Add a test for merging changed and rename-changed branches

Also leave a warning for future merge-recursive explorers.

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/merge-recursive.c b/merge-recursive.c
index 37f1ba93fe943e45a984c012b31390d68fc9498c..094ac59e69779621caf2872c8b4ee14242e89357 100644 (file)
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1345,6 +1345,11 @@ static int process_renames(struct path_list *a_renames,
                                if (mfi.merge && mfi.clean &&
                                    sha_eq(mfi.sha, ren1->pair->two->sha1) &&
                                    mfi.mode == ren1->pair->two->mode)
+                                       /*
+                                        * This messaged is part of
+                                        * t6022 test. If you change
+                                        * it update the test too.
+                                        */
                                        output(3, "Skipped %s (merged same as existing)", ren1_dst);
                                else {
                                        if (mfi.merge || !mfi.clean)

diff --git a/t/t6022-merge-rename.sh b/t/t6022-merge-rename.sh
index b608e202c18fd545868898fcd0528c3501459b6f..e3f7ae8120aa2a46b25dd3830597cb863a5f5e20 100755 (executable)
--- a/t/t6022-merge-rename.sh
+++ b/t/t6022-merge-rename.sh
@@ -47,6 +47,8 @@ git branch white &&
 git branch red &&
 git branch blue &&
 git branch yellow &&
+git branch change &&
+git branch change+rename &&
 
 sed -e "/^g /s/.*/g : master changes a line/" <A >A+ &&
 mv A+ A &&
@@ -77,6 +79,17 @@ rm -f A M &&
 git update-index --add --remove A C M N &&
 git commit -m "blue renames A->C, M->N" &&
 
+git checkout change &&
+sed -e "/^g /s/.*/g : changed line/" <A >A+ &&
+mv A+ A &&
+git commit -q -a -m "changed" &&
+
+git checkout change+rename &&
+sed -e "/^g /s/.*/g : changed line/" <A >B &&
+rm A &&
+git update-index --add B &&
+git commit -q -a -m "changed and renamed" &&
+
 git checkout master'
 
 test_expect_success 'pull renaming branch into unrenaming one' \
@@ -318,4 +331,14 @@ test_expect_success 'interference with untracked working tree file' '
        git reset --hard anchor
 '
 
+test_expect_success 'merge of identical changes in a renamed file' '
+       rm -f A M N
+       git reset --hard &&
+       git checkout change+rename &&
+       GIT_MERGE_VERBOSITY=3 git merge change | grep "^Skipped B" &&
+       git reset --hard HEAD^ &&
+       git checkout change &&
+       GIT_MERGE_VERBOSITY=3 git merge change+rename | grep "^Skipped B"
+'
+
 test_done