Re: [PATCH v15 01/16] test: add test cases for relative_path

[Junio C Hamano <gitster@pobox.com>]

Jiang Xin <worldhello.net@gmail.com> writes:

> Add subcommand "relative_path" in test-path-utils, and add test cases
> in t0060.
>
> Johannes tested this commit on Windows, and found that some relative_path

"this commit", or "an earlier version of this patch"?  I am guessing
it is the latter (if so, I can easily amend locally without a need
for rerolling).

> tests should be skipped on Windows. This is because the bash on Windows
> rewrites arguments of regular Windows programs, such as git and the
> test helpers, if the arguments look like absolute POSIX paths. As a
> consequence, the actual tests performed are not what the tests scripts
> expect.
>
> The tests that need *not* be skipped are those where the two paths passed
> to 'test-path-utils relative_path' have the same prefix and the result is
> expected to be a relative path. This is because the rewriting changes
> "/a/b" to "D:/Src/MSysGit/a/b", and when both inputs are extended the same
> way, this just cancels out in the relative path computation.
>
> Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
> Signed-off-by: Johannes Sixt <j6t@kdbg.org>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>

I somehow lost track, but does the above list of sign-offs reflect
the origins of the changes contained in this patch, or is the second
one meant to be helped-by or something (if so, I can easily amend
locally without a need for rerolling)?

> +relative_path /		/a/b/		/	POSIX
> +relative_path /a/c	/a/b/		/a/c	POSIX
> +relative_path /a/c	/a/b		/a/c	POSIX

(mental note, not a complaint): These are notable, as some may
expect to see "..", "../.."  and "../c" for these cases, but the
rule is "ignore base and return it if it is absolute", so they are
understandable.

> +relative_path a		a/b		a	# TODO: should be: ..
> +relative_path x/y	a/b		x/y	# TODO: should be: ../../x/y
> +relative_path a/c	a/b		a/c	# TODO: should be: ../c

(mental note): OK.  Let's see how they evolve in later patches.

Thanks.