rails/rails — pull request #7781 by morgoth (2012-09-28 19:36:59+00:00)
Title: Added refute_difference method as alias for assert_no_difference

Since we can use minitest in Rails, why not to follow convention of `refute` methods?

Let me know if you like it and I can add `refute_blank` as alias for `assert_present` and `refute_present` as alias for `assert_blank` also.