Private Methods: To Test or Not To Test?
Some say that you should only test your public API. I disagree officially in this blog post that shows pros and cons of testing private methods, too. I’d love to hear your opinions!
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I left a comment on your blog, but here’s my take on the topic: http://blog.rubybestpractices.com/posts/gregory/034-issue-5-testing-antipatterns.html
Basically, I think your argument is that you should test the non-trivial private API of your code (i.e. its internals / developer API). I agree with that, but I disagree that your internal API should be marking its methods as private. Details in the article linked above.
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