How can I test async methods in my ViewModels?

How can I test async methods in my ViewModels?

You can use a testing framework like NUnit or xUnit along with Moq to test async methods in your ViewModels.

Can you give me a code example?

Sure! Here's a simple example:

[Test]
public async Task TestAsyncMethod()
{
    var viewModel = new MyViewModel();
    await viewModel.LoadDataAsync();
    Assert.IsNotNull(viewModel.Data);
}

What if I need to mock an async service call?

You can use Moq to set up your service mock. For example:

var mockService = new Mock<IMyService>();
mockService.Setup(s => s.GetDataAsync()).ReturnsAsync(new List<Data>());

Are there any best practices for testing async methods?

Yes, always ensure your tests are asynchronous, use async and await, and avoid blocking calls like .Result.