X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/92957a41e3f909c7b813b448f65cd437cf0139f2..2d9eaafa97e967c8974a6321dcc442a90192140f:/tests/test_black.py?ds=inline

diff --git a/tests/test_black.py b/tests/test_black.py
index 94cbe35..5e17faf 100644
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -229,6 +229,14 @@ 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_slices(self) -> None:
+        source, expected = read_data("slices")
+        actual = fs(source)
+        self.assertFormatEqual(expected, actual)
+        black.assert_equivalent(source, actual)
+        black.assert_stable(source, actual, line_length=ll)
+
     @patch("black.dump_to_file", dump_to_stderr)
     def test_comments(self) -> None:
         source, expected = read_data("comments")
@@ -628,6 +636,12 @@ class BlackTestCase(unittest.TestCase):
             )
             self.assertEqual(result.exit_code, 1)
 
+    def test_no_files(self) -> None:
+        with cache_dir():
+            # Without an argument, black exits with error code 0.
+            result = CliRunner().invoke(black.main, [])
+            self.assertEqual(result.exit_code, 0)
+
     def test_read_cache_line_lengths(self) -> None:
         with cache_dir() as workspace:
             path = (workspace / "file.py").resolve()