t6036: Test index and worktree state, not just that merge fails

c94736a (merge-recursive: don't segfault while handling rename clashes
2009-07-30) added this testcase with an interesting corner case test,
which previously had cased git to segfault.  This test ensures that the
segfault does not return and that the merge correctly fails; just add
some checks that verify the state of the index and worktree after the merge
are correct.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t6036-recursive-corner-cases.sh b/t/t6036-recursive-corner-cases.sh
index b8741416588e9f3d7de7c0a0359a0b8ea7cf8045..175507373586d9572cfaef015973dc774ffad808 100755 (executable)
--- a/t/t6036-recursive-corner-cases.sh
+++ b/t/t6036-recursive-corner-cases.sh
@@ -14,7 +14,7 @@ test_description='recursive merge corner cases'
 #  R1  R2
 #
 
-test_expect_success setup '
+test_expect_success 'setup basic criss-cross + rename with no modifications' '
        ten="0 1 2 3 4 5 6 7 8 9"
        for i in $ten
        do
@@ -45,11 +45,29 @@ test_expect_success setup '
        git tag R2
 '
 
-test_expect_success merge '
+test_expect_success 'merge simple rename+criss-cross with no modifications' '
        git reset --hard &&
        git checkout L2^0 &&
 
-       test_must_fail git merge -s recursive R2^0
+       test_must_fail git merge -s recursive R2^0 &&
+
+       test 5 = $(git ls-files -s | wc -l) &&
+       test 3 = $(git ls-files -u | wc -l) &&
+       test 0 = $(git ls-files -o | wc -l) &&
+
+       test $(git rev-parse :0:one) = $(git rev-parse L2:one) &&
+       test $(git rev-parse :0:two) = $(git rev-parse R2:two) &&
+       test $(git rev-parse :2:three) = $(git rev-parse L2:three) &&
+       test $(git rev-parse :3:three) = $(git rev-parse R2:three) &&
+
+       cp two merged &&
+       >empty &&
+       test_must_fail git merge-file \
+               -L "Temporary merge branch 2" \
+               -L "" \
+               -L "Temporary merge branch 1" \
+               merged empty one &&
+       test $(git rev-parse :1:three) = $(git hash-object merged)
 '
 
 test_done