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-rw-r--r--Lib/test/test_csv.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/test/test_csv.py b/Lib/test/test_csv.py
index a3c0843..ed10ed7 100644
--- a/Lib/test/test_csv.py
+++ b/Lib/test/test_csv.py
@@ -32,6 +32,8 @@ class Test_Csv(unittest.TestCase):
self.assertRaises(TypeError, ctor, arg, quoting=None)
self.assertRaises(TypeError, ctor, arg,
quoting=csv.QUOTE_ALL, quotechar='')
+ self.assertRaises(TypeError, ctor, arg,
+ quoting=csv.QUOTE_ALL, quotechar=None)
def test_reader_arg_valid(self):
self._test_arg_valid(csv.reader, [])