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.. image:: https://raw.githubusercontent.com/ClearcodeHQ/pytest-mysql/master/logo.png :width: 100px :height: 100px
.. image:: https://img.shields.io/pypi/v/pytest-mysql.svg :target: https://pypi.python.org/pypi/pytest-mysql/ :alt: Latest PyPI version
.. image:: https://img.shields.io/pypi/wheel/pytest-mysql.svg :target: https://pypi.python.org/pypi/pytest-mysql/ :alt: Wheel Status
.. image:: https://img.shields.io/pypi/pyversions/pytest-mysql.svg :target: https://pypi.python.org/pypi/pytest-mysql/ :alt: Supported Python Versions
.. image:: https://img.shields.io/pypi/l/pytest-mysql.svg :target: https://pypi.python.org/pypi/pytest-mysql/ :alt: License
This is a pytest plugin, that enables you to test your code that relies on a running MySQL Database. It allows you to specify fixtures for MySQL process and client.
.. warning::
Only MySQL 5.7.6 and up are supported. For older versions, please use pytest-mysql 2.0.3
Although Pull Request to add back support for older MySQL versions are welcome.
Plugin contains two fixtures
Simply include one of these fixtures into your tests fixture list.
You can also create additional mysql client and process fixtures if you'd need to:
.. code-block:: python
from pytest_mysql import factories
from getpass import getuser()
mysql_my_proc = factories.mysql_proc(
port=None, user=getuser())
mysql_my = factories.mysql('mysql_my_proc')
.. note::
Each MySQL process fixture can be configured in a different way than the others through the fixture factory arguments.
You can define your settings in three ways, it's fixture factory argument, command line option and pytest.ini configuration option. You can pick which you prefer, but remember that these settings are handled in the following order:
* ``Fixture factory argument``
* ``Command line option``
* ``Configuration option in your pytest.ini file``
.. list-table:: Configuration options :header-rows: 1
Example usage:
pass it as an argument in your own fixture
.. code-block:: python
mysql_proc = factories.mysql_proc(
port=8888)
use --mysql-port
command line option when you run your tests
.. code-block::
py.test tests --mysql-port=8888
specify your port as mysql_port
in your pytest.ini
file.
To do so, put a line like the following under the [pytest]
section of your pytest.ini
:
.. code-block:: ini
[pytest]
mysql_port = 8888
With SQLAlchemy +++++++++++++++
This example shows how to populate database and create an SQLAlchemy's ORM connection:
Sample below is simplified session fixture from
pyramid_fullauth <https://github.com/fizyk/pyramid_fullauth/>
_ tests:
.. code-block:: python
from sqlalchemy import create_engine
from sqlalchemy.orm import scoped_session, sessionmaker
from sqlalchemy.pool import NullPool
from zope.sqlalchemy import register
@pytest.fixture
def db_session(mysql):
"""Session for SQLAlchemy."""
from pyramid_fullauth.models import Base # pylint:disable=import-outside-toplevel
# assumes setting, these can be obtained from pytest-mysql config or mysql_proc
connection = f'mysql+mysqldb://root:@127.0.0.1:3307/tests?charset=utf8'
engine = create_engine(connection, echo=False, poolclass=NullPool)
pyramid_basemodel.Session = scoped_session(sessionmaker(extension=ZopeTransactionExtension()))
pyramid_basemodel.bind_engine(
engine, pyramid_basemodel.Session, should_create=True, should_drop=True)
yield pyramid_basemodel.Session
transaction.commit()
Base.metadata.drop_all(engine)
@pytest.fixture
def user(db_session):
"""Test user fixture."""
from pyramid_fullauth.models import User
from tests.tools import DEFAULT_USER
new_user = User(**DEFAULT_USER)
db_session.add(new_user)
transaction.commit()
return new_user
def test_remove_last_admin(db_session, user):
"""
Sample test checks internal login, but shows usage in tests with SQLAlchemy
"""
user = db_session.merge(user)
user.is_admin = True
transaction.commit()
user = db_session.merge(user)
with pytest.raises(AttributeError):
user.is_admin = False
.. note::
See the original code at `pyramid_fullauth's conftest file <https://github.com/fizyk/pyramid_fullauth/blob/2950e7f4a397b313aaf306d6d1a763ab7d8abf2b/tests/conftest.py#L35>`_.
Depending on your needs, that in between code can fire alembic migrations in case of sqlalchemy stack or any other code
To connect to a docker run MySQL and run test on it, use noproc fixtures.
.. code-block:: sh
docker run --name some-db -e MYSQL_ALLOW_EMPTY_PASSWORD=yes -d mysql --expose 3306
.. code-block:: sh
docker run --name some-db -e MARIADB_ALLOW_EMPTY_PASSWORD=yes -d mariadb --expose 3306
This will start MySQL in a docker container, however using a MySQL installed locally is not much different.
In tests, make sure that all your tests are using mysql_noproc fixture like that:
.. code-block:: python
mysql_in_docker = factories.mysql_noproc()
mysql = factories.mysql("mysql_in_docker")
def test_mysql_docker(mysql):
"""Run test."""
cur = mysql.cursor()
cur.query("CREATE TABLE pet (name VARCHAR(20), owner VARCHAR(20), species VARCHAR(20), sex CHAR(1), birth DATE, death DATE);")
mysql.commit()
cur.close()
And run tests:
.. code-block:: sh
pytest --mysql-host=127.0.0.1
Unfortunately, running MySQL as root (thus by default on docker) is not possible. MySQL (and MariaDB as well) will not allow it.
.. code-block::
USER nobody
This line should switch your docker process to run on user nobody. See this comment for example <https://github.com/ClearcodeHQ/pytest-mysql/issues/62#issuecomment-367975723>
_
Install pipenv and --dev dependencies first, Then run:
.. code-block::
pipenv run tbump [NEW_VERSION]
FAQs
MySQL process and client fixtures for pytest
We found that pytest-mysql demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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