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() 36
