Cancellation_should_occur_when_the_start_command_CancellationToken_is_signalled_on_the_next_timer_tick()
{
var command = new FakeAsyncCommand(FakeAsyncCommandBehavior.ExecuteWaitsForCancel);
var timer = new FakeDispatcherTimer();
var vm = new LongRunningProcessProgressViewModel(command, timer);
using var cancellationTokenSource = new CancellationTokenSource();
var task = vm.StartCommand.ExecuteAsync(cancellationToken: cancellationTokenSource.Token);
cancellationTokenSource.Cancel();
await timer.RaiseTickEventAsync();
await task;
command.WasCancelled.Should().BeTrue();
}
