Lib/test/test_undocumented_details.py

   1 from test.test_support import run_unittest, have_unicode
   2 import unittest
   3 import sys
   4
   5 class TestImplementationComparisons(unittest.TestCase):
   6
   7     def test_type_comparisons(self):
   8         self.assertTrue(str < int or str > int)
   9         self.assertTrue(int <= str or int >= str)
  10         self.assertTrue(cmp(int, str) != 0)
  11         self.assertTrue(int is int)
  12         self.assertTrue(str == str)
  13         self.assertTrue(int != str)
  14
  15     def test_cell_comparisons(self):
  16         def f(x):
  17             if x:
  18                 y = 1
  19             def g():
  20                 return x
  21             def h():
  22                 return y
  23             return g, h
  24         g, h = f(0)
  25         g_cell, = g.func_closure
  26         h_cell, = h.func_closure
  27         self.assertTrue(h_cell < g_cell)
  28         self.assertTrue(g_cell >= h_cell)
  29         self.assertEqual(cmp(g_cell, h_cell), 1)
  30         self.assertTrue(g_cell is g_cell)
  31         self.assertTrue(g_cell == g_cell)
  32         self.assertTrue(h_cell == h_cell)
  33         self.assertTrue(g_cell != h_cell)
  34
  35 def test_main():
  36     run_unittest(TestImplementationComparisons)
  37
  38 if __name__ == '__main__':
  39     test_main()