[PATCH 5/7] t5520: test --rebase with multiple branches

[Paul Tan <pyokagan@gmail.com>]

Since rebasing on top of multiple upstream branches does not make sense,
since commit 51b2ead0 ("disallow providing multiple upstream branches
to rebase, pull --rebase"), git-pull explicitly disallowed specifying
multiple branches in the rebase case.

Implement tests to ensure that git-pull fails and prints out the
user-friendly error message in such a case.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
---
 t/t5520-pull.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/t/t5520-pull.sh b/t/t5520-pull.sh
index 25d519d..17c63ff 100755
--- a/t/t5520-pull.sh
+++ b/t/t5520-pull.sh
@@ -223,6 +223,14 @@ test_expect_success '--rebase' '
 	test $(git rev-parse HEAD^) = $(git rev-parse copy) &&
 	test new = $(git show HEAD:file2)
 '
+
+test_expect_success '--rebase fails with multiple branches' '
+	git reset --hard before-rebase &&
+	test_must_fail git pull --rebase . copy master 2>out &&
+	test_when_finished "rm -f out" &&
+	test_i18ngrep "Cannot rebase onto multiple branches" out
+'
+
 test_expect_success 'pull.rebase' '
 	git reset --hard before-rebase &&
 	test_config pull.rebase true &&
-- 
2.1.4