From: "SZEDER Gábor" <szeder.dev@gmail.com>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: Phillip Wood <phillip.wood@dunelm.org.uk>,
Junio C Hamano <gitster@pobox.com>,
git@vger.kernel.org
Subject: Re: [PATCH v2 3/4] rebase: fix garbled progress display with '-x'
Date: Mon, 24 Jun 2019 20:39:27 +0200 [thread overview]
Message-ID: <20190624183927.GA10853@szeder.dev> (raw)
In-Reply-To: <nycvar.QRO.7.76.6.1906122056570.789@QRFXGBC-DHN364S.ybpnyqbznva>
On Wed, Jun 12, 2019 at 09:14:40PM +0200, Johannes Schindelin wrote:
> Hi,
>
> On Tue, 11 Jun 2019, SZEDER Gábor wrote:
>
> > On Tue, Jun 11, 2019 at 01:36:16PM -0700, Junio C Hamano wrote:
> > > SZEDER Gábor <szeder.dev@gmail.com> writes:
> > >
> > > > -Rebasing (1/4)QRebasing (2/4)QRebasing (3/4)QRebasing (4/4)QSuccessfully rebased and updated refs/heads/missing-commit.
> > > > +Rebasing (1/4)QRebasing (2/4)QRebasing (3/4)QRebasing (4/4)QQ QSuccessfully rebased and updated refs/heads/missing-commit.
> > > > EOF
> > >
> > > Yuck,
> >
> > Oh yeah...
> >
> > >... but I do not see how else/better this test can be written
> > > myself, which makes it a double-yuck X-<
> >
> > Perhaps hiding those spaces behind a helper variable e.g.
> > 'dump_term_clear_line=Q<80-spaces>Q' and embedding that in the here
> > docs specifying the expected output in these three tests could make it
> > ever so slightly less yuck...
> >
> > > Are we forcing out test to operate under dumb terminal mode and with
> > > a known number of columns?
> >
> > 'test-lib.sh' sets TERM=dumb relatively early on, and in these tests
> > we don't use 'test_terminal' to run 'git rebase', so... yeah. And
> > term_columns() defaults to 80.
> >
> > However, if the terminal were smart, then we would have to deal with
> > ANSI escape suddenly popping up...
>
> And I fear that is *exactly* what makes
> https://dev.azure.com/gitgitgadget/git/_build/results?buildId=10539&view=ms.vss-test-web.build-test-results-tab
> fail...
>
> You cannot easily see it in that output (probably because of incorrectly
> encoded Escape sequences in the `.xml` output), so I'll paste what I see
> here, locally, when running `t3404-*.sh -i -V -x`:
>
> -- snip --
> [...]
> ok 99 - rebase -i respects rebase.missingCommitsCheck = ignore
>
> expecting success:
> test_config rebase.missingCommitsCheck warn &&
> rebase_setup_and_clean missing-commit &&
> set_fake_editor &&
> FAKE_LINES="1 2 3 4" \
> git rebase -i --root 2>actual &&
> test_i18ncmp expect actual &&
> test D = $(git cat-file commit HEAD | sed -ne \$p)
[...]
> ++ test_cmp expect actual
> ++ GIT_ALLOC_LIMIT=0
> ++ test-tool cmp expect actual
> diff --git a/expect b/actual
> index 05fcfcb..9555e34 100644
> --- a/expect
> +++ b/actual
> @@ -6,4 +6,4 @@ To avoid this message, use "drop" to explicitly remove a commit.
> Use 'git config rebase.missingCommitsCheck' to change the level of warnings.
> The possible behaviours are: ignore, warn, error.
>
> -Rebasing (1/4)^MRebasing (2/4)^MRebasing (3/4)^MRebasing (4/4)^M ^MSuccessfully rebased and updated refs/heads/missing-commit.
> +Rebasing (1/4)^MRebasing (2/4)^MRebasing (3/4)^MRebasing (4/4)^MESC[KSuccessfully rebased and updated refs/heads/missing-commit.
> error: last command exited with $?=1
> not ok 100 - rebase -i respects rebase.missingCommitsCheck = warn
> #
> # test_config rebase.missingCommitsCheck warn &&
> # rebase_setup_and_clean missing-commit &&
> # set_fake_editor &&
> # FAKE_LINES="1 2 3 4" \
> # git rebase -i --root 2>actual &&
> # test_i18ncmp expect actual &&
> # test D = $(git cat-file commit HEAD | sed -ne \$p)
> #
> -- snap --
>
> (I copy-pasted this from the output of `less` so that the control sequences can be seen.)
>
> To be utterly honest, I really fail to see a reason why a test case that
> purports to verify that `git rebase -i` respects
> `rebase.missingCommitsCheck=warn` should fail when the progress is shown in an
> unexpected format.
>
> It strikes me as yet another poorly written test case that fails to catch the
> intended regressions, instead it catches a bug *in the test case itself* when
> legitimate changes are made to the progress code.
>
> Nothing in a test suite is worse than a test that fails (or succeeds) for the
> wrong reasons.
>
> To make things even worse, the code that generates that `expect` file is
> outside the test case.
>
> Here it is, in its full "glory":
>
> -- snip --
> q_to_cr >expect <<EOF
> Warning: some commits may have been dropped accidentally.
