Need a way to verify that code added an event handler to an event

[hughbe]

E.g. I have the product code

IDesignerEventService service = ...;
service.ActiveDesignerChanged += handler;

I need to verify that we called +=

[stakx]

... and you're not the first. Someone will have to implement this feature or it's not going to happen...

See #49.

[stakx]

@lepijohnny is currently working on this in #857.

[stakx]

Resolved in #857. You'll be able to use Setup[Add|Remove] and Verify[Add|Remove|All] for event subscription and unsubscription from version 4.13.0 onwards. Note that you will have to use SetupAdd or SetupRemove to enable verification of event (un)subscription. These new setup methods enable the recording of such += and -= invocations. If you never call either of these setup methods, the (un)subscription calls won't get recorded and thus won't be verifiable. This is for back-compat's sake.

Thanks @lepijohnny for having taken care of this long-standing feature request. (There have been a few issues in the past asking for this same feature.)