Language/Expressions/Await_Expressions/value_t02.dart

/*
 * Copyright (c) 2015, 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 if e evaluates to an object o that is not an instance of Future,
 * then let f be the result of calling Future.value() with o as its argument;
 * otherwise let f be the result of evaluating e.
 *    Next, execution of the function m immediately enclosing a is suspended
 * until after f completes. The stream associated with the innermost enclosing
 * asynchronous for loop, if any, is paused. At some time after f is completed,
 * control returns to the current invocation. The stream associated with the
 * innermost enclosing asynchronous for loop , if any, is resumed. If f has
 * completed with an exception x, a raises x. If f completes with a value v,
 * a evaluates to v.
 *
 * @description Check that if e evaluates to an object o that is not an
 * instance of Future, then await expression value equals to o.
 *
 * @author a.semenov@unipro.ru
 */
import '../../../Utils/expect.dart';

f1() {
  return 100500;
}

test() async {
  int x = 10;

  Expect.equals(11, await ++x);
  Expect.equals('hello, world', await ('hello,' + ' world'));
  Expect.equals(100500, await f1());
  Expect.equals(100000, await (f1() - 500));
}

main() {
  asyncStart();
  test().then( (value) => asyncEnd() );
}