From: Junio C Hamano <gitster@pobox.com>
To: Stephan Beyer <s-beyer@gmx.net>
Cc: git@vger.kernel.org, Christian Couder <christian.couder@gmail.com>
Subject: Re: [PATCH v2 05/21] t6030: generalize test to not rely on current implementation
Date: Fri, 15 Apr 2016 14:07:41 -0700 [thread overview]
Message-ID: <xmqqpotqa8de.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <1460294354-7031-6-git-send-email-s-beyer@gmx.net> (Stephan Beyer's message of "Sun, 10 Apr 2016 15:18:58 +0200")
Stephan Beyer <s-beyer@gmx.net> writes:
> The bisect algorithm allows different outcomes if, for example,
> the number of commits between a good and a bad commit is even.
> The current test relies on a specific behavior (for example,
> the behavior of the halfway() implementation). By disabling
> halfway(), some skip tests fail although the algorithm works.
>
> This commit generalizes the test t6030 such that it works
> even if the bisect algorithm uses its degree of freedom to
> choose another commit.
>
> While at it, fix some indentation issues: use tabs instead of
> 4 spaces.
While style fixes are very much welcome, it makes the patch
unnecessary noisy. We typically do so as a preparatory clean-up.
And if you do style fixes, please fix other style issues, such as
- use of "if [ ... ]; then", which should be spelled as
if test ...
then
- unnecessasry space between redirection operator and the filename,
and lack of double-quoting around such a filename in a variable
to work around certain vintage of bash that gives unnecessary
warnings, e.g. 'echo foo > $file' must be spelled as
echo foo >"$file"
etc.
> @@ -84,9 +82,8 @@ test_expect_success 'bisect fails if given any junk instead of revs' '
>
> test_expect_success 'bisect reset: back in the master branch' '
> git bisect reset &&
> - echo "* master" > branch.expect &&
> git branch > branch.output &&
> - cmp branch.expect branch.output
> + grep "^* master" branch.output
This is not a style fix, and it is not a "possibly multiple valid
outcomes", either.
If the purpose of change is "to do the right thing", checking the
output from "git symbolic-ref HEAD" against "refs/heads/master" is
the kosher way to check what test is trying to do.
> @@ -180,14 +175,15 @@ test_expect_success 'bisect start: no ".git/BISECT_START" if checkout error' '
> git checkout HEAD hello
> '
>
> -# $HASH1 is good, $HASH4 is bad, we skip $HASH3
> +# $HASH1 is good, monday is bad, we skip $HASH3
I am not sure this s/$HASH4/monday/ is adding value. Certainly it
breaks consistency, which you could keep by defining SIDE_HASH5 or
something when you added the "Ok Monday, let's do it" commit. On
the other hand, you could choose to consistently use branch-relative
names by turning $HASH3 to master~1, etc.
> # but $HASH2 is bad,
> # so we should find $HASH2 as the first bad commit
> ...
> +test_expect_success '"git bisect run" simple case' '
> + echo "#"\!"/bin/sh" > test_script.sh &&
> + echo "grep Another hello > /dev/null" >> test_script.sh &&
> + echo "test \$? -ne 0" >> test_script.sh &&
> + chmod +x test_script.sh &&
Use write_script in the "style fix" preparatory clean-up patch?
> + git bisect start &&
> + git bisect good $HASH1 &&
> + git bisect bad $HASH4 &&
> + git bisect run ./test_script.sh > my_bisect_log.txt &&
> + grep "$HASH3 is the first bad commit" my_bisect_log.txt &&
> + git bisect reset
> +'
> ...
