499);
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if (cond1 || falseWithoutSideEffect()) Expect.fail("must be false");
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if (cond1 || falseWithoutSideEffect()) Expect.fail("must be false");
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if (cond1 || falseWithoutSideEffect()) Expect.fail("must be false");
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Expect.equals(2, globalCounter);
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}
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List globalList = [];
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void testLogicalOr2() {
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globalList.clear();
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testValueOr([]);
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testValueOr(null);
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Expect.listEquals([1, 2, 3], globalList);
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}
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void testValueOr(List? list) {
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if (list == null) globalList.add(1);
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if (list == null || list.contains("2")) globalList.add(2);
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if (list == null || list.contains("3")) globalList.add(3);
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}
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testLogicalAnd() {
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globalCounter = 0;
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bool cond1 = falseWithSideEffect();
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if (cond1 && falseWithoutSideEffect()) Expect.fail("must be false");
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if (cond1 && falseWithoutSideEffect()) Expect.fail("must be false");
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if (cond1 && falseWithoutSideEffect()) Expect.fail("must be false");
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Expect.equals(1, globalCounter);
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cond1 = (falseWithSideEffect() == 499);
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if (cond1 && falseWithoutSideEffect()) Expect.fail("must be false");
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if (cond1 && falseWithoutSideEffect()) Expect.fail("must be false");
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if (cond1 && falseWithoutSideEffect()) Expect.fail("must be false");
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Expect.equals(2, globalCounter);
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}
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void testLogicalAnd2() {
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globalList.clear();
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testValueAnd([]);
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testValueAnd(null);
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Expect.listEquals([1, 2, 3], globalList);
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}
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void testValueAnd(List? list) {
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if (list == null) globalList.add(1);
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if (list == null && globalList.contains(1)) globalList.add(2);
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if (list == null && globalList.contains(1)) globalList.add(3);
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}
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main() {
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testLogicalOr();
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testLogicalOr2();
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testLogicalAnd();
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testLogicalAnd2();
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}
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