In addition: by testing a devcard you also, of course, are implicitly exercising the underlying code. So instead of writing a test for code X, you can test a d

In addition: by testing a devcard you also, of course, are implicitly exercising the underlying code. So instead of writing a test for code X, you can test a devcard using X instead, and kill two birds with one stone. Especially true if you're doing integration-testing, Selenium-style.