[PATCH v3 4/4] test: document broken merge.conflictStyle handling

[Felipe Contreras <felipe.contreras@gmail.com>]

Currently both merge.conflictStyle and --conflict=diff3 don't work
together for `git commit --merge`, since the former wrongly overrides
the later.

There is no easy way to fix this, so mark it as broken for now.

Signee-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 t/t6440-config-conflict-markers.sh | 31 ++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/t/t6440-config-conflict-markers.sh b/t/t6440-config-conflict-markers.sh
index c51512ced6..3ba993a6a8 100755
--- a/t/t6440-config-conflict-markers.sh
+++ b/t/t6440-config-conflict-markers.sh
@@ -82,4 +82,35 @@ test_expect_success 'notes' '
 	)
 '
 
+test_expect_failure 'checkout' '
+	test_create_repo checkout &&
+	(
+		test_commit checkout &&
+
+		test_write_lines a b c d e >content &&
+		git add content &&
+		git commit -m initial &&
+
+		git checkout -b simple master &&
+		test_write_lines a c e >content &&
+		git commit -a -m simple &&
+
+		test_write_lines b d >content &&
+		git checkout --merge master &&
+		! grep "^|||||||" content &&
+
+		git config merge.conflictstyle merge &&
+
+		git checkout -f simple &&
+		test_write_lines b d >content &&
+		git checkout --merge --conflict=diff3 master &&
+		grep "^|||||||" content &&
+
+		git checkout -f simple &&
+		test_write_lines b d >content &&
+		git checkout --merge --conflict=merge master &&
+		! grep "^|||||||" content
+	)
+'
+
 test_done
-- 
2.40.0+fc1