import unittest

from unittest.mock import patch, Mock

from prometheus_pgbouncer_exporter import utils

class ConnectionTest(unittest.TestCase):

    @patch('prometheus_pgbouncer_exporter.utils.psycopg2.connect')
    def test_get_connection_with_host_and_dbname(self, connect):
        conn = utils.get_connection(host='/tmp/', dbname='template1')
        connect.assert_called_once_with(host='/tmp/', dbname='template1')
        connect.return_value.set_session.assert_called_once_with(autocommit=True)

    @patch('prometheus_pgbouncer_exporter.utils.psycopg2.connect')
    def test_get_connection_with_old_args_plus_password_works(self, connect):
        conn = utils.get_connection(user='pablo', port=5432, host='localhost', password='mypassword')
        connect.assert_called_once_with(dbname='pgbouncer', user='pablo', port=5432, host='localhost', password='mypassword')