public async Task InvokeAsync_BaseEventArgsWithFaultedBackgroundTasks_ShouldCompleteFaulted()
{
// Arrange.
var error = new Exception();
BaseEvent += (sender, e) => e.RegisterBackgroundTask(Task.CompletedTask);
BaseEvent += (sender, e) => e.RegisterBackgroundTask(async cancellationToken =>
{
await Task.Yield();
cancellationToken.ThrowIfCancellationRequested();
});
BaseEvent += (sender, e) => e.RegisterBackgroundTask(async cancellationToken =>
{
await Task.Yield();
throw error;
});
using (var cancellationSource = new CancellationTokenSource())
{
cancellationSource.Cancel();
// Act.
var args = new AsyncEventArgs(cancellationSource.Token);
var thrown = await Assert.ThrowsAsync <Exception>(() => BaseEvent.InvokeAsync(this, args));
// Assert.
Assert.Equal(error, thrown);
}
}
public async Task InvokeAsync_BaseEventArgsWithSucceededBackgroundTasks_ShouldCompleteSucceeded()
{
// Arrange.
BaseEvent += (sender, e) => e.RegisterBackgroundTask(Task.CompletedTask);
// Act.
var args = new AsyncEventArgs(CancellationToken.None);
await BaseEvent.InvokeAsync(this, args);
}
public void InvokeAsync_BaseEventArgsWithNoSubscribers_ShouldReturnCompletedTask()
{
var task = BaseEvent.InvokeAsync(this, new AsyncEventArgs(CancellationToken.None));
Assert.Same(Task.CompletedTask, task);
}
