Add a new test for git-merge-resolve

Actually this is a simple test, just to ensure merge-resolve properly
calls read-tree. read-tree itself already has more complex tests.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t7605-merge-resolve.sh b/t/t7605-merge-resolve.sh
new file mode 100755 (executable)
index 0000000..ee21a10
--- /dev/null
+++ b/t/t7605-merge-resolve.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+
+test_description='git-merge
+
+Testing the resolve strategy.'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+       echo c0 > c0.c &&
+       git add c0.c &&
+       git commit -m c0 &&
+       git tag c0 &&
+       echo c1 > c1.c &&
+       git add c1.c &&
+       git commit -m c1 &&
+       git tag c1 &&
+       git reset --hard c0 &&
+       echo c2 > c2.c &&
+       git add c2.c &&
+       git commit -m c2 &&
+       git tag c2 &&
+       git reset --hard c0 &&
+       echo c3 > c2.c &&
+       git add c2.c &&
+       git commit -m c3 &&
+       git tag c3
+'
+
+test_expect_success 'merge c1 to c2' '
+       git reset --hard c1 &&
+       git merge -s resolve c2 &&
+       test "$(git rev-parse c1)" != "$(git rev-parse HEAD)" &&
+       test "$(git rev-parse c1)" = "$(git rev-parse HEAD^1)" &&
+       test "$(git rev-parse c2)" = "$(git rev-parse HEAD^2)" &&
+       git diff --exit-code &&
+       test -f c0.c &&
+       test -f c1.c &&
+       test -f c2.c
+'
+
+test_expect_success 'merge c2 to c3 (fails)' '
+       git reset --hard c2 &&
+       test_must_fail git merge -s resolve c3
+'
+test_done