git/t/t0068-for-each-repo.sh
Derrick Stolee 6c62f01552 for-each-repo: do nothing on empty config
'git for-each-repo --config=X' should return success without calling any
subcommands when the config key 'X' has no value. The current
implementation instead segfaults.

A user could run into this issue if they used 'git maintenance start' to
initialize their cron schedule using 'git for-each-repo
--config=maintenance.repo ...' but then using 'git maintenance
unregister' to remove the config option. (Note: 'git maintenance stop'
would remove the config _and_ remove the cron schedule.)

Add a simple test to ensure this works. Use 'git help --no-such-option'
as the potential subcommand to ensure that we will hit a failure if the
subcommand is ever run.

Reported-by: Andreas Bühmann <dev@uuml.de>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-07 19:12:02 -08:00

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#!/bin/sh
test_description='git for-each-repo builtin'
. ./test-lib.sh
test_expect_success 'run based on configured value' '
git init one &&
git init two &&
git init three &&
git -C two commit --allow-empty -m "DID NOT RUN" &&
git config run.key "$TRASH_DIRECTORY/one" &&
git config --add run.key "$TRASH_DIRECTORY/three" &&
git for-each-repo --config=run.key commit --allow-empty -m "ran" &&
git -C one log -1 --pretty=format:%s >message &&
grep ran message &&
git -C two log -1 --pretty=format:%s >message &&
! grep ran message &&
git -C three log -1 --pretty=format:%s >message &&
grep ran message &&
git for-each-repo --config=run.key -- commit --allow-empty -m "ran again" &&
git -C one log -1 --pretty=format:%s >message &&
grep again message &&
git -C two log -1 --pretty=format:%s >message &&
! grep again message &&
git -C three log -1 --pretty=format:%s >message &&
grep again message
'
test_expect_success 'do nothing on empty config' '
# the whole thing would fail if for-each-ref iterated even
# once, because "git help --no-such-option" would fail
git for-each-repo --config=bogus.config -- help --no-such-option
'
test_done