X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/10d8976a79f5a7f7e5e36369a81d9e5c983332d1..e911c79809c4fd9b0773dea5b6a0e710b59614cf:/tests/test_black.py

diff --git a/tests/test_black.py b/tests/test_black.py
index 225ece6..ee883ec 100644
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -171,6 +171,14 @@ class BlackTestCase(unittest.TestCase):
         black.assert_equivalent(source, actual)
         black.assert_stable(source, actual, line_length=ll)
 
+    @patch("black.dump_to_file", dump_to_stderr)
+    def test_empty_lines(self) -> None:
+        source, expected = read_data('empty_lines')
+        actual = fs(source)
+        self.assertFormatEqual(expected, actual)
+        black.assert_equivalent(source, actual)
+        black.assert_stable(source, actual, line_length=ll)
+
     def test_report(self) -> None:
         report = black.Report()
         out_lines = []