bpo-37840: Fix handling of negative indices in bytearray_getitem() (GH-15250)
diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py
index b5eeb2b..ddcf367 100644
--- a/Lib/test/test_bytes.py
+++ b/Lib/test/test_bytes.py
@@ -962,6 +962,15 @@
c = b.translate(None, delete=b'e')
self.assertEqual(c, b'hllo')
+ def test_sq_item(self):
+ _testcapi = test.support.import_module('_testcapi')
+ obj = self.type2test((42,))
+ with self.assertRaises(IndexError):
+ _testcapi.sequence_getitem(obj, -2)
+ with self.assertRaises(IndexError):
+ _testcapi.sequence_getitem(obj, 1)
+ self.assertEqual(_testcapi.sequence_getitem(obj, 0), 42)
+
class BytesTest(BaseBytesTest, unittest.TestCase):
type2test = bytes