Because Tasty is async all the way through, testing async code is pretty easy:

1. Write the async test code

There is nothing special about executing async code in Tasty. Just use async and await as you would expect with any C# application:

using System;
using System.Threading.Tasks;

using static Xenial.Tasty;

namespace AsyncTastyTests
{
    class Program
    {
        static async Task Main(string[] args)
        {
            // Mark the execution callback async
            It("I'm async and happy about it", async () =>
            {
                await Task.Delay(100); // Do async computation and await it
                return true; //We could omit that, but that's for the next lesson
            });
        }
    }
}

2. Use top level async await to run

We use the top level await feature of C# to run the tests asynchronous:

using System;
using System.Threading.Tasks;

using static Xenial.Tasty;

namespace AsyncTastyTests
{
    class Program
    {
        //Make sure we have an async main
        static async Task Main(string[] args)
        {
            It("I'm async and happy about it", async () =>
            {
                await Task.Delay(100);
                return true;
            });

            await Run(args); //await the results
        }
    }
}

3. Run the project and see the results

Let's run and look:

dotnet run

👍 [00:00:00.1213]  I'm async and happy about it

=================================================================================================
Summary:              F0 |              I0 |             NR0 |              S1 | T1
Time:    [00:00:00.0000] | [00:00:00.0000] | [00:00:00.0000] | [00:00:00.1213] | [00:00:00.1213]
Outcome:         Success
=================================================================================================

4. Congratulations

You wrote your very first async delicious test! Let's look into some more features with test groups.