Metadata-Version: 2.4
Name: pytest-mysql
Version: 5.0.0
Summary: MySQL process and client fixtures for pytest
Keywords: fixture,mysql,pytest,tests
Author: Grzegorz Śliwiński
Author-email: Grzegorz Śliwiński <fizyk+pypi@fizyk.dev>
License-Expression: LGPL-3.0-or-later
License-File: COPYING.lesser
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Framework :: Pytest
Classifier: Intended Audience :: Developers
Classifier: Natural Language :: English
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Programming Language :: Python :: 3.14
Classifier: Programming Language :: Python :: 3.15
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Software Development :: Testing
Requires-Dist: mirakuru>=2.6.0
Requires-Dist: packaging>=23
Requires-Dist: port-for>=0.7.3
Requires-Dist: pymysql>=1.1.1
Requires-Dist: pytest>=8.4
Requires-Python: >=3.11
Project-URL: Source, https://github.com/dbfixtures/pytest-mysql
Project-URL: Bug Tracker, https://github.com/dbfixtures/pytest-mysql/issues
Project-URL: Changelog, https://github.com/dbfixtures/pytest-mysql/blob/v5.0.0/CHANGES.rst
Description-Content-Type: text/x-rst

.. image:: https://raw.githubusercontent.com/dbfixtures/pytest-mysql/master/logo.png
    :width: 100px
    :height: 100px

pytest-mysql
============

.. 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

What is this?
=============

A pytest plugin for tests that rely on a running MySQL or MariaDB database.
It provides process and client fixtures.

.. warning::

    Tested with MySQL 8.0+ and MariaDB 10.11+.

.. image:: https://raw.githubusercontent.com/dbfixtures/pytest-mysql/main/docs/images/architecture.svg
    :alt: Project Architecture Diagram
    :align: center

How to use
==========

The plugin contains three fixtures:

* **mysql** - a function-scoped client fixture that drops the test database after each test to ensure repeatability.
* **mysql_proc** - a session-scoped process fixture that starts a local MySQL instance on first use and stops it at the end of the test session.
* **mysql_noproc** - a session-scoped fixture that connects to an already running MySQL instance.

Simply include one of these fixtures in your test fixture list.

You can also create additional MySQL client and process fixtures if you 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.

Prerequisites
-------------

Install MySQL or MariaDB on the machine where tests are executed.
This plugin relies on binaries provided by those installations (for example ``mysqld`` and ``mysqladmin``).

Use ``mysql_proc`` to start a local MySQL process from installed binaries.
Use ``mysql_noproc`` to connect to an already running MySQL/MariaDB server.

Quickstart: first test
----------------------

Install the plugin:

.. code-block:: shell

    pip install pytest-mysql

Create a minimal test that uses the built-in fixture:

.. code-block:: python

    def test_mysql_fixture_available(mysql):
        assert mysql is not None

Run your tests:

.. code-block:: shell

    pytest -q

Configuration
=============

You can define settings in three ways: fixture factory arguments, command-line options, and ``pytest.ini`` configuration options.
These settings are applied in the following order:

    * ``Fixture factory argument``
    * ``Command-line option``
    * ``Configuration option in your pytest.ini file``

.. list-table:: Configuration options
   :header-rows: 1

   * - MySQL/MariaDB option
     - Fixture factory argument
     - Command line option
     - pytest.ini option
     - Noproc process fixture
     - Default
   * - Path to executable
     - mysqld_exec
     - --mysql-mysqld
     - mysql_mysqld
     - -
     - mysqld
   * - Path to safe executable
     - mysqld_safe
     - --mysql-mysqld-safe
     - mysql_mysqld_safe
     - -
     - mysqld_safe
   * - Path to mysql_install_db for legacy installations
     - install_db
     - --mysql-install-db
     - mysql_install_db
     - -
     - mysql_install_db
   * - Path to Admin executable
     - admin_executable
     - --mysql-admin
     - mysql_admin
     - -
     - mysqladmin
   * - Database hostname
     - host
     - --mysql-host
     - mysql_host
     - yes
     - localhost
   * - Database port
     - port
     - --mysql-port
     - mysql_port
     - yes (3306)
     - random
   * - Free port search count
     - port_search_count
     - --mysql-port-search-count
     - mysql_port_search_count
     - -
     - 5
   * - MySQL user to work with
     - user
     - --mysql-user
     - mysql_user
     - -
     - root
   * - User's password
     - passwd
     - --mysql-passwd
     - mysql_passwd
     - -
     -
   * - Test database name
     - dbname
     - --mysql-dbname
     - mysql_dbname
     - -
     - test
   * - Starting parameters
     - params
     - --mysql-params
     - mysql_params
     - -
     -


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::

        pytest 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

Examples
========

The examples below show advanced integration patterns after your first smoke test is passing.

Populating database for tests
-----------------------------

With SQLAlchemy
+++++++++++++++

This example shows how to populate the database and create an SQLAlchemy ORM connection:

The sample below is a 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

Connecting to MySQL/MariaDB (in a docker)
-----------------------------------------

To connect to MySQL or MariaDB running in Docker, 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 starts MySQL/MariaDB in a Docker container, but using a locally installed MySQL or MariaDB instance is similar.

In tests, make sure your tests use the **mysql_noproc** fixture like this:

.. 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



Running on Docker/as root
=========================

MySQL and MariaDB refuse to run as root by default, but we can force them by setting user=root in the configuration file.

However, the most common and secure approach is to change the user that runs tests in Docker:

.. code-block::

    USER nobody

This line should switch your Docker process to run as user ``nobody``. See `this comment for example <https://github.com/dbfixtures/pytest-mysql/issues/62#issuecomment-367975723>`_.

Package resources
-----------------

* Bug tracker: https://github.com/dbfixtures/pytest-mysql/issues

Release
=======

Install pipenv and ``--dev`` dependencies first, then run:

.. code-block::

    pipenv run tbump [NEW_VERSION]
