Await a Async Void method call for unit testing

Question

I have a method that looks like this:

private async void DoStuff(long idToLookUp)
{
    IOrder order = await orderService.LookUpIdAsync(idToLookUp);   

             


        

Answer 1

I had a similar issue. In my case, the solution was to use Task.FromResult in the moq setup for .Returns(...) like so:

orderService.LookUpIdAsync(Arg.Any())
    .Returns(Task.FromResult(null));

Alternatively, Moq also has a ReturnsAysnc(...) method.