import os, string

import unittest

from test_all import db, dbobj, test_support, get_new_environment_path, \

        get_new_database_path

#----------------------------------------------------------------------

class dbobjTestCase(unittest.TestCase):

    """Verify that dbobj.DB and dbobj.DBEnv work properly"""

    db_name = 'test-dbobj.db'

    def setUp(self):

        self.homeDir = get_new_environment_path()

    def tearDown(self):

        if hasattr(self, 'db'):

            del self.db

        if hasattr(self, 'env'):

            del self.env

        test_support.rmtree(self.homeDir)

    def test01_both(self):

        class TestDBEnv(dbobj.DBEnv): pass

        class TestDB(dbobj.DB):

            def put(self, key, *args, **kwargs):

                key = key.upper()

                # call our parent classes put method with an upper case key

                return apply(dbobj.DB.put, (self, key) + args, kwargs)

        self.env = TestDBEnv()

        self.env.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL)

        self.db = TestDB(self.env)

        self.db.open(self.db_name, db.DB_HASH, db.DB_CREATE)

        self.db.put('spam', 'eggs')

        self.assertEqual(self.db.get('spam'), None,

               "overridden dbobj.DB.put() method failed [1]")

        self.assertEqual(self.db.get('SPAM'), 'eggs',

               "overridden dbobj.DB.put() method failed [2]")

        self.db.close()

        self.env.close()

    def test02_dbobj_dict_interface(self):

        self.env = dbobj.DBEnv()

        self.env.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL)

        self.db = dbobj.DB(self.env)

        self.db.open(self.db_name+'02', db.DB_HASH, db.DB_CREATE)

        # __setitem__

        self.db['spam'] = 'eggs'

        # __len__

        self.assertEqual(len(self.db), 1)

        # __getitem__

        self.assertEqual(self.db['spam'], 'eggs')

        # __del__

        del self.db['spam']

        self.assertEqual(self.db.get('spam'), None, "dbobj __del__ failed")

        self.db.close()

        self.env.close()

    def test03_dbobj_type_before_open(self):

        # Ensure this doesn't cause a segfault.

        self.assertRaises(db.DBInvalidArgError, db.DB().type)

#----------------------------------------------------------------------

def test_suite():

    return unittest.makeSuite(dbobjTestCase)

if __name__ == '__main__':

    unittest.main(defaultTest='test_suite')