> +test_expect_success '"git bisect run" with more complex "git bisect start"' '
> + echo "#"\!"/bin/sh" > test_script.sh &&
> + echo "grep Ciao hello > /dev/null" >> test_script.sh &&
> + echo "test \$? -ne 0" >> test_script.sh &&
> + chmod +x test_script.sh &&
Likewise.
next prev parent reply other threads:[~2016-04-15 21:07 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-10 13:18 [PATCH v2 00/21] git bisect improvements Stephan Beyer
2016-04-10 13:18 ` [PATCH v2 01/21] bisect: write about `bisect next` in documentation Stephan Beyer
2016-04-10 13:18 ` [PATCH v2 02/21] bisect: allow 'bisect run' if no good commit is known Stephan Beyer
2016-04-10 13:18 ` [PATCH v2 03/21] t/test-lib-functions.sh: generalize test_cmp_rev Stephan Beyer
2016-04-11 0:07 ` Eric Sunshine
2016-04-15 20:00 ` Junio C Hamano
2016-04-24 19:51 ` Stephan Beyer
2016-04-25 18:08 ` Junio C Hamano
2016-04-10 13:18 ` [PATCH v2 04/21] t: use test_cmp_rev() where appropriate Stephan Beyer
2016-04-11 0:07 ` Eric Sunshine
2016-04-15 20:48 ` Junio C Hamano
2016-04-10 13:18 ` [PATCH v2 05/21] t6030: generalize test to not rely on current implementation Stephan Beyer
2016-04-10 13:47 ` Torsten Bögershausen
2016-04-10 19:16 ` Junio C Hamano
2016-04-10 19:37 ` Stephan Beyer
2016-04-11 0:23 ` Eric Sunshine
2016-04-15 21:07 ` Junio C Hamano [this message]
2016-04-10 13:18 ` [PATCH v2 06/21] bisect: add test for the bisect algorithm Stephan Beyer
2016-04-15 21:13 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 07/21] bisect: plug the biggest memory leak Stephan Beyer
2016-04-15 21:18 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 08/21] bisect: make bisect compile if DEBUG_BISECT is set Stephan Beyer
2016-04-15 21:22 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 09/21] bisect: make algorithm behavior independent of DEBUG_BISECT Stephan Beyer
2016-04-15 21:25 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 10/21] bisect: get rid of recursion in count_distance() Stephan Beyer
2016-04-15 21:31 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 11/21] bisect: use struct node_data array instead of int array Stephan Beyer
2016-04-12 23:02 ` Christian Couder
2016-04-15 21:47 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 12/21] bisect: replace clear_distance() by unique markers Stephan Beyer
2016-04-12 23:20 ` Christian Couder
2016-04-15 22:07 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 13/21] bisect: use commit instead of commit list as arguments when appropriate Stephan Beyer
2016-04-15 22:08 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 14/21] bisect: extract get_distance() function from code duplication Stephan Beyer
2016-04-15 22:08 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 15/21] bisect: introduce distance_direction() Stephan Beyer
2016-04-15 22:10 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 16/21] bisect: make total number of commits global Stephan Beyer
2016-04-13 13:23 ` Christian Couder
2016-04-15 22:11 ` Junio C Hamano
2016-04-16 0:44 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 17/21] bisect: rename count_distance() to compute_weight() Stephan Beyer
2016-04-13 13:32 ` Christian Couder
2016-04-15 22:12 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 18/21] bisect: prepare for different algorithms based on find_all Stephan Beyer
2016-04-15 22:36 ` Junio C Hamano
2016-04-10 13:19 ` [PATCH v2 19/21] bisect: use a bottom-up traversal to find relevant weights Stephan Beyer
2016-04-13 14:11 ` Christian Couder
2016-04-15 22:47 ` Junio C Hamano
2016-04-15 22:49 ` Junio C Hamano
2016-04-26 18:27 ` Junio C Hamano
2016-04-10 13:24 ` [PATCH v2 20/21] bisect: compute best bisection in compute_relevant_weights() Stephan Beyer
2016-04-10 13:24 ` [PATCH v2 21/21] bisect: get back halfway shortcut Stephan Beyer
2016-04-15 22:53 ` Junio C Hamano
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