Re: [PATCH v2 1/2] format-patch: create leading components of output directory

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On Sat, Oct 05, 2019 at 10:43:51AM +0200, Bert Wesarg wrote:
> diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
> index 83f52614d3..2f2cd6fea6 100755
> --- a/t/t4014-format-patch.sh
> +++ b/t/t4014-format-patch.sh
> @@ -1606,6 +1606,26 @@ test_expect_success 'From line has expected format' '
>  	test_cmp from filtered
>  '
>  
> +test_expect_success 'format-patch -o with no leading directories' '
> +	rm -fr patches &&
> +	git format-patch -o patches master..side &&
> +	git rev-list master..side >list &&
> +	test_line_count = $(ls patches | wc -l) list

This is sort of a nit...

So, these tests check that 'git rev-list ...' lists as many commits as
the number of files created by 'git format-patch'.  While it doesn't
affect the tests' correctness, this is subtly different from checking
that 'git format-patch' created as many files as the number of commits
listed by 'git rev-list'.

Consider how the tests' output would look like on failure:
'test_line_count' shows an error message that includes the content of
the file to be checked, which in this case would consist of a bunch of
commit object ids:

  test_line_count: line count for list != 3
  f7af51d27933a90554b6e9212a7e5d4ad1c74569
  bd89fce9f5096eb5cad67c342b40818b7e3ce9e4

On one hand, these object ids won't mean much to anyone who might have
to debug such a test failure in the future, and on the other these
tests are about 'git format-patch', not about 'git rev-list'.  If the
check were written like this:

  count=$(git rev-list --count master..side) &&
  ls patches >list &&
  test_line_count = $count list

then the error message on failure would look something like this:

  test_line_count: line count for list != 3
  0001-first.patch
  0002-second.patch

which, I think, would be more useful.


> +'
> +
> +test_expect_success 'format-patch -o with leading existing directories' '
> +	git format-patch -o patches/side master..side &&
> +	git rev-list master..side >list &&
> +	test_line_count = $(ls patches/side | wc -l) list
> +'
> +
> +test_expect_success 'format-patch -o with leading non-existing directories' '
> +	rm -fr patches &&
> +	git format-patch -o patches/side master..side &&
> +	git rev-list master..side >list &&
> +	test_line_count = $(ls patches/side | wc -l) list
> +'
> +
>  test_expect_success 'format-patch format.outputDirectory option' '
>  	test_config format.outputDirectory patches &&
>  	rm -fr patches &&
> -- 
> 2.23.0.11.g242cf7f110
> 



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