| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| // Dart test program for testing while statement. |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| class Helper { |
| static int f1(bool b) { |
| while (b) return 1; |
| |
| return 2; |
| } |
| |
| static int f2(bool b) { |
| while (b) { |
| return 1; |
| } |
| return 2; |
| } |
| |
| static int f3(int n) { |
| int i = 0; |
| while (i < n) { |
| i++; |
| } |
| return i; |
| } |
| |
| static int f4() { |
| // Verify that side effects in the condition are visible after the loop. |
| int i = 0; |
| while (++i < 3) {} |
| return i; |
| } |
| } |
| |
| class WhileTest { |
| static testMain() { |
| Expect.equals(1, Helper.f1(true)); |
| Expect.equals(2, Helper.f1(false)); |
| Expect.equals(1, Helper.f2(true)); |
| Expect.equals(2, Helper.f2(false)); |
| Expect.equals(0, Helper.f3(-2)); |
| Expect.equals(0, Helper.f3(-1)); |
| Expect.equals(0, Helper.f3(0)); |
| Expect.equals(1, Helper.f3(1)); |
| Expect.equals(2, Helper.f3(2)); |
| Expect.equals(3, Helper.f4()); |
| } |
| } |
| |
| main() { |
| WhileTest.testMain(); |
| } |