1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index 7853705..3dae789 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -3788,6 +3788,14 @@ class TextIOWrapperTest(unittest.TestCase):
         t.write('x')
         t.tell()
 
+    def test_issue35928(self):
+        p = self.BufferedRWPair(self.BytesIO(b'foo\nbar\n'), self.BytesIO())
+        f = self.TextIOWrapper(p)
+        res = f.readline()
+        self.assertEqual(res, 'foo\n')
+        f.write(res)
+        self.assertEqual(res + f.readline(), 'foo\nbar\n')
+
 
 class MemviewBytesIO(io.BytesIO):
     '''A BytesIO object whose read method returns memoryviews