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// 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 ZoneBinaryCallback<R, T1, T2> registerBinaryCallback<R, T1, T2>(
/// R callback(T1 arg1, T2 arg2)
/// )
/// Registers the given callback in this zone.
/// @description Checks that ZoneBinaryCallback is returned and that
/// registerBinaryCallback can be overridden by ZoneSpecification.
/// @author ilya
import "dart:async";
import "../../../Utils/expect.dart";
void test(Zone z) { {
Expect.equals(z, Zone.current);
main() {
Zone z = Zone.current;
int f(int x, int y) => x + y;
ZoneBinaryCallback<int, int, int> callback =
z.registerBinaryCallback<int, int, int>(f);
Expect.isTrue(callback is ZoneBinaryCallback<int, int, int>);
Expect.equals(3, callback(1, 2));
ZoneBinaryCallback<R, T1, T2> registerFunction<R, T1, T2>(
Zone self, ZoneDelegate parent, Zone zone,R f(T1 arg1, T2 arg2)) {
return (_, __) => 42 as R;
z.fork(specification: new ZoneSpecification(
registerBinaryCallback: registerFunction))
.run(() {
ZoneBinaryCallback<int, int, int> callback =
Zone.current.registerBinaryCallback<int, int, int>(f);
Expect.isTrue(callback is ZoneBinaryCallback<int, int, int>);
Expect.equals(42, callback(1, 2));