Running Symfony Tests
The Symfony project uses a CI (Continuous Integration) service which automatically runs tests for any submitted patch. If the new code breaks any test, the pull request will show an error message with a link to the full error details.
In any case, it's a good practice to run tests locally before submitting a patch for inclusion, to check that you have not broken anything.
Before Running the Tests
To run the Symfony test suite, install the external dependencies used during the tests, such as Doctrine, Twig and Monolog. To do so, install Composer and execute the following:
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$ composer updateTip
Dependencies might fail to update and in this case Composer might need you to
tell it what Symfony version you are working on.
To do so set COMPOSER_ROOT_VERSION variable, e.g.:
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$ COMPOSER_ROOT_VERSION=5.4.x-dev composer updateRunning the Tests
Then, run the test suite from the Symfony root directory with the following command:
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$ php ./phpunit symfonyThe output should display OK. If not, read the reported errors to figure out
what's going on and if the tests are broken because of the new code.
Tip
The entire Symfony suite can take up to several minutes to complete. If you
want to test a single component, type its path after the phpunit command,
e.g.:
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$ php ./phpunit src/Symfony/Component/Finder/
