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[PATCH v2 3/4] built-in rebase: demonstrate that ORIG_HEAD is not set correctly




From: Johannes Schindelin <johannes.schindelin@xxxxxx>

The ORIG_HEAD pseudo ref is supposed to refer to the original,
pre-rebase state after a successful rebase. Let's add a regression test
to prove that this regressed: With GIT_TEST_REBASE_USE_BUILTIN=false,
this test case passes, with GIT_TEST_REBASE_USE_BUILTIN=true (or unset),
it fails.

Reported by Nazri Ramliy.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 t/t3400-rebase.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh
index 3e73f7584c..7e8d5bb200 100755
--- a/t/t3400-rebase.sh
+++ b/t/t3400-rebase.sh
@@ -59,6 +59,14 @@ test_expect_success 'rebase against master' '
 	git rebase master
 '
 
+test_expect_failure 'rebase sets ORIG_HEAD to pre-rebase state' '
+	git checkout -b orig-head topic &&
+	pre="$(git rev-parse --verify HEAD)" &&
+	git rebase master &&
+	test_cmp_rev "$pre" ORIG_HEAD &&
+	! test_cmp_rev "$pre" HEAD
+'
+
 test_expect_success 'rebase, with <onto> and <upstream> specified as :/quuxery' '
 	test_when_finished "git branch -D torebase" &&
 	git checkout -b torebase my-topic-branch^ &&
-- 
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