From: "SZEDER Gábor" <szeder.dev@gmail.com>
To: Jeff King <peff@peff.net>
Cc: "Junio C Hamano" <gitster@pobox.com>,
git@vger.kernel.org, "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
"Eric Wong" <e@80x24.org>
Subject: Re: [PATCH 2/2] ci: restore running httpd tests
Date: Sat, 7 Sep 2019 12:16:37 +0200 [thread overview]
Message-ID: <20190907101637.GE32087@szeder.dev> (raw)
In-Reply-To: <20190906191300.GA10769@sigill.intra.peff.net>
On Fri, Sep 06, 2019 at 03:13:01PM -0400, Jeff King wrote:
> On Fri, Sep 06, 2019 at 02:13:26PM +0200, SZEDER Gábor wrote:
>
> > Once upon a time GIT_TEST_HTTPD was a tristate variable and we
> > exported 'GIT_TEST_HTTPD=YesPlease' in our CI scripts to make sure
> > that we run the httpd tests in the Linux Clang and GCC build jobs, or
> > error out if they can't be run for any reason [1].
>
> Yikes, good catch.
>
> I wonder if it would be possible for the test suite to catch this. I
> think env--helper would have written a message to stderr, but because we
> use --exit-code, we can't tell the difference between that and "false".
No, '--exit-code' only suppresses the printing of 'true' and 'false',
but it doesn't have any effect on the command's exit code. And if the
value of the environment variable is not a bool, then it does print an
error message to standard error, and, more importantly, exits with 128
(as opposed to 1 indicating false). So we could tell the difference,
but as it happens the command is invoked as 'if ! git env-helper ...',
which then interprets that 128 the same as on ordinary false.
$ VAR=false git env--helper --type=bool --default=false --exit-code VAR ; echo $?
1
$ VAR=true git env--helper --type=bool --default=false --exit-code VAR ; echo $?
0
$ VAR=YesPlease git env--helper --type=bool --default=false --exit-code VAR ; echo $?
fatal: bad numeric config value 'YesPlease' for 'VAR': invalid unit
128
> I think we'd have go back to something more like:
>
> test_tristate () {
The env var is supposed to be a bool, so there is no third state
anymore.
> bool=$(git env--helper --type=bool --default=true "$1") ||
Some callsites use '--default=false', so we need a second parameter to
specify the default.
> eval "error \"$1 is not a bool: \$$1\""
> test "$bool" = "true"
> }
> ...
> if test_tristate GIT_TEST_HTTPD
> then
> ... use httpd ...
> fi
>
> Not sure if it's worth it.
Well... On one hand, there are no other similar issues in our CI
scripts (there is still a GIT_TEST_CLONE_2GB=YesPlease, but it's only
ever checked with 'test -z' in 't5608-clone-2gb.sh', so it works as
expected, even though it's inconsistent, and
'GIT_TEST_CLONE_2GB=NoThanks' would do the wrong thing).
OTOH, some unsuspecting devs might still have a
'GIT_TEST_foo=YesPlease' in their 'config.mak' from the old days...
Furthermore, as for the "good catch", I just got lucky, and not only
once but several times in a row: that Perforce filehost outage the
other day errored one of my builds, so I came up with a fix [1], for
once took the extra effort and checked it on Azure Pipelines, and
since that was my first ever build over there, out of curiosity I
scrolled through the whole build output, by chance those "skipped:
Network testing disabled (unset GIT_TEST_HTTPD to enable)" lines
caught my eye, shrugged and thought that Dscho should better fix this,
but then an hour later got suspicious, so looked up a recent Travis CI
build, and... here we are.
I have to wonder how much longer it could have been remained
unnoticed, if the Perforce filehost hadn't failed or if I hadn't made
the gitgitgadget PR for my fix, or...
Anyway, this is just a long-winded way to say that I think we should
validate those bools properly and error loudly on an invalid value
even if it doesn't seem to worth it.
