From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 02 Jan 2014 22:41:06 GMT
Subject: Re: [PATCH 0/3] t0000 cleanups
Message-ID: <xmqqob3unh19.fsf@gitster.dls.corp.google.com>
In-Reply-To: <20140102222833.GR20443@google.com>

Jonathan Nieder <jrnieder@gmail.com> writes:

> Jeff King wrote:
>> On Mon, Dec 30, 2013 at 10:51:25AM -0800, Jonathan Nieder wrote:
>
>>> 	These scratch areas for sub-tests should be under the t0000
>>> 	trash directory, but because the TEST_OUTPUT_DIRECTORY
>>> 	setting from the toplevel test leaks
> [...]
>> This is not exactly true. The TEST_OUTPUT_DIRECTORY setting does not
>> leak. t0000 sets $TEST_DIRECTORY (which it must, so the sub-scripts can
>> find test-lib.sh and friends), and then TEST_OUTPUT_DIRECTORY uses that
>> as a default if it is not explicitly set.
>
> So I should have said something like the following instead:
>
> 	These scratch areas for sub-tests should be under the t0000 trash
> 	directory, but because TEST_OUTPUT_DIRECTORY defaults to
> 	TEST_DIRECTORY which is exported to help sub-tests find test-lib.sh,
> 	the sub-test trash directories are created under the toplevel t/
> 	directory instead.  Because some of the sub-tests simulate failures,
> 	their trash directories are kept around.

I had a private rewrite queued already, but the above is easier to
read, so I'll replace it with this.

Thanks.

>
> 	Fix it by explicitly setting TEST_OUTPUT_DIRECTORY appropriately
> 	for sub-tests.
>
> Thanks for catching it.
>
> Jonathan