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Verifying Event Handler Add was not called

0 votes
If I have the following block of code: 

AuthenticationSection authentication = (AuthenticationSection)ConfigurationManager.GetSection("system.web/authentication");
if (authentication.Mode == AuthenticationMode.None)
{
    context.AuthenticateRequest += Application_AuthenticateRequest;
}


And I want to verify that AuthenticateRequest did not have an event handler assigned to it how would I do that under the new API? My best guess doesn't seem to work: 

// Arrange
AuthenticationModule target = new AuthenticationModule();

var context = Isolate.Fake.Instance<HttpApplication>();
var authenticationSection = Isolate.Fake.Instance<AuthenticationSection>();
Isolate.WhenCalled(() => authenticationSection.Mode).WillReturn(AuthenticationMode.Forms);

// Act
target.Init(context);

// Assert
Isolate.Verify.WasNotCalled(() => context.AuthenticateRequest);


Thanks,
Colin[/code]
asked by colinbo
Report User
 (1.8k points)

1 Answer

0 votes
Hi Colin,

Verification of event subscription can be done using the non-public API. The verification is done against the add method of the event.

For example: 
public class ClassWithEvent
{
    public event EventHandler SomeEvent;
}

[TestMethod, Isolated]
public void VerifyEventWasNotSubscribed()
{
    var eventClass = Isolate.Fake.Instance<ClassWithEvent>();

     // The next line will break the test
     //eventClass.SomeEvent += (sender, args) => { };

    Isolate.Verify.NonPublic.WasNotCalled(eventClass, "add_SomeEvent");
    
}


Please let me know if it helps.

Best Regards,
Elisha
Typemock Support Team
answered by Elisha
Report User
 (12k points)
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