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.assert_(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.assert_(m.test(), "mutex not held")

    19             self.assert_(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.failIf(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()