We added `assert_not` in f75addd "to replace warty 'assert !foo'".
fa8d35b agrees that it is warty, and so do I. This custom Rubocop rule
turns the wart into a violation.
As with my last custom cop, https://github.com/rails/rails/pull/32441,
I want to make sure this looks right on code climate before pushing
another commit to autocorrect everything.
@toshimaru I just noticed
https://github.com/toshimaru/rubocop-rails/pull/26
Is there a better way to add these custom cops, or were you saying we
shouldn't have custom cops at all?