shell/platform/fuchsia/dart-pkg/zircon/test/eventpair_test.dart

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:async';

import 'package:test/test.dart';
import 'package:zircon/zircon.dart';

void main() {
  group('eventpair: ', () {
    test('create', () {
      final HandlePairResult pair = System.eventpairCreate();
      expect(pair.status, equals(ZX.OK));
      expect(pair.first.isValid, isTrue);
      expect(pair.second.isValid, isTrue);
    });

    test('duplicate', () {
      final HandlePairResult pair = System.eventpairCreate();
      expect(pair.status, equals(ZX.OK));
      expect(pair.first.isValid, isTrue);
      expect(pair.second.isValid, isTrue);

      expect(pair.first.duplicate(ZX.RIGHT_SAME_RIGHTS).isValid, isTrue);
      expect(pair.second.duplicate(ZX.RIGHT_SAME_RIGHTS).isValid, isTrue);
    });

    test('close', () {
      final HandlePairResult pair = System.eventpairCreate();
      expect(pair.first.close(), equals(0));
      expect(pair.first.isValid, isFalse);
      expect(pair.second.isValid, isTrue);

      expect(pair.second.close(), equals(0));
      expect(pair.second.isValid, isFalse);
    });

    test('async wait peer closed', () async {
      final HandlePairResult pair = System.eventpairCreate();
      final Completer<int> completer = Completer<int>();
      pair.first.asyncWait(EventPair.PEER_CLOSED, (int status, int pending) {
        completer.complete(status);
      });

      expect(completer.isCompleted, isFalse);
      pair.second.close();

      final int status = await completer.future;
      expect(status, equals(ZX.OK));
    });
  });
}