t7604-merge-custom-message: show that --log doesn't append to -m

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t7604-merge-custom-message.sh b/t/t7604-merge-custom-message.sh
index d79542d847627f0e8bb228b69baac8e75b70a5f2..af53df1c1b0773133dd9883492e286898e60a0c6 100755 (executable)
--- a/t/t7604-merge-custom-message.sh
+++ b/t/t7604-merge-custom-message.sh
@@ -8,6 +8,11 @@ Testing merge when using a custom message for the merge commit.'
 
 create_merge_msgs() {
        echo >exp.subject "custom message"
+
+       cp exp.subject exp.log &&
+       echo >>exp.log "" &&
+       echo >>exp.log "* commit 'c2':" &&
+       echo >>exp.log "  c2"
 }
 
 test_expect_success 'setup' '
@@ -35,4 +40,11 @@ test_expect_success 'merge c2 with a custom message' '
        test_cmp exp.subject actual
 '
 
+test_expect_failure 'merge --log appends to custom message' '
+       git reset --hard c1 &&
+       git merge --log -m "$(cat exp.subject)" c2 &&
+       git cat-file commit HEAD | sed -e "1,/^$/d" >actual &&
+       test_cmp exp.log actual
+'
+
 test_done