Showing content from http://svn.python.org/projects/python/branches/r22b2-branch/Lib/test/test_hash.py below:
# test the invariant that # iff a==b then hash(a)==hash(b) # import test_support import unittest 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: %s" % `objlist`) def test_numeric_literals(self): self.same_hash(1, 1L, 1.0, 1.0+0.0j) def test_coerced_integers(self): self.same_hash(int(1), long(1), float(1), complex(1), int('1'), float('1.0')) 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()
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