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From: Taylor Blau <me@ttaylorr.com>
To: "SZEDER Gábor via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, peff@peff.net, me@ttaylorr.com,
	garimasigit@gmail.com, szeder.dev@gmail.com, jnareb@gmail.com,
	Derrick Stolee <dstolee@microsoft.com>
Subject: Re: [PATCH 09/12]  t4211-line-log: add tests for parent oids
Date: Mon, 4 May 2020 11:31:06 -0600	[thread overview]
Message-ID: <20200504173106.GA35579@syl.local> (raw)
In-Reply-To: <4e3d7233095064de197c447cb31cf4652d42b775.1588347029.git.gitgitgadget@gmail.com>

On Fri, May 01, 2020 at 03:30:26PM +0000, SZEDER Gábor via GitGitGadget wrote:
> From: =?UTF-8?q?SZEDER=20G=C3=A1bor?= <szeder.dev@gmail.com>
>
> None of the tests in 't4211-line-log.sh' really check which parent
> object IDs are shown in the output, either implicitly as part of
> "Merge: ..." lines [1] or explicitly via the '%p' or '%P' format
> specifiers in a custom pretty format.
>
> Add two tests to 't4211-line-log.sh' to check which parent object IDs
> are shown, one without and one with explicitly requested parent
> rewriting, IOW without and with the '--parents' option.
>
> The test without '--parents' is marked as failing, because without
> that option parent rewriting should not be performed, and thus the
> parent object ID should be that of the immediate parent, just like in
> case of a pathspec-limited history traversal without parent rewriting.
> The current line-level log implementation, however, performs parent
> rewriting unconditionally and without a possibility to turn it off,
> and, consequently, it shows the object ID of the most recent ancestor
> that modified the given line range.
>
> In both of these new tests we only really care about the object IDs of
> the listed commits and their parents, but not the diffs of the line
> ranges; the diffs have already been thoroughly checked in the previous
> tests.
>
> [1] While one of the tests ('-M -L ':f:b.c' parallel-change') does
>     list a merge commit, both of its parents happen to modify the
>     given line range and are listed as well, so the implications of
>     parent rewriting remained hidden and untested.
>
> Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
> Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
> ---

These tests make sense, and demonstrate the problem nicely. I don't
think that I have a ton to add to this patch, so:

  Reviewed-by: Taylor Blau <me@ttaylorr.com>

Thanks,
Taylor

  reply	other threads:[~2020-05-04 17:31 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-01 15:30 [PATCH 00/12] Integrating line-log and changed-path Bloom filters Derrick Stolee via GitGitGadget
2020-05-01 15:30 ` [PATCH 01/12] bloom: fix whitespace around tab length Derrick Stolee via GitGitGadget
2020-05-01 22:51   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 02/12] test-bloom: fix usage typo Derrick Stolee via GitGitGadget
2020-05-01 22:51   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 03/12] Documentation: changed-path Bloom filters use byte words Derrick Stolee via GitGitGadget
2020-05-01 22:55   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 04/12] bloom: de-duplicate directory entries Derrick Stolee via GitGitGadget
2020-05-01 23:06   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 05/12] bloom: parse commit before computing filters Derrick Stolee via GitGitGadget
2020-05-01 23:10   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 06/12] bloom: use num_changes not nr for limit detection Derrick Stolee via GitGitGadget
2020-05-01 23:12   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 07/12] completion: offer '--(no-)patch' among 'git log' options SZEDER Gábor via GitGitGadget
2020-05-01 23:44   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 08/12] line-log: remove unused fields from 'struct line_log_data' SZEDER Gábor via GitGitGadget
2020-05-01 23:46   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 09/12] t4211-line-log: add tests for parent oids SZEDER Gábor via GitGitGadget
2020-05-04 17:31   ` Taylor Blau [this message]
2020-05-01 15:30 ` [PATCH 10/12] line-log: more responsive, incremental 'git log -L' SZEDER Gábor via GitGitGadget
2020-05-04 17:52   ` Taylor Blau
2020-05-04 17:55     ` Derrick Stolee
2020-05-01 15:30 ` [PATCH 11/12] line-log: try to use generation number-based topo-ordering SZEDER Gábor via GitGitGadget
2020-05-04 21:25   ` Taylor Blau
2020-05-01 15:30 ` [PATCH 12/12] line-log: integrate with changed-path Bloom filters Derrick Stolee via GitGitGadget
2020-05-04 21:50   ` Taylor Blau
2020-05-01 17:34 ` [PATCH 00/12] Integrating line-log and " Junio C Hamano
2020-05-11 11:56 ` [PATCH v2 " Derrick Stolee via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 01/12] bloom: fix whitespace around tab length Derrick Stolee via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 02/12] test-bloom: fix usage typo Derrick Stolee via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 03/12] bloom: parse commit before computing filters Derrick Stolee via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 04/12] Documentation: changed-path Bloom filters use byte words Derrick Stolee via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 05/12] bloom: de-duplicate directory entries Derrick Stolee via GitGitGadget
2020-06-07 21:45     ` SZEDER Gábor
2020-05-11 11:56   ` [PATCH v2 06/12] bloom: use num_changes not nr for limit detection Derrick Stolee via GitGitGadget
2020-08-04 14:51     ` SZEDER Gábor
2020-05-11 11:56   ` [PATCH v2 07/12] completion: offer '--(no-)patch' among 'git log' options SZEDER Gábor via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 08/12] line-log: remove unused fields from 'struct line_log_data' SZEDER Gábor via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 09/12] t4211-line-log: add tests for parent oids SZEDER Gábor via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 10/12] line-log: more responsive, incremental 'git log -L' SZEDER Gábor via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 11/12] line-log: try to use generation number-based topo-ordering SZEDER Gábor via GitGitGadget
2020-05-11 11:56   ` [PATCH v2 12/12] line-log: integrate with changed-path Bloom filters Derrick Stolee via GitGitGadget

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