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# Running the Test Suite

`django-treebeard` includes a comprehensive test suite. It is highly recommended that you run and update the test suite when you send patches.

## py.test

You will need pytest to run the test suite.

To run the test suite:

    $ py.test

You can use all the features and plugins of pytest this way.

By default the test suite will run using a sqlite3 database in RAM, but you can change this setting environment variables:

`DATABASE_ENGINE`

`DATABASE_NAME`

`DATABASE_USER`

`DATABASE_PASSWORD`

`DATABASE_HOST`

`DATABASE_PORT`

  Sets the database settings to be used by the test suite. Useful if you want to test the same database engine/version you use in production.

## tox

`django-treebeard` uses tox to run the test suite in all the supported environments:

> - py24-dj12-sqlite
> - py24-dj12-mysql
> - py24-dj12-postgres
> - py24-dj13-sqlite
> - py24-dj13-mysql
> - py24-dj13-postgres
> - py25-dj12-sqlite
> - py25-dj12-mysql
> - py25-dj12-postgres
> - py25-dj13-sqlite
> - py25-dj13-mysql
> - py25-dj13-postgres
> - py26-dj12-sqlite
> - py26-dj12-mysql
> - py26-dj12-postgres
> - py26-dj13-sqlite
> - py26-dj13-mysql
> - py26-dj13-postgres
> - py27-dj12-sqlite
> - py27-dj12-mysql
> - py27-dj12-postgres
> - py27-dj13-sqlite
> - py27-dj13-mysql
> - py27-dj13-postgres

This means that the test suite will run 24 times to test every environment supported by `django-treebeard`. This takes a long time. If you want to test only one or a few environments, please use the -e option in tox, like:

    $ tox -e py27-dj13-postgres

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