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From: Phillip Wood <phillip.wood@talktalk.net>
To: "Junio C Hamano" <gitster@pobox.com>,
	"SZEDER Gábor" <szeder.dev@gmail.com>
Cc: Git Mailing List <git@vger.kernel.org>,
	"Brian M. Carlson" <sandals@crustytoothpaste.net>,
	Eric Sunshine <sunshine@sunshineco.com>,
	Phillip Wood <phillip.wood@dunelm.org.uk>
Subject: Re: [PATCH v4 4/9] t3701: don't hard code sha1 hash values
Date: Mon, 5 Mar 2018 10:59:15 +0000	[thread overview]
Message-ID: <bb6be000-7a62-7ad5-0b59-90a75fd6dca9@talktalk.net> (raw)
In-Reply-To: <xmqqa7vqe9xn.fsf@gitster-ct.c.googlers.com>

On 02/03/18 16:09, Junio C Hamano wrote:
> SZEDER Gábor <szeder.dev@gmail.com> writes:
> 
>>> +diff_cmp () {
>>> +	for x
>>> +	do
>>> +		sed  -e '/^index/s/[0-9a-f]*[1-9a-f][0-9a-f]*\.\./1234567../' \
>>> +		     -e '/^index/s/\.\.[0-9a-f]*[1-9a-f][0-9a-f]*/..9abcdef/' \
>>> +		     -e '/^index/s/ 00*\.\./ 0000000../' \
>>> +		     -e '/^index/s/\.\.00*$/..0000000/' \
>>> +		     -e '/^index/s/\.\.00* /..0000000 /' \
>>> +		     "$x" >"$x.filtered"
>>> +	done
>>> +	test_cmp "$1.filtered" "$2.filtered"
>>> +}
>>
>> t3701 is not the only test script comparing diffs, many other
>> tests do so:
>>
>>   $ git grep 'diff --git' t/ |wc -l
>>   835
>>
>> It's totally inaccurate, but a good ballpark figure.
>>
>> I think this function should be a widely available test helper
>> function in 'test-lib-functions.sh', perhaps renamed to
>> 'test_cmp_diff', so those other tests could use it as well.
> 
> I am on the fence.  
> 
> The above does not redact enough (e.g. rename/copy score should be
> redacted while comparing) to serve as a generic filter.
> 
> We could certainly extend it when we make code in other tests use
> the helper, but then we can do the moving to test-lib-functions when
> that happens, too.
> 
> Those who will be writing new tests that need to compare two diff
> outputs are either (1) people who are careful and try to find
> existing tests that do the same, to locate the helper we already
> have to be reused in theirs, or (2) people who don't and roll their
> own.  The latter camp cannot be helped either way, but the former
> will run "git grep 'diff --git' t/" and find the helper whether it
> is in this script or in test-lib-functions, I would think.
> 
> So, I certainly do not mind a reroll to move it to a more generic
> place, but I do not think I would terribly mind if we leave it in
> its current place, later to be moved by the first new caller that
> wants to use it from outside this script.
> 

I did wonder about putting this function in a library when I first wrote
it but decided to wait and see if it is useful instead. As Junio points
out it would need to be improved to act as a generic filter, so I'll
take the easy option and leave it where it is at the moment.

