How can I mock this asynchronous method?
- by Charlie
I have a class that roughly looks like this:
public class ViewModel
{
public ViewModel(IWebService service)
{
this.WebService = service;
}
private IWebService WebService{get;set;}
private IEnumerable<SomeData> MyData{get;set;}
private void GetReferenceData()
{
this.WebService.BeginGetStaticReferenceData(GetReferenceDataOnComplete, null);
}
private void GetReferenceDataOnComplete(IAsyncResult result)
{
this.MyData = this.WebService.EndGetStaticReferenceData(result);
}
.
.
.
}
I want to mock my IWebService interface so that when BeginGetStaticReferenceData is called it is able to call the callback method. I'm using Moq and I can't work out how to do this. My unit test set up code looks something like:
//Arrange
var service = new Mock<IWebService>();
service.Setup(x => x.BeginGetStaticReferenceData(/*.......don't know.....*/));
service.Setup(x => x.EndGetStaticReferenceData(It.IsAny<IAsyncResult>())).Returns(new List<SomeData>{new SomeData{Name="blah"}});
var viewModel = new ViewModel(service.Object);
.
.
