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




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

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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):

To make your tests faster

``testing.mysqld.Mysqld`` invokes ``initdb`` command on every instantiation.
That is very simple. But, in many cases, it is very waste that generating brandnew database for each testcase.

To optimize the behavior, use ``testing.mysqld.MysqldFactory``.
The factory class is able to cache the generated database beyond the testcases,
and it reduces the number of invocation of ``mysql_install_db`` command::

  import unittest
  import testing.mysqld

  # Generate Mysqld class which shares the generated database
  Mysqld = testing.mysqld.MysqldFactory(cache_initialized_db=True)

  def tearDownModule(self):
      # clear cached database at end of tests

  class MyTestCase(unittest.TestCase):
      def setUp(self):
          # Use the generated Mysqld class instead of testing.mysqld.Mysqld
          self.mysqld = Mysqld()

      def tearDown(self):

If you want to insert fixtures to the cached database, use ``initdb_handler`` option::

  # create initial data on create as fixtures into the database
  def handler(mysqld):
      conn = psycopg2.connect(**mysqld.dsn())
      cursor = conn.cursor()
      cursor.execute("CREATE TABLE hello(id int, value varchar(256))")
      cursor.execute("INSERT INTO hello values(1, 'hello'), (2, 'ciao')")

  # Use `handler()` on initialize database
  Mysqld = testing.mysqld.MysqldFactory(cache_initialized_db=True,

* Python 2.7, 3.3, 3.4, 3.5
* pymysql

Apache License 2.0


1.4.0 (2016-08-20)
* Drop py26, py32 support
* Allow ``user`` and ``password`` argument to connect authorized database
* Depend on testing.common.database >= 2.0.0

1.3.0 (2016-02-03)
* Add timeout to server invoker
* Support MySQL-5.7
* Add testing.mysqld.MysqldFactory
* Depend on ``testing.common.database`` package
* Assign port if networking not disabled

1.2.8 (2015-04-06)
* Fix bugs

1.2.7 (2014-12-20)
* Support for relative mysql_install_db links
* Use absolute path for which command

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


Did you know?

Socket installs a GitHub app to automatically flag issues on every pull request and report the health of your dependencies. Find out what is inside your node modules and prevent malicious activity before you update the dependencies.


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