X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/a82f1867875c906bedfe3ef675473b795d8b0440..0c5c5374313566dd9047c3e992a3c23a7ea4b8f2:/tests/test_black.py

diff --git a/tests/test_black.py b/tests/test_black.py
index 6eaca98..6ff5840 100644
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -410,6 +410,17 @@ 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_numeric_literals_ignoring_underscores(self) -> None:
+        source, expected = read_data("numeric_literals_skip_underscores")
+        mode = (
+            black.FileMode.PYTHON36 | black.FileMode.NO_NUMERIC_UNDERSCORE_NORMALIZATION
+        )
+        actual = fs(source, mode=mode)
+        self.assertFormatEqual(expected, actual)
+        black.assert_equivalent(source, actual)
+        black.assert_stable(source, actual, line_length=ll, mode=mode)
+
     @patch("black.dump_to_file", dump_to_stderr)
     def test_numeric_literals_py2(self) -> None:
         source, expected = read_data("numeric_literals_py2")