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"""Misc generator expression tests
Made for Jython.
"""
import unittest
from test import test_support
locals_test = list(local for local in locals() if not local.startswith('_'))
class GeneratorExpressionsTestCase(unittest.TestCase):
def test_module_level_locals(self):
# NOTE: The locals_test genexp used to cause a 'dictionary
# changed size during iteration' RuntimeError. If we've gotten
# this far we've already passed
self.assert_(sorted(locals_test) == ['test_support', 'unittest'])
#http://bugs.jython.org/issue1205 applied to genexps.
def test_long_genexp(self):
#for a long genexp, we compute the Hardy-Ramanujan number
#http://en.wikipedia.org/wiki/1729_(number)
res = ((x1**3+x2**3,(x1,x2),(y1,y2))
for x1 in range(20) for x2 in range(20) if x1 < x2 # x-Paare
for y1 in range(20) for y2 in range(20) if y1 < y2 # y-Paare
if x1**3+x2**3 == y1**3+y2**3 # gleiche Summe
if (x1,x2) < (y1,y2)
)
self.assertEquals(1729, res.next()[0])
def test_main():
test_support.run_unittest(GeneratorExpressionsTestCase)
if __name__ == '__main__':
test_main()
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