Pass context to TestOnBorrow

[dcormier]

I like to add tracing to my code. This depends on being able to pass a context around. To that end, I wish TestOnBorrow was passed the context that's passed to GetContext. Perhaps this would require a new function so it's not a breaking change: TestOnBorrowContext, or something similar.

[stevenh]

Indeed this would require a new method.

[dcormier]

Uh, so, was a new method added? The PR was closed without merging, resulting in this issue being closed. And I don't have permissions to reopen the issue.

[stevenh]

Yes you can see the comments on the #442

[stevenh]

@dcormier just flagging this was reopened in case you didn't see the notification.

Also mentioning that I'm thinking of a v2 which would help clean up the existing interfaces, so would be interested in peoples feedback on use cases like this we should consider when designing that.