1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
# test the invariant that
# iff a==b then hash(a)==hash(b)
#
import unittest
from test import test_support
class HashEqualityTestCase(unittest.TestCase):
def same_hash(self, *objlist):
# Hash each object given and fail if
# the hash values are not all the same.
hashed = map(hash, objlist)
for h in hashed[1:]:
if h != hashed[0]:
self.fail("hashed values differ: %r" % (objlist,))
def test_numeric_literals(self):
self.same_hash(1, 1L, 1.0, 1.0+0.0j)
self.same_hash(0, 0L, 0.0, 0.0+0.0j)
self.same_hash(-1, -1L, -1.0, -1.0+0.0j)
self.same_hash(-2, -2L, -2.0, -2.0+0.0j)
def test_coerced_integers(self):
self.same_hash(int(1), long(1), float(1), complex(1),
int('1'), float('1.0'))
self.same_hash(int(-2**31), long(-2**31), float(-2**31))
self.same_hash(int(1-2**31), long(1-2**31), float(1-2**31))
self.same_hash(int(2**31-1), long(2**31-1), float(2**31-1))
# for 64-bit platforms
self.same_hash(int(2**31), long(2**31), float(2**31))
self.same_hash(int(-2**63), long(-2**63), float(-2**63))
self.same_hash(int(1-2**63), long(1-2**63))
self.same_hash(int(2**63-1), long(2**63-1))
def test_coerced_floats(self):
self.same_hash(long(1.23e300), float(1.23e300))
self.same_hash(float(0.5), complex(0.5, 0.0))
def test_main():
test_support.run_unittest(HashEqualityTestCase)
if __name__ == "__main__":
test_main()
|