> Dropped commits (newer to older):
> - $(git rev-list --pretty=oneline --abbrev-commit -1 master)
> To avoid this message, use "drop" to explicitly remove a commit.
>
> Use 'git config rebase.missingCommitsCheck' to change the level of warnings.
> The possible behaviours are: ignore, warn, error.
>
> Rebasing (1/4)QRebasing (2/4)QRebasing (3/4)QRebasing (4/4)QQ QSuccessfully rebased and updated refs/heads/missing-commit.
> EOF
> -- snap --
>
> May I please *strongly* suggest to fix this first? It should
>
> - completely lose that last line,
> - be inserted into the test case itself so that e.g. disk full problems are
> caught and logged properly, and
> - the `test_i18ncmp expect actual` call in the test case should be replaced
> by something like:
>
> sed "\$d" <actual >actual-skip-progress &&
> test_i18ncmp expect actual-skip-progress
>
> This should obviously be made as a separate, introductory patch (probably with
> a less scathing commit message than my comments above would suggest).
>
> And that would also remove the double-yuck.
Unfortunately, this addresses only one of the "Yuck"s; see v3 of this
patch series [1].
The other yucks affect the following four tests in
't3420-rebase-autostash.sh':
16 - rebase --merge --autostash: check output
23 - rebase --merge: check output with conflicting stash
26 - rebase --interactive --autostash: check output
33 - rebase --interactive: check output with conflicting stash
These tests come from commits b76aeae553 (rebase: add regression tests
for console output, 2017-06-19) and 7d70e6b902 (rebase: add more
regression tests for console output, 2017-06-19), and are specifically
about checking the (whole) console output of 'git rebase', so I left
the updates to them as they were.
In any case, Cc-ing Phillip to discuss whether something could be done
about them (now perhaps preferably (for me :) as a follow-up, and not
another preparatory patches).
[1] https://public-inbox.org/git/20190624181318.17388-3-szeder.dev@gmail.com/T/#u
next prev parent reply other threads:[~2019-06-24 18:39 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-30 14:25 [PATCH] rebase: fix garbled progress display with '-x' SZEDER Gábor
2019-04-30 22:25 ` Johannes Schindelin
2019-05-01 23:16 ` SZEDER Gábor
2019-05-03 8:41 ` Johannes Schindelin
2019-06-11 12:38 ` SZEDER Gábor
2019-06-11 13:03 ` [PATCH v2 0/4] rebase/progress: add and use term_clear_line() SZEDER Gábor
2019-06-11 13:03 ` [PATCH v2 1/4] t3404-rebase-interactive: use the 'q_to_cr' helper SZEDER Gábor
2019-06-11 13:03 ` [PATCH v2 2/4] pager: add a helper function to clear the last line in the terminal SZEDER Gábor
2019-06-11 13:03 ` [PATCH v2 3/4] rebase: fix garbled progress display with '-x' SZEDER Gábor
2019-06-11 20:36 ` Junio C Hamano
2019-06-11 21:11 ` SZEDER Gábor
2019-06-12 19:14 ` Johannes Schindelin
2019-06-12 19:41 ` SZEDER Gábor
2019-06-13 7:54 ` Johannes Schindelin
2019-06-14 18:42 ` Johannes Schindelin
2019-06-17 18:40 ` SZEDER Gábor
2019-06-17 19:13 ` SZEDER Gábor
2019-06-17 19:25 ` SZEDER Gábor
2019-06-24 18:39 ` SZEDER Gábor [this message]
2019-06-25 10:08 ` Phillip Wood
2019-06-25 11:31 ` SZEDER Gábor
2019-06-25 13:33 ` Phillip Wood
2019-06-25 18:00 ` Phillip Wood
2019-06-25 11:38 ` Johannes Schindelin
2019-06-25 13:35 ` Phillip Wood
2019-06-11 20:48 ` Junio C Hamano
2019-06-11 23:50 ` SZEDER Gábor
2019-06-12 16:21 ` Junio C Hamano
2019-06-11 13:03 ` [PATCH v2 4/4] progress: use term_clear_line() SZEDER Gábor
2019-06-12 20:00 ` Johannes Schindelin
2019-06-24 18:13 ` [PATCH v3 0/5] rebase/progress: add and " SZEDER Gábor
2019-06-24 18:13 ` [PATCH v3 1/5] t3404: modernize here doc style SZEDER Gábor
2019-06-25 9:06 ` Johannes Schindelin
2019-06-24 18:13 ` [PATCH v3 2/5] t3404: make the 'rebase.missingCommitsCheck=ignore' test more focused SZEDER Gábor
2019-06-25 9:07 ` Johannes Schindelin
2019-06-24 18:13 ` [PATCH v3 3/5] pager: add a helper function to clear the last line in the terminal SZEDER Gábor
2019-06-24 18:13 ` [PATCH v3 4/5] rebase: fix garbled progress display with '-x' SZEDER Gábor
2019-06-27 13:42 ` [PATCH v3.1 " SZEDER Gábor
2019-06-24 18:13 ` [PATCH v3 5/5] progress: use term_clear_line() SZEDER Gábor
2019-06-25 9:10 ` Johannes Schindelin
2019-06-25 19:44 ` Junio C Hamano
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