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      1 
      2 import os
      3 import pickle
      4 import sys
      5 
      6 if sys.version_info[0] < 3 :
      7     try:
      8         import cPickle
      9     except ImportError:
     10         cPickle = None
     11 else :
     12     cPickle = None
     13 
     14 import unittest
     15 
     16 from test_all import db, test_support, get_new_environment_path, get_new_database_path
     17 
     18 #----------------------------------------------------------------------
     19 
     20 class pickleTestCase(unittest.TestCase):
     21     """Verify that DBError can be pickled and unpickled"""
     22     db_name = 'test-dbobj.db'
     23 
     24     def setUp(self):
     25         self.homeDir = get_new_environment_path()
     26 
     27     def tearDown(self):
     28         if hasattr(self, 'db'):
     29             del self.db
     30         if hasattr(self, 'env'):
     31             del self.env
     32         test_support.rmtree(self.homeDir)
     33 
     34     def _base_test_pickle_DBError(self, pickle):
     35         self.env = db.DBEnv()
     36         self.env.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL)
     37         self.db = db.DB(self.env)
     38         self.db.open(self.db_name, db.DB_HASH, db.DB_CREATE)
     39         self.db.put('spam', 'eggs')
     40         self.assertEqual(self.db['spam'], 'eggs')
     41         try:
     42             self.db.put('spam', 'ham', flags=db.DB_NOOVERWRITE)
     43         except db.DBError, egg:
     44             pickledEgg = pickle.dumps(egg)
     45             #print repr(pickledEgg)
     46             rottenEgg = pickle.loads(pickledEgg)
     47             if rottenEgg.args != egg.args or type(rottenEgg) != type(egg):
     48                 raise Exception, (rottenEgg, '!=', egg)
     49         else:
     50             raise Exception, "where's my DBError exception?!?"
     51 
     52         self.db.close()
     53         self.env.close()
     54 
     55     def test01_pickle_DBError(self):
     56         self._base_test_pickle_DBError(pickle=pickle)
     57 
     58     if cPickle:
     59         def test02_cPickle_DBError(self):
     60             self._base_test_pickle_DBError(pickle=cPickle)
     61 
     62 #----------------------------------------------------------------------
     63 
     64 def test_suite():
     65     return unittest.makeSuite(pickleTestCase)
     66 
     67 if __name__ == '__main__':
     68     unittest.main(defaultTest='test_suite')
     69