'await' works, but calling task.Result hangs/deadlocks

Question

I have the following four tests and the last one hangs when I run it. Why does this happen:

[Test]
public void CheckOnceResultTest()
{
    Assert.IsTrue(Check         


        

Answer 1

You can avoid deadlock adding ConfigureAwait(false) to this line:

IRestResponse response = await restResponse;

=>

IRestResponse response = await restResponse.ConfigureAwait(false);

I've described this pitfall in my blog post Pitfalls of async/await