[1] https://public-inbox.org/git/20190906102711.6401-1-szeder.dev@gmail.com/T/
next prev parent reply other threads:[~2019-09-07 10:16 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-19 9:46 [PATCH] fetch: only run 'gc' once when fetching multiple remotes Nguyễn Thái Ngọc Duy
2019-06-19 10:26 ` [RFC/PATCH] gc: run more pre-detach operations under lock Ævar Arnfjörð Bjarmason
2019-06-19 12:51 ` Duy Nguyen
2019-06-19 18:01 ` Ævar Arnfjörð Bjarmason
2019-06-19 19:10 ` Jeff King
2019-06-19 22:49 ` Ævar Arnfjörð Bjarmason
2019-06-19 23:30 ` [PATCH 0/6] Change <non-empty?> GIT_TEST_* variables to <boolean> Ævar Arnfjörð Bjarmason
2019-06-20 18:13 ` Junio C Hamano
2019-06-20 21:00 ` Ævar Arnfjörð Bjarmason
2019-06-20 20:03 ` Junio C Hamano
2019-06-20 21:09 ` [PATCH v2 0/8] " Ævar Arnfjörð Bjarmason
2019-06-21 10:18 ` [PATCH v3 " Ævar Arnfjörð Bjarmason
2019-06-21 10:18 ` [PATCH v3 1/8] config tests: simplify include cycle test Ævar Arnfjörð Bjarmason
2019-06-21 10:18 ` [PATCH v3 2/8] env--helper: new undocumented builtin wrapping git_env_*() Ævar Arnfjörð Bjarmason
2019-06-21 17:07 ` Junio C Hamano
2019-06-21 10:18 ` [PATCH v3 3/8] config.c: refactor die_bad_number() to not call gettext() early Ævar Arnfjörð Bjarmason
2019-06-21 10:18 ` [PATCH v3 4/8] t6040 test: stop using global "script" variable Ævar Arnfjörð Bjarmason
2019-06-21 10:18 ` [PATCH v3 5/8] tests: make GIT_TEST_GETTEXT_POISON a boolean Ævar Arnfjörð Bjarmason
2019-06-24 16:47 ` Junio C Hamano
2019-06-21 10:18 ` [PATCH v3 6/8] tests README: re-flow a previously changed paragraph Ævar Arnfjörð Bjarmason
2019-06-21 10:18 ` [PATCH v3 7/8] tests: replace test_tristate with "git env--helper" Ævar Arnfjörð Bjarmason
2019-09-06 12:13 ` [PATCH 1/2] t/lib-git-svn.sh: check GIT_TEST_SVN_HTTPD when running SVN HTTP tests SZEDER Gábor
2019-09-06 12:13 ` [PATCH 2/2] ci: restore running httpd tests SZEDER Gábor
2019-09-06 17:03 ` Junio C Hamano
2019-09-06 19:13 ` Jeff King
2019-09-07 10:16 ` SZEDER Gábor [this message]
2019-11-22 13:14 ` [PATCH 0/2] tests: catch non-bool GIT_TEST_* values SZEDER Gábor
2019-11-22 13:14 ` [PATCH 1/2] tests: add 'test_bool_env' to " SZEDER Gábor
2019-11-25 13:50 ` Jeff King
2019-11-22 13:14 ` [PATCH 2/2] t5608-clone-2gb.sh: turn GIT_TEST_CLONE_2GB into a bool SZEDER Gábor
2019-11-25 13:53 ` Jeff King
2019-06-21 10:18 ` [PATCH v3 8/8] tests: make GIT_TEST_FAIL_PREREQS a boolean Ævar Arnfjörð Bjarmason
2019-06-20 21:09 ` [PATCH v2 1/8] config tests: simplify include cycle test Ævar Arnfjörð Bjarmason
2019-06-20 21:09 ` [PATCH v2 2/8] env--helper: new undocumented builtin wrapping git_env_*() Ævar Arnfjörð Bjarmason
2019-06-20 22:11 ` Junio C Hamano
2019-06-20 22:21 ` Junio C Hamano
2019-06-21 8:11 ` Ævar Arnfjörð Bjarmason
2019-06-21 15:04 ` Junio C Hamano
2019-06-20 21:09 ` [PATCH v2 3/8] config.c: refactor die_bad_number() to not call gettext() early Ævar Arnfjörð Bjarmason
2019-06-20 21:09 ` [PATCH v2 4/8] t6040 test: stop using global "script" variable Ævar Arnfjörð Bjarmason
2019-06-20 21:09 ` [PATCH v2 5/8] tests: make GIT_TEST_GETTEXT_POISON a boolean Ævar Arnfjörð Bjarmason
2019-06-20 21:09 ` [PATCH v2 6/8] tests README: re-flow a previously changed paragraph Ævar Arnfjörð Bjarmason
2019-06-20 21:09 ` [PATCH v2 7/8] tests: replace test_tristate with "git env--helper" Ævar Arnfjörð Bjarmason
2019-06-20 21:09 ` [PATCH v2 8/8] tests: make GIT_TEST_FAIL_PREREQS a boolean Ævar Arnfjörð Bjarmason
2019-06-19 23:30 ` [PATCH 1/6] env--helper: new undocumented builtin wrapping git_env_*() Ævar Arnfjörð Bjarmason
2019-06-20 19:25 ` Junio C Hamano
2019-06-19 23:30 ` [PATCH 2/6] t6040 test: stop using global "script" variable Ævar Arnfjörð Bjarmason
2019-06-20 19:54 ` Junio C Hamano
2019-06-19 23:30 ` [PATCH 3/6] tests: make GIT_TEST_GETTEXT_POISON a boolean Ævar Arnfjörð Bjarmason
2019-06-20 20:00 ` Junio C Hamano
2019-06-19 23:30 ` [PATCH 4/6] tests README: re-flow a previously changed paragraph Ævar Arnfjörð Bjarmason
2019-06-19 23:30 ` [PATCH 5/6] tests: replace test_tristate with "git env--helper" Ævar Arnfjörð Bjarmason
2019-06-19 23:30 ` [PATCH 6/6] tests: make GIT_TEST_FAIL_PREREQS a boolean Ævar Arnfjörð Bjarmason
2019-06-20 10:26 ` [RFC/PATCH] gc: run more pre-detach operations under lock Duy Nguyen
2019-06-20 21:49 ` Ævar Arnfjörð Bjarmason
2019-06-20 10:43 ` Jeff King
2019-06-20 18:55 ` Junio C Hamano
2019-06-19 19:08 ` Jeff King
2019-06-19 18:59 ` [PATCH] fetch: only run 'gc' once when fetching multiple remotes Jeff King
2019-06-20 10:11 ` Duy Nguyen
2019-06-20 10:21 ` Jeff King
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