Language/Statements/While/execution_t02.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 Execution of a while statement of the form while (e) s; proceeds
 * as follows:
 *   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 dynamic type error is produced in checked mode
 * if o is null.
 * @author vasya
 * @reviewer rodionov
 * @reviewer iefremov
 */
import '../../../Utils/expect.dart';

main() {
  try {
    while (null) {
      break;
    }
    Expect.fail("AssertionError is expected");
  } on AssertionError {
    // ok
  }
}