Fix test

extra_tests/snippets/builtin_slice.py

@@ -1,5 +1,4 @@
 from testutils import assert_raises
-import sys
 
 a = []
 assert a[:] == []
@@ -130,5 +129,3 @@ def test_all_slices():
 
 
 test_all_slices()
-
-assert_raises(IndexError, lambda: b[::0], _msg='bytearray index out of range')

extra_tests/snippets/bytearray.py

@@ -1,5 +1,6 @@
 from testutils import assert_raises
 import pickle
+import sys
 
 # new
 assert bytearray([1, 2, 3])
@@ -753,4 +754,8 @@ b = pickle.loads(pickle.dumps(a, 4))
 assert type(a) == type(b)
 assert a.x == b.x
 assert a.y == b.y
-assert a == b
+assert a == b
+
+a = bytearray()
+for i in range(-1, 2, 1):
+    assert_raises(IndexError, lambda: a[-sys.maxsize - i], _msg='bytearray index out of range')