Re: [PATCH 3/4] t: rev-parse-parents: avoid yoda conditions

> On Mon, Sep 02, 2013 at 01:30:38AM -0500, Felipe Contreras wrote:
> 
> > Just as 5 == X is weird, so is comparing first the expected value, and
> > then the value we are testing. So switch them around.
> 
> Actually, our normal comparison order for test output is "test_cmp
> expect actual", as it shows a test failure as a diff with the expected
> output as the base (i.e., the diff shows what went wrong).
> 
> That reasoning does not apply to "test a = b", which shows no output at
> all. However, if you want to clean up and modernize these tests, it
> would probably be better to simply convert them to use test_cmp.
> 
> I wonder if we should have a:
> 
>   test_cmp_args () {
>           echo "$1" >expect &&
>           echo "$1" >actual &&
>           test_cmp expect actual
>   }
> 
> to let these remain one-liners like:
> 
>   test_cmp_args "$(git rev-parse start)" "$(git rev-parse final^1^1^1)"