What is it?

This bundle provides features that help you run your Symfony-framework-based App's testsuite more efficiently with isolated tests.

It provides a StaticDriver that will wrap your originally configured Driver class (like DBAL\Driver\PDOMysql\Driver) and keeps a database connection statically in the current php process.

With the help of a PHPUnit listener class it will begin a transaction before every testcase and roll it back again after the test finished for all configured DBAL connections. This results in a performance boost as there is no need to rebuild the schema, import a backup SQL dump or re-insert fixtures before every testcase. As long as you avoid issuing queries that result in implicit transaction commits (Like ALTER TABLE, DROP TABLE etc) your tests will be isolated and all see the same database state.

It also includes a StaticArrayCache that will be automatically configured as meta data & query cache for all EntityManagers. This improved the speed and memory usage for my testsuites dramatically! This is especially beneficial if you have a lot of tests that boot kernels (like Controller tests or ContainerAware tests) and use Doctrine entities.

How to install and use this Bundle?

1. install via composer

   composer require --dev dama/doctrine-test-bundle

2. Enable the bundle for your test environment in your AppKernel.php

   if (in_array($env, ['dev', 'test'])) {
       ...
       if ($env === 'test') {
           $bundles[] = new DAMA\DoctrineTestBundle\DAMADoctrineTestBundle();
       }
   }

   Note: if you are using symfony flex and you are allowing contrib recipes (extra.symfony.allow-contrib=true) then the bundle will be automatically enabled for the 'test' environment. See https://github.com/symfony/recipes-contrib/tree/master/dama/doctrine-test-bundle

3. Add the PHPUnit test listener in your xml config (e.g. app/phpunit.xml)

   <phpunit>
       ...
       <listeners>
           <listener class="\DAMA\DoctrineTestBundle\PHPUnit\PHPUnitListener" />
       </listeners>
   </phpunit>

4. Make sure you also have phpunit/phpunit available as a dev dependency (versions 6 and 7 are supported with the built in listener) to run your tests. Alternatively this bundle is also compatible with symfony/phpunit-bridge and its simple-phpunit script.

5. That's it! From now on whatever changes you do to the database within each single testcase (be it a WebTestCase or a KernelTestCase or any custom test) are automatically rolled back for you 😊

Configuration

The bundle exposes a configuration that looks like this by default:

dama_doctrine_test:
  enable_static_connection: true
  enable_static_meta_data_cache: true
  enable_static_query_cache: true