Best Wishes

Phillip

  reply	other threads:[~2018-03-05 10:59 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-13 10:44 [PATCH 0/4] Correct offsets of hunks when one is skipped Phillip Wood
2018-02-13 10:44 ` [PATCH 1/4] add -i: add function to format hunk header Phillip Wood
2018-02-13 10:44 ` [PATCH 2/4] t3701: add failing test for pathological context lines Phillip Wood
2018-02-13 20:35   ` Junio C Hamano
2018-02-13 10:44 ` [PATCH 3/4] add -p: Adjust offsets of subsequent hunks when one is skipped Phillip Wood
2018-02-13 10:44 ` [PATCH 4/4] add -p: calculate offset delta for edited patches Phillip Wood
2018-02-13 23:56 ` [PATCH 0/4] Correct offsets of hunks when one is skipped brian m. carlson
2018-02-19 13:01   ` Phillip Wood
2018-02-19 11:29 ` [PATCH v2 0/9] " Phillip Wood
2018-02-19 11:29   ` [PATCH v2 1/9] add -i: add function to format hunk header Phillip Wood
2018-02-20 18:21     ` Junio C Hamano
2018-02-19 11:29   ` [PATCH v2 2/9] t3701: indent here documents Phillip Wood
2018-02-19 18:36     ` Eric Sunshine
2018-02-19 11:29   ` [PATCH v2 3/9] t3701: use test_write_lines and write_script Phillip Wood
2018-02-19 18:47     ` Eric Sunshine
2018-02-20 17:19       ` Junio C Hamano
2018-02-21 11:26         ` Phillip Wood
2018-02-19 11:29   ` [PATCH v2 4/9] t3701: don't hard code sha1 hash values Phillip Wood
2018-02-19 18:52     ` Eric Sunshine
2018-02-20 17:39     ` Junio C Hamano
2018-02-21 11:42       ` Phillip Wood
2018-02-21 16:58         ` Junio C Hamano
2018-02-19 11:29   ` [PATCH v2 5/9] t3701: add failing test for pathological context lines Phillip Wood
2018-02-21 11:28     ` Phillip Wood
2018-02-19 11:29   ` [PATCH v2 6/9] add -p: Adjust offsets of subsequent hunks when one is skipped Phillip Wood
2018-02-19 11:29   ` [PATCH v2 7/9] add -p: calculate offset delta for edited patches Phillip Wood
2018-02-19 11:29   ` [PATCH v2 8/9] add -p: fix counting when splitting and coalescing Phillip Wood
2018-02-19 11:29   ` [PATCH v2 9/9] add -p: don't rely on apply's '--recount' option Phillip Wood
2018-02-20 18:50     ` Junio C Hamano
2018-02-27 11:03 ` [PATCH v3 0/9] Correct offsets of hunks when one is skipped Phillip Wood
2018-02-27 11:03   ` [PATCH v3 1/9] add -i: add function to format hunk header Phillip Wood
2018-02-27 11:03   ` [PATCH v3 2/9] t3701: indent here documents Phillip Wood
2018-02-27 22:35     ` Junio C Hamano
2018-02-28 11:00       ` Phillip Wood
2018-02-28 15:37         ` Junio C Hamano
2018-03-01 10:57           ` Phillip Wood
2018-03-01 15:58             ` Junio C Hamano
2018-02-27 11:03   ` [PATCH v3 3/9] t3701: use test_write_lines and write_script Phillip Wood
2018-02-27 11:03   ` [PATCH v3 4/9] t3701: don't hard code sha1 hash values Phillip Wood
2018-02-27 22:42     ` Junio C Hamano
2018-02-28 11:03       ` Phillip Wood
2018-02-28 11:10         ` Phillip Wood
2018-02-27 11:04   ` [PATCH v3 5/9] t3701: add failing test for pathological context lines Phillip Wood
2018-02-27 11:04   ` [PATCH v3 6/9] add -p: Adjust offsets of subsequent hunks when one is skipped Phillip Wood
2018-02-27 11:04   ` [PATCH v3 7/9] add -p: calculate offset delta for edited patches Phillip Wood
2018-02-27 11:04   ` [PATCH v3 8/9] add -p: fix counting when splitting and coalescing Phillip Wood
2018-02-27 11:04   ` [PATCH v3 9/9] add -p: don't rely on apply's '--recount' option Phillip Wood
2018-03-01 10:50 ` [PATCH v4 0/9] Correct offsets of hunks when one is skipped Phillip Wood
2018-03-01 10:50   ` [PATCH v4 1/9] add -i: add function to format hunk header Phillip Wood
2018-03-01 10:50   ` [PATCH v4 2/9] t3701: indent here documents Phillip Wood
2018-03-01 10:50   ` [PATCH v4 3/9] t3701: use test_write_lines and write_script Phillip Wood
2018-03-01 10:50   ` [PATCH v4 4/9] t3701: don't hard code sha1 hash values Phillip Wood
2018-03-02 15:55     ` SZEDER Gábor
2018-03-02 16:09       ` Junio C Hamano
2018-03-05 10:59         ` Phillip Wood [this message]
2018-03-05 12:32           ` SZEDER Gábor
2018-03-01 10:50   ` [PATCH v4 5/9] t3701: add failing test for pathological context lines Phillip Wood
2018-03-01 10:51   ` [PATCH v4 6/9] add -p: adjust offsets of subsequent hunks when one is skipped Phillip Wood
2018-03-01 10:51   ` [PATCH v4 7/9] add -p: calculate offset delta for edited patches Phillip Wood
2018-03-01 20:14     ` Junio C Hamano
2018-03-02 10:36       ` Phillip Wood
2018-03-01 10:51   ` [PATCH v4 8/9] add -p: fix counting when splitting and coalescing Phillip Wood
2018-03-01 20:29     ` Junio C Hamano
2018-03-02 10:48       ` Phillip Wood
2018-03-01 10:51   ` [PATCH v4 9/9] add -p: don't rely on apply's '--recount' option Phillip Wood
2018-03-01 20:30     ` Junio C Hamano
2018-03-02 10:49       ` Phillip Wood
2018-03-05 10:56 ` [PATCH v5 0/9] Correct offsets of hunks when one is skipped Phillip Wood
2018-03-05 10:56   ` [PATCH v5 1/9] add -i: add function to format hunk header Phillip Wood
2018-03-05 10:56   ` [PATCH v5 2/9] t3701: indent here documents Phillip Wood
2018-03-05 10:56   ` [PATCH v5 3/9] t3701: use test_write_lines and write_script Phillip Wood
2018-03-05 10:56   ` [PATCH v5 4/9] t3701: don't hard code sha1 hash values Phillip Wood
2018-03-05 10:56   ` [PATCH v5 5/9] t3701: add failing test for pathological context lines Phillip Wood
2018-03-05 10:56   ` [PATCH v5 6/9] add -p: adjust offsets of subsequent hunks when one is skipped Phillip Wood
2018-03-05 10:56   ` [PATCH v5 7/9] add -p: calculate offset delta for edited patches Phillip Wood
2018-03-05 10:56   ` [PATCH v5 8/9] add -p: fix counting when splitting and coalescing Phillip Wood
2018-03-05 10:56   ` [PATCH v5 9/9] add -p: don't rely on apply's '--recount' option Phillip Wood
2018-03-05 18:50   ` [PATCH v5 0/9] Correct offsets of hunks when one is skipped Junio C Hamano
2018-03-06 10:25     ` Phillip Wood

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