Lib/test/test_mutex.py

   1 import unittest
   2 import test.test_support
   3
   4 mutex = test.test_support.import_module("mutex", deprecated=True)
   5
   6 class MutexTest(unittest.TestCase):
   7
   8     def test_lock_and_unlock(self):
   9
  10         def called_by_mutex(some_data):
  11             self.assertEqual(some_data, "spam")
  12             self.assertTrue(m.test(), "mutex not held")
  13             # Nested locking
  14             m.lock(called_by_mutex2, "eggs")
  15
  16         def called_by_mutex2(some_data):
  17             self.assertEquals(some_data, "eggs")
  18             self.assertTrue(m.test(), "mutex not held")
  19             self.assertTrue(ready_for_2,
  20                          "called_by_mutex2 called too soon")
  21
  22         m = mutex.mutex()
  23         read_for_2 = False
  24         m.lock(called_by_mutex, "spam")
  25         ready_for_2 = True
  26         # unlock both locks
  27         m.unlock()
  28         m.unlock()
  29         self.assertFalse(m.test(), "mutex still held")
  30
  31 def test_main():
  32     test.test_support.run_unittest(MutexTest)
  33
  34 if __name__ == "__main__":
  35     test_main()