Java interface for SendGrid class

[chrylis]

As of 3.2.1, all of the SendGrid functionality is implemented directly in the SendGrid class, which is directly descended from Object and implements no interfaces. This makes mocking out SendGrid calls for testing difficult--especially the message-driven integration test "this API call actually does cause mail to be sent!" It would be preferable to have a SendGridApi or similar interface that covered at least the core methods.

I'll tag #140 here because of the theme, but this refactoring can be done without breaking anything--adding a new interface implementation won't cause problems.

[thinkingserious]

Thanks @chrylis,

I have added this to our backlog.

In the mean time, you can use the Prism mock server like so.

With Best Regards,

Elmer

[thinkingserious]

This should be implemented here