On 10/07/2014 11:53 PM, Junio C Hamano wrote:
> Jeff King <p...@peff.net> writes:
>
>> On Tue, Oct 07, 2014 at 01:35:15PM -0700, Junio C Hamano wrote:
>>
>>> Yeah, if we are going to reduce it down to the above implementation,
>>> intereseting things like "test -f $frotz" will become possible and
>>> "cmp-str" stops making sense. It really is about "We run test and
>>> expect it to yield true. Report the failure a bit more prominently
>>> under the '-v' option to help us debug".
>>
>> We already have test_path_is_file to do the same thing just for "-f". We
>> could in theory switch all of those to this new, more generic wrapper. I
>> don't know if it is worth doing a mass-conversion, but we could
>> discourage test_path_is_file in new tests. We could also implement
>> test_path_is_{dir,file} on top of this.
>
> Oh, I wasn't going in that direction when I mentioned "-f"; I just
> wanted to say that 'test "$@"' is clearly about 'test' (/bin/test or
> shell built-in) and less about 'compare string'. I do not think it
> is necessarily a good direction to go in to replace test-path-is-file
> with the test_cond thing; after all, type specific tests have chance
> to report breakage of expectation in type specifc ways, e.g.
>
> test_path_is_file () {
> test -f "$1" && return 0
> echo >&2 "expected '$1' to be file"
> if test -e "$1"
> then
> echo >&2 "but it is missing"
> else
> echo >&2 "but it is a non-file"
> ls >&2 -ld "$1"
> fi
> return 1
> }
>
> But that is also just in theory ;-).
>
>>> So among the ones you listed, test_verbose may be the least silly, I
>>> would think.
>>
>> Somehow test_verbose seems to me like checking the "verbose" option of
>> the test suite. I prefer "test_cond", but I do not feel too strongly, if
>> you want to override me.
>
> Hmph, your 'test' in that name is a generic verb "we check that...",
> which I think aligns better with the other test_foo functions. When
> I suggested 'test_verbose', 'test' in that name was specifically
> meant to refer to the 'test' command.
>
> Still "test_cond" feels somewhat funny, as "we check that..." always
> validates some condition, but I don't think of anything better X-<.
I like "verbose_test $foo = $bar" because it puts the word "test" next
to the condition, where the built-in command "test" would otherwise be.
We could even define a command
verbose () {
"$@" && return 0
echo >&2 "command failed: $*"
return 1
}
and use it like
verbose test $foo = $bar
Somehow I feel like I'm reinventing something that must already exist...
Michael
--
Michael Haggerty
mhag...@alum.mit.edu
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