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Code Issues Projects Releases Packages Wiki Activity Actions 13

bpo-28876: bool of large range raises OverflowError (#699) (#734)

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(cherry picked from commit e46fb86118)
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Serhiy Storchaka 2017-03-20 09:13:47 +02:00 • committed by GitHub
parent d1f566f6bd
commit 6fad4090ec
3 changed files with 27 additions and 5 deletions
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17
Lib/test/test_range.py
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@ -99,20 +99,24 @@ class RangeTest(unittest.TestCase):
x = range(10**20+10, 10**20, 3)
self.assertEqual(len(x), 0)
self.assertEqual(len(list(x)), 0)
self.assertFalse(x)
x = range(10**20, 10**20+10, -3)
self.assertEqual(len(x), 0)
self.assertEqual(len(list(x)), 0)
self.assertFalse(x)
x = range(10**20+10, 10**20, -3)
self.assertEqual(len(x), 4)
self.assertEqual(len(list(x)), 4)
self.assertTrue(x)
# Now test range() with longs
self.assertEqual(list(range(-2**100)), [])
self.assertEqual(list(range(0, -2**100)), [])
self.assertEqual(list(range(0, 2**100, -1)), [])
self.assertEqual(list(range(0, 2**100, -1)), [])
for x in [range(-2**100),
range(0, -2**100),
range(0, 2**100, -1)]:
self.assertEqual(list(x), [])
self.assertFalse(x)
a = int(10 * sys.maxsize)
b = int(100 * sys.maxsize)
@ -153,6 +157,7 @@ class RangeTest(unittest.TestCase):
step = x[1] - x[0]
length = 1 + ((x[-1] - x[0]) // step)
return length
a = -sys.maxsize
b = sys.maxsize
expected_len = b - a
@ -160,6 +165,7 @@ class RangeTest(unittest.TestCase):
self.assertIn(a, x)
self.assertNotIn(b, x)
self.assertRaises(OverflowError, len, x)
self.assertTrue(x)
self.assertEqual(_range_len(x), expected_len)
self.assertEqual(x[0], a)
idx = sys.maxsize+1
@ -177,6 +183,7 @@ class RangeTest(unittest.TestCase):
self.assertIn(a, x)
self.assertNotIn(b, x)
self.assertRaises(OverflowError, len, x)
self.assertTrue(x)
self.assertEqual(_range_len(x), expected_len)
self.assertEqual(x[0], a)
idx = sys.maxsize+1
@ -195,6 +202,7 @@ class RangeTest(unittest.TestCase):
self.assertIn(a, x)
self.assertNotIn(b, x)
self.assertRaises(OverflowError, len, x)
self.assertTrue(x)
self.assertEqual(_range_len(x), expected_len)
self.assertEqual(x[0], a)
idx = sys.maxsize+1
@ -213,6 +221,7 @@ class RangeTest(unittest.TestCase):
self.assertIn(a, x)
self.assertNotIn(b, x)
self.assertRaises(OverflowError, len, x)
self.assertTrue(x)
self.assertEqual(_range_len(x), expected_len)
self.assertEqual(x[0], a)
idx = sys.maxsize+1