t/t2021-checkout-last: "checkout -" should work after a rebase finishes

  $ git checkout -

does not work as expected after a rebase.  This is because the
reflog records "checkout" made by "rebase" as its implementation
detail the same way as end-user initiated "checkout", and makes it
count as the branch that was previously checked out.

Add four failing tests documenting this bug: two for a normal rebase,
and another two for an interactive rebase.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t2012-checkout-last.sh b/t/t2012-checkout-last.sh
index b44de9dc623fc923941b61719f445170602e21be..6ad6edf0f9a9ff5ff0500ff3e46ebdc443c0e2d9 100755 (executable)
--- a/t/t2012-checkout-last.sh
+++ b/t/t2012-checkout-last.sh
@@ -116,4 +116,38 @@ test_expect_success 'master...' '
        test "z$(git rev-parse --verify HEAD)" = "z$(git rev-parse --verify master^)"
 '
 
+test_expect_failure '"checkout -" works after a rebase A' '
+       git checkout master &&
+       git checkout other &&
+       git rebase master &&
+       git checkout - &&
+       test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master"
+'
+
+test_expect_failure '"checkout -" works after a rebase A B' '
+       git branch moodle master~1 &&
+       git checkout master &&
+       git checkout other &&
+       git rebase master moodle &&
+       git checkout - &&
+       test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master"
+'
+
+test_expect_failure '"checkout -" works after a rebase -i A' '
+       git checkout master &&
+       git checkout other &&
+       git rebase -i master &&
+       git checkout - &&
+       test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master"
+'
+
+test_expect_failure '"checkout -" works after a rebase -i A B' '
+       git branch foodle master~1 &&
+       git checkout master &&
+       git checkout other &&
+       git rebase master foodle &&
+       git checkout - &&
+       test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master"
+'
+
 test_done