C# (CSharp) hello.busyindicator BusyViewModel.Cancel Examples

Example #1

File: BusyViewModel_Should.cs Project: bing2514/hello.busyindicator

        public void Support_Cancelation()
        {
            var events = Substitute.For<IEventAggregator>();
            var sut = new BusyViewModel(events);

            const string taskName = nameof(Support_Cancelation);
            var msg = new StartTaskMessage((c, p) => Enumerable.Range(1, 10).ToList().ForEach(i =>
            {
                Thread.Sleep(10);
                p.Report(i * 10);
                c.ThrowIfCancellationRequested();
            }), taskName);

            var task = sut.Handle(msg);

            sut.IsBusy.Should().BeTrue();
            sut.WaitingFor.Should().Be($"Waiting for '{taskName}'...");

            sut.Cancel();

            sut.WaitingFor.Should().Be($"Cancelling '{taskName}'...");
            sut.IsIndeterminate.Should().BeTrue();
            sut.IsBusy.Should().BeTrue();

            // ReSharper disable once MethodSupportsCancellation
            task.Wait();

            sut.IsBusy.Should().BeFalse();
            events.Received().PublishOnUIThread(TaskState.Canceled);
        }