blob: c5b1e35558d2b5e3d498ed9490c4e7817abbf894 [file] [log] [blame]
// 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 Future then(dynamic onValue(T value), {Function onError})
/// Register callbacks to be called when this future completes.
/// When this future completes with a value, the onValue callback will be
/// called with that value. If this future is already completed, the callback
/// will not be called immediately, but will be scheduled in a later microtask.
/// . . .
/// Returns a new Future which is completed with the result of the call to
/// onValue (if this future completes with a value) or to onError (if this
/// future completes with an error).
/// @description Checks that if this future is already completed, then the
/// invocation of onValue is delayed until the next event-loop iteration.
/// @author kaigorodov
import "dart:async";
import "../../../Utils/expect.dart";
void check(Future f) {
bool visited = false;
f.then((fValue) {
visited = true;
Expect.equals(1, fValue);
main() {
Completer completer = new Completer();
Future f = completer.future;
f = new Future.value(1);