t2025: add a test to make sure grafts is working from a linked checkout

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t2025-checkout-to.sh b/t/t2025-checkout-to.sh
index 4bd1df4899c043a768ee2a45964c458254a6ec30..eddd3251f1faede8cbfb0c9f6db501f0facfe063 100755 (executable)
--- a/t/t2025-checkout-to.sh
+++ b/t/t2025-checkout-to.sh
@@ -96,4 +96,22 @@ test_expect_success 'checkout from a bare repo without --to' '
        )
 '
 
+test_expect_success 'checkout with grafts' '
+       test_when_finished rm .git/info/grafts &&
+       test_commit abc &&
+       SHA1=`git rev-parse HEAD` &&
+       test_commit def &&
+       test_commit xyz &&
+       echo "`git rev-parse HEAD` $SHA1" >.git/info/grafts &&
+       cat >expected <<-\EOF &&
+       xyz
+       abc
+       EOF
+       git log --format=%s -2 >actual &&
+       test_cmp expected actual &&
+       git checkout --detach --to grafted master &&
+       git --git-dir=grafted/.git log --format=%s -2 >actual &&
+       test_cmp expected actual
+'
+
 test_done