from test import test_support

import unittest

import dbm

class DbmTestCase(unittest.TestCase):

    def setUp(self):

        self.filename = test_support.TESTFN

        self.d = dbm.open(self.filename, 'c')

        self.d.close()

    def tearDown(self):

        for suffix in ['', '.pag', '.dir', '.db']:

            test_support.unlink(self.filename + suffix)

    def test_keys(self):

        self.d = dbm.open(self.filename, 'c')

        self.assertEqual(self.d.keys(), [])

        a = [('a', 'b'), ('12345678910', '019237410982340912840198242')]

        for k, v in a:

            self.d[k] = v

        self.assertEqual(sorted(self.d.keys()), sorted(k for (k, v) in a))

        for k, v in a:

            self.assert_(k in self.d)

            self.assertEqual(self.d[k], v)

        self.assert_('xxx' not in self.d)

        self.assertRaises(KeyError, lambda: self.d['xxx'])

        self.d.close()

    def test_modes(self):

        for mode in ['r', 'rw', 'w', 'n']:

            try:

                self.d = dbm.open(self.filename, mode)

                self.d.close()

            except dbm.error:

                self.fail()

def test_main():

    test_support.run_unittest(DbmTestCase)

if __name__ == '__main__':

    test_main()