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"""module contains test for db_utils"""
from unittest import TestCase
from unittest import mock
from types import SimpleNamespace
from gn3.db_utils import database_connector
from gn3.db_utils import parse_db_url
class TestDatabase(TestCase):
"""class contains testd for db connection functions"""
@mock.patch("gn3.db_utils.mdb")
@mock.patch("gn3.db_utils.parse_db_url")
def test_database_connector(self, mock_db_parser, mock_sql):
"""test for creating database connection"""
mock_db_parser.return_value = ("localhost", "guest", "4321", "users")
callable_cursor = lambda: SimpleNamespace(execute=3)
cursor_object = SimpleNamespace(cursor=callable_cursor)
mock_sql.connect.return_value = cursor_object
mock_sql.close.return_value = None
results = database_connector()
mock_sql.connect.assert_called_with(
"localhost", "guest", "4321", "users")
self.assertIsInstance(
results, tuple, "database not created successfully")
@mock.patch("gn3.db_utils.SQL_URI",
"mysql://username:4321@localhost/test")
def test_parse_db_url(self):
"""test for parsing db_uri env variable"""
results = parse_db_url()
expected_results = ("localhost", "username", "4321", "test")
self.assertEqual(results, expected_results)
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