If you’ve ever read the Go FAQ, it contain a section on testing frameworks that features some provocative language that I’ll quote verbatim below:
A related point is that testing frameworks tend to develop into mini-languages of their own, with conditionals and controls and printing mechanisms, but Go already has all those capabilities; why recreate them? We’d rather write tests in Go; it’s one fewer language to learn and the approach keeps the tests straightforward and easy to understand.