From: Ryan Davis <ryand-ruby@...>
Date: 2010-09-01T18:12:49+09:00
Subject: Re: why no assert_not?


On Sep 1, 2010, at 01:19 , Martin DeMello wrote:

> Test::Unit could use a built-in antonym of assert, that succeeds if
> its argument is either false or nil.

this is why minitest has refute, which means it is available in ruby 1.9:

> ./ruby19 -Ilib -rtest/unit -e 'class X < Test::Unit::TestCase; def test_x; refute true; end;end'
> Test run options: --seed 53548
> 
> Loaded suite -e
> Started
> F
> Finished in 0.000635 seconds.
> 
>   1) Failure:
> test_x(X) [-e:1]:
> Failed refutation, no message given
> 
> 1 tests, 1 assertions, 1 failures, 0 errors, 0 skips
> 
> Test run options: --seed 53548