X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/7e1c5b2ba6355f1a6916cf5545dc577cf2e6c727..728c56c986bc5aea4d9897d3fce3159f89991b8e:/tests/test_black.py

diff --git a/tests/test_black.py b/tests/test_black.py
index e512832..759bda5 100644
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -17,6 +17,7 @@ ff = partial(black.format_file_in_place, line_length=ll, fast=True)
 fs = partial(black.format_str, line_length=ll)
 THIS_FILE = Path(__file__)
 THIS_DIR = THIS_FILE.parent
+EMPTY_LINE = '# EMPTY LINE WITH WHITESPACE' + ' (this comment will be removed)'
 
 
 def dump_to_stderr(*output: str) -> str:
@@ -33,6 +34,7 @@ def read_data(name: str) -> Tuple[str, str]:
         lines = test.readlines()
     result = _input
     for line in lines:
+        line = line.replace(EMPTY_LINE, '')
         if line.rstrip() == '# output':
             result = _output
             continue
@@ -188,6 +190,14 @@ 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_fmtonoff(self) -> None:
+        source, expected = read_data('fmtonoff')
+        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 = []