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Faking properties and method calls using Isolate.WhenCalled
I need to fake WebClient instances and DownloadStringCompletedEventArgs instances this is in order to simulate calls to property such as DownloadStringCompletedEventArgs.Error & DownloadStringCompletedEventArgs.Result

var fakeWebClient = Isolate.Fake.Instance<WebClient>();

var fakeDownloadStringCompletedEventArgs = Isolate.Fake.Instance<DownloadStringCompletedEventArgs>();



Isolate.WhenCalled(() => fakeDownloadStringCompletedEventArgs.Error).WillReturn(null);

Isolate.WhenCalled(() => fakeDownloadStringCompletedEventArgs.Result).WillReturn("some string response");

But as you might guess or know this won't let the test run already. I guess the reason is because now I am referencing System.Core for silverlight! Do you have any workaround for this?

I posted this issue to ... adId=68931
asked by mosessaur (600 points)

1 Answer

0 votes
Unfortunately, any calls to Isolate.WhenCalled are not officially supported.
what (is( supported however is the ability to create fake instances of of unfakeable objects using the silverunit API - FYI - since silverunit is open source, you should be able to add your own API hooks to silverunit to get the "whenCalled" functionality you want, I think.
to see how, looks at the SilverUnit.MakeEventArgs() method in the source.

hope this helps,
answered by royo (2k points)