# 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)

    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()