Language/13_Statements/07_While_A02_t01.dart

/*
 * 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.
 */
/**
 * @assertion The expression e is evaluated to an object o. Then, o is
 * subjected to boolean conversion, producing an object r.
 * If r is true, then the statement {s} is executed and then the while
 * statement is re-executed recursively.
 * If r is false, execution of the while statement is complete.
 * @description Checks that the number of iterations is correct for various valid expressions.
 * @author vasya
 * @reviewer rodionov
 * @reviewer iefremov
 */
import "../../Utils/expect.dart";

main() {
  var count = 0;
  while (false) {
    ++count;
  }
  Expect.equals(0, count);

  count = 0;
  while (true) {
    ++count;
    if (count == 7)
      break;
  }
  Expect.equals(7, count);
  
  count = 0;
  while (count < 2) {
    ++count;
  }
  Expect.equals(2, count);
  
  count = 0;
  var it = [0,1].iterator;
  while (it.moveNext()) {
//    it.current;
    ++count;
  }
  Expect.equals(2, count);
  
  count = 0;
  while (++count < 3) {  }
  Expect.equals(3, count);
}