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-rw-r--r--Lib/test/test_builtin.py9
1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 42c55cc..111090c 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -1829,6 +1829,15 @@ class BuiltinTest(unittest.TestCase):
return i
self.assertRaises(ValueError, list, zip(BadSeq(), BadSeq()))
+ def test_bin(self):
+ self.assertEqual(bin(0), '0b0')
+ self.assertEqual(bin(1), '0b1')
+ self.assertEqual(bin(-1), '-0b1')
+ self.assertEqual(bin(2**65), '0b1' + '0' * 65)
+ self.assertEqual(bin(2**65-1), '0b' + '1' * 65)
+ self.assertEqual(bin(-(2**65)), '-0b1' + '0' * 65)
+ self.assertEqual(bin(-(2**65-1)), '-0b' + '1' * 65)
+
class TestSorted(unittest.TestCase):
def test_basic(self):