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automatically setups a mysqld instance in a temporary directory, and destroys it after testing

Project description

testing.mysqld automatically setups a mysqld instance in a temporary directory, and destroys it after testing CI build status Latest PyPI version Number of PyPI downloads


Use easy_install (or pip):

$ easy_install testing.mysqld

And testing.mysqld requires MySQL server in your PATH.


Create MySQL instance using testing.mysqld.Mysqld:

import testing.mysqld
from sqlalchemy import create_engine

# Lanuch new MySQL server
with testing.mysqld.Mysqld() as mysqld:
    # connect to MySQL
    engine = create_engine(mysqld.url())

    # if you use mysqldb or other drivers:
    #   import _mysql
    #   db = _mysql.connect(**mysqld.dsn())

    # do any tests using MySQL...

# MySQL server is terminated here

testing.mysqld.Mysqld executes mysql_install_db and mysqld on instantiation. On deleting Mysqld object, it terminates MySQL instance and removes temporary directory.

If you want a database including tables and any fixtures for your apps, use copy_data_from keyword:

# uses a copy of specified data directory of MySQL.
mysqld = testing.mysqld.Mysqld(copy_data_from='/path/to/your/database')

You can specify parameters for MySQL with my_cnf keyword:

# boot MySQL server without socket listener (use unix-domain socket)
mysqld = testing.mysqld.Mysqld(my_cnf={'skip-networking': None})

For example, you can setup new MySQL server for each testcases on setUp() method:

import unittest
import testing.mysqld

class MyTestCase(unittest.TestCase):
    def setUp(self):
        self.mysqld = testing.mysqld.Mysqld(my_cnf={'skip-networking': None})

    def tearDown(self):


  • Python 2.6, 2.7, 3.2, 3.3, 3.4
  • pymysql


Apache License 2.0


1.2.6 (2014-06-19)

  • Add timeout on terminating mysqld
  • Fix bugs

1.2.5 (2014-06-11)

  • Fix ImportError if caught SIGINT on py3

1.2.4 (2014-02-13)

  • Fix testing.mysqld.Mysqld#start() fails if mysql_install_db does not create database named “test”

1.2.3 (2013-12-11)

  • Use pymysql driver as default in Mysqld#url()

1.2.2 (2013-12-06)

  • Change behavior: Mysqld#stop() cleans workdir
  • Fix caught AttributeError on object deletion

1.2.1 (2013-12-05)

  • Add mysqld.skipIfNotInstalled decorator (alias of skipIfNotFound)
  • Suport python 2.6 and 3.2

1.2.0 (2013-12-04)

  • Add @skipIfNotFound decorator

1.1.2 (2013-11-26)

  • Fix it does not cleanup temporary directory if Mysqld object has been deleted

1.1.1 (2013-11-25)

  • Add charset parameter to Mysqld#url()

1.1.0 (2013-11-22)

  • Rename package: test.mysqld -> testing.mysqld
  • Add Mysqld#url() method (for sqlalchemy)

1.0.0 (2013-10-17)

  • First release

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