title: xUnit Assert.All() async
body: <p>I have this example test using <a href="https://www.nuget.org/packages/xunit/2.2.0-beta2-build3300" rel="noreferrer">xUnit</a>:</p>
  
  <pre><code>    [Fact]
      public void SomeTest()
      {
          Assert.All(itemList, async item=&gt;
                  {
                      var i = await Something(item);
                      Assert.Equal(item,i);
                  });
      }
  </code></pre>
  
  <p>Is there a good solution to make the whole test async/awaitable?</p>