| import unittest |
| import os |
| from test.test_support import TESTFN, run_unittest, unlink, import_module |
| gdbm = import_module('gdbm') |
| |
| |
| filename = TESTFN |
| |
| class TestGdbm(unittest.TestCase): |
| |
| def setUp(self): |
| self.g = None |
| |
| def tearDown(self): |
| if self.g is not None: |
| self.g.close() |
| unlink(filename) |
| |
| def test_key_methods(self): |
| self.g = gdbm.open(filename, 'c') |
| self.assertEqual(self.g.keys(), []) |
| self.g['a'] = 'b' |
| self.g['12345678910'] = '019237410982340912840198242' |
| key_set = set(self.g.keys()) |
| self.assertEqual(key_set, frozenset(['a', '12345678910'])) |
| self.assertTrue(self.g.has_key('a')) |
| key = self.g.firstkey() |
| while key: |
| self.assertIn(key, key_set) |
| key_set.remove(key) |
| key = self.g.nextkey(key) |
| self.assertRaises(KeyError, lambda: self.g['xxx']) |
| |
| def test_error_conditions(self): |
| # Try to open a non-existent database. |
| unlink(filename) |
| self.assertRaises(gdbm.error, gdbm.open, filename, 'r') |
| # Try to access a closed database. |
| self.g = gdbm.open(filename, 'c') |
| self.g.close() |
| self.assertRaises(gdbm.error, lambda: self.g['a']) |
| # try pass an invalid open flag |
| self.assertRaises(gdbm.error, lambda: gdbm.open(filename, 'rx').close()) |
| |
| def test_flags(self): |
| # Test the flag parameter open() by trying all supported flag modes. |
| all = set(gdbm.open_flags) |
| # Test standard flags (presumably "crwn"). |
| modes = all - set('fsu') |
| for mode in sorted(modes): |
| self.g = gdbm.open(filename, mode) |
| self.g.close() |
| |
| # Test additional flags (presumably "fsu"). |
| flags = all - set('crwn') |
| for mode in modes: |
| for flag in flags: |
| self.g = gdbm.open(filename, mode + flag) |
| self.g.close() |
| |
| def test_reorganize(self): |
| self.g = gdbm.open(filename, 'c') |
| size0 = os.path.getsize(filename) |
| |
| self.g['x'] = 'x' * 10000 |
| size1 = os.path.getsize(filename) |
| self.assertTrue(size0 < size1) |
| |
| del self.g['x'] |
| # 'size' is supposed to be the same even after deleting an entry. |
| self.assertEqual(os.path.getsize(filename), size1) |
| |
| self.g.reorganize() |
| size2 = os.path.getsize(filename) |
| self.assertTrue(size1 > size2 >= size0) |
| |
| |
| def test_main(): |
| run_unittest(TestGdbm) |
| |
| if __name__ == '__main__': |
| test_main() |
