Package: testing.mysqld
testing.mysqldautomatically setups a mysqld instance in a temporary directory, and destroys it after testingInstallUse easy_install (or pip):$ easy_install testing.mysqldAndtesting.mysqldrequires MySQL server in your PATH.UsageCreate MySQL instance usingtesting.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 heretesting.mysqld.Mysqldexecutesmysql_install_dbandmysqldon 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,
usecopy_data_fromkeyword:# 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 withmy_cnfkeyword:# 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):
        self.mysqld.stop()To make your tests fastertesting.mysqld.Mysqldinvokesinitdbcommand 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, usetesting.mysqld.MysqldFactory.
The factory class is able to cache the generated database beyond the testcases,
and it reduces the number of invocation ofmysql_install_dbcommand: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
    Mysqld.clear_cache()


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

    def tearDown(self):
        self.mysqld.stop()If you want to insert fixtures to the cached database, useinitdb_handleroption:# 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')")
    cursor.close()
    conn.commit()
    conn.close()

# Use `handler()` on initialize database
Mysqld = testing.mysqld.MysqldFactory(cache_initialized_db=True,
                                      on_initialized=handler)RequirementsPython 2.7, 3.3, 3.4, 3.5pymysqlLicenseApache License 2.0History1.4.0 (2016-08-20)Drop py26, py32 supportAllowuserandpasswordargument to connect authorized databaseDepend on testing.common.database >= 2.0.01.3.0 (2016-02-03)Add timeout to server invokerSupport MySQL-5.7Add testing.mysqld.MysqldFactoryDepend ontesting.common.databasepackageAssign port if networking not disabled1.2.8 (2015-04-06)Fix bugs1.2.7 (2014-12-20)Support for relative mysql_install_db linksUse absolute path for which command1.2.6 (2014-06-19)Add timeout on terminating mysqldFix bugs1.2.5 (2014-06-11)Fix ImportError if caught SIGINT on py31.2.4 (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 workdirFix caught AttributeError on object deletion1.2.1 (2013-12-05)Add mysqld.skipIfNotInstalled decorator (alias of skipIfNotFound)Suport python 2.6 and 3.21.2.0 (2013-12-04)Add @skipIfNotFound decorator1.1.2 (2013-11-26)Fix it does not cleanup temporary directory if Mysqld object has been deleted1.1.1 (2013-11-25)Add charset parameter to Mysqld#url()1.1.0 (2013-11-22)Rename package: test.mysqld -> testing.mysqldAdd Mysqld#url() method (for sqlalchemy)1.0.0 (2013-10-17)First release