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@xxxxxxxxxxxxxx>
Helped-by: Junio C Hamano <gitster@xxxxxxxxx>
Signed-off-by: Doug Kelly <dougk.ff7@xxxxxxxxx>
---
Added a comment for why test_might_fail is used to abort merges
in progress.
t/t4255-am-submodule.sh | 72 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/t/t4255-am-submodule.sh b/t/t4255-am-submodule.sh
index 8bde7db..450d261 100755
--- a/t/t4255-am-submodule.sh
+++ b/t/t4255-am-submodule.sh
@@ -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
--
2.0.5
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