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54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
from test import support
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support.import_module("dbm.ndbm") #skip if not supported
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import unittest
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import os
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import random
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import dbm.ndbm
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from dbm.ndbm import error
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class DbmTestCase(unittest.TestCase):
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def setUp(self):
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self.filename = support.TESTFN
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self.d = dbm.ndbm.open(self.filename, 'c')
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self.d.close()
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def tearDown(self):
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for suffix in ['', '.pag', '.dir', '.db']:
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support.unlink(self.filename + suffix)
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def test_keys(self):
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self.d = dbm.ndbm.open(self.filename, 'c')
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self.assertTrue(self.d.keys() == [])
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self.d['a'] = 'b'
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self.d[b'bytes'] = b'data'
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self.d['12345678910'] = '019237410982340912840198242'
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self.d.keys()
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self.assertIn('a', self.d)
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self.assertIn(b'a', self.d)
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self.assertEqual(self.d[b'bytes'], b'data')
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self.d.close()
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def test_modes(self):
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for mode in ['r', 'rw', 'w', 'n']:
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try:
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self.d = dbm.ndbm.open(self.filename, mode)
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self.d.close()
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except error:
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self.fail()
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def test_context_manager(self):
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with dbm.ndbm.open(self.filename, 'c') as db:
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db["ndbm context manager"] = "context manager"
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with dbm.ndbm.open(self.filename, 'r') as db:
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self.assertEqual(list(db.keys()), [b"ndbm context manager"])
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with self.assertRaises(dbm.ndbm.error) as cm:
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db.keys()
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self.assertEqual(str(cm.exception),
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"DBM object has already been closed")
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if __name__ == '__main__':
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unittest.main()
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