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![Robert Nystrom](/assets/img/avatar_default.png)
Change-Id: I764d0457da85b2935e1d83309eab4c4b5b3ea000 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/126204 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
98 lines
2 KiB
Dart
98 lines
2 KiB
Dart
// Copyright (c) 2011, 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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class ForInTest {
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static testMain() {
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testSimple();
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testBreak();
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testContinue();
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testClosure();
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}
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static Set<int> getSmallSet() {
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Set<int> set = new Set<int>();
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set.add(1);
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set.add(2);
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set.add(4);
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return set;
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}
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static void testSimple() {
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Set<int> set = getSmallSet();
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int count = 0;
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for (final i in set) {
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count += i;
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}
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Expect.equals(7, count);
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count = 0;
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for (var i in set) {
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count += i;
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}
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Expect.equals(7, count);
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count = 0;
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for (int i in set) {
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count += i;
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}
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Expect.equals(7, count);
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count = 0;
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for (final int i in set) {
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count += i;
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}
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Expect.equals(7, count);
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count = 0;
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int i = 0;
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Expect.equals(false, set.contains(i)); // Used to test [i] after loop.
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for (i in set) {
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count += i;
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}
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Expect.equals(7, count);
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Expect.equals(true, set.contains(i));
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// The default implementation of [Set] preserves order.
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Expect.equals(4, i);
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}
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static void testBreak() {
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Set<int> set = getSmallSet();
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int count = 0;
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for (final i in set) {
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if (i == 4) break;
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count += i;
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}
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Expect.equals(true, count < 4);
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}
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static void testContinue() {
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Set<int> set = getSmallSet();
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int count = 0;
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for (final i in set) {
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if (i < 4) continue;
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count += i;
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}
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Expect.equals(4, count);
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}
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static void testClosure() {
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Set<int> set = getSmallSet();
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List<Function> closures = [];
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int index = 0;
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for (var i in set) {
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closures.add(() => i);
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index++;
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}
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Expect.equals(index, set.length);
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Expect.equals(7, closures[0]() + closures[1]() + closures[2]());
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}
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}
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main() {
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ForInTest.testMain();
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}
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