LibTest/async/Completer/complete_A01_t04.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.

// @dart = 2.9

/// @assertion void complete([T value])
/// Completes future with the supplied values.
/// The value must be either a value of type T or a future of type Future<T>.
/// If the value is itself a future, the completer will wait for that future to
/// complete, and complete with the same result, whether it is a success or an
/// error.
/// All listeners on the future are informed about the value.
/// @description Checks that all listeners on the future are informed.
/// @author kaigorodov


import "dart:async";
import "../../../Utils/expect.dart";

int N = 10;
const v = 99;
List<Future<dynamic>> futures = [];
int count = 0;

main() {
  var completer = new Completer();
  var future = completer.future;

  for (int k = 0; k < N; k++) {
    asyncStart();
    futures.add(future.then((fValue) {
      Expect.equals(v, fValue);
      ++count;
      asyncEnd();
    }));
  }
  Future.wait(futures).whenComplete(() => Expect.equals(N, count));

  completer.complete(v);
}