X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/f1813e31b6deed0901c8a7fb1f102b9af53de351..add161b367a0d5a3cc395ec8e045f7b965edaef8:/tests/test_trans.py

diff --git a/tests/test_trans.py b/tests/test_trans.py
index a1666a9..784e852 100644
--- a/tests/test_trans.py
+++ b/tests/test_trans.py
@@ -1,4 +1,5 @@
 from typing import List, Tuple
+
 from black.trans import iter_fexpr_spans
 
 
@@ -12,7 +13,7 @@ def test_fexpr_spans() -> None:
         # a glance than only spans
         assert len(spans) == len(expected_slices)
         for (i, j), slice in zip(spans, expected_slices):
-            assert len(string[i:j]) == j - i
+            assert 0 <= i <= j <= len(string)
             assert string[i:j] == slice
 
         assert spans == expected_spans