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t4255: test am submodule with diff.submodule

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git am will break when using diff.submodule=log; add some test cases
to illustrate this breakage as simply as possible.  There are
currently two ways this can fail:

* With errors ("unrecognized input"), if only change
* Silently (no submodule change), if other files change

Test for both conditions and ensure without diff.submodule this works.

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Doug Kelly <dougk.ff7@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Doug Kelly 2015-01-07 14:32:11 -06:00 committed by Junio C Hamano
parent 7ba46269a0
commit fe7611c46f
1 changed files with 72 additions and 0 deletions
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72
t/t4255-am-submodule.sh
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@ -18,4 +18,76 @@ am_3way () {
KNOWN_FAILURE_NOFF_MERGE_ATTEMPTS_TO_MERGE_REMOVED_SUBMODULE_FILES=1
test_submodule_switch "am_3way"
test_expect_success 'setup diff.submodule' '
test_commit one &&
INITIAL=$(git rev-parse HEAD) &&
git init submodule &&
(
cd submodule &&
test_commit two &&
git rev-parse HEAD >../initial-submodule
) &&
git submodule add ./submodule &&
git commit -m first &&
(
cd submodule &&
test_commit three &&
git rev-parse HEAD >../first-submodule
) &&
git add submodule &&
git commit -m second &&
SECOND=$(git rev-parse HEAD) &&
(
cd submodule &&
git mv two.t four.t &&
git commit -m "second submodule" &&
git rev-parse HEAD >../second-submodule
) &&
test_commit four &&
git add submodule &&
git commit --amend --no-edit &&
THIRD=$(git rev-parse HEAD) &&
git submodule update --init
'
run_test() {
START_COMMIT=$1 &&
EXPECT=$2 &&
# Abort any merges in progress: the previous
# test may have failed, and we should clean up.
test_might_fail git am --abort &&
git reset --hard $START_COMMIT &&
rm -f *.patch &&
git format-patch -1 &&
git reset --hard $START_COMMIT^ &&
git submodule update &&
git am *.patch &&
git submodule update &&
git -C submodule rev-parse HEAD >actual &&
test_cmp $EXPECT actual
}
test_expect_success 'diff.submodule unset' '
test_unconfig diff.submodule &&
run_test $SECOND first-submodule
'
test_expect_success 'diff.submodule unset with extra file' '
test_unconfig diff.submodule &&
run_test $THIRD second-submodule
'
test_expect_failure 'diff.submodule=log' '
test_config diff.submodule log &&
run_test $SECOND first-submodule
'
test_expect_failure 'diff.submodule=log with extra file' '
test_config diff.submodule log &&
run_test $THIRD second-submodule
'
test_done