merge-recursive: demonstrate an incorrect conflict with submodule

When one side of a merge turns a directory into a submodule, and the other
side does not touch that directory (but has other non-conflicting changes),
then a merge should succeed. But currently, it does not; it rather fails
with a file/directory conflict.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t3030-merge-recursive.sh b/t/t3030-merge-recursive.sh
index 9929f82021deeb20358016b487400b80e27b596f..d541544537d47587abad8d27565cf9197387cfd6 100755 (executable)
--- a/t/t3030-merge-recursive.sh
+++ b/t/t3030-merge-recursive.sh
@@ -22,6 +22,7 @@ test_expect_success 'setup 1' '
        git branch df-2 &&
        git branch df-3 &&
        git branch remove &&
+       git branch submod &&
 
        echo hello >>a &&
        cp a d/e &&
@@ -236,6 +237,17 @@ test_expect_success 'setup 6' '
        test_cmp expected actual
 '
 
+test_expect_success 'setup 7' '
+
+       git checkout submod &&
+       git rm d/e &&
+       test_tick &&
+       git commit -m "remove d/e" &&
+       git update-index --add --cacheinfo 160000 $c1 d &&
+       test_tick &&
+       git commit -m "make d/ a submodule"
+'
+
 test_expect_success 'merge-recursive simple' '
 
        rm -fr [abcd] &&
@@ -551,4 +563,21 @@ test_expect_success 'merge removes empty directories' '
        test_must_fail test -d d
 '
 
+test_expect_failure 'merge-recursive simple w/submodule' '
+
+       git checkout submod &&
+       git merge remove
+'
+
+test_expect_failure 'merge-recursive simple w/submodule result' '
+
+       git ls-files -s >actual &&
+       (
+               echo "100644 $o5 0      a"
+               echo "100644 $o0 0      c"
+               echo "160000 $c1 0      d"
+       ) >expected &&
+       test_cmp expected actual
+'
+
 test_done