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Adds section on parallelizing tests. #11955

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Jul 29, 2019
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Adds section on parallelizing tests. #11955

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26 changes: 26 additions & 0 deletions components/phpunit_bridge.rst
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Expand Up @@ -124,6 +124,32 @@ The summary includes:
<listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener"/>
</listeners>

Running Tests in Parallel
-------------------------

The modified PHPUnit script allows running tests in parallel by providing
a directory containing multiple suites with their own ``phpunit.xml.dist``.

.. code-block:: terminal

├── tests
│   ├── Functional
│   │   ├── ...
│   │   └── phpunit.xml.dist
│   ├── Unit
│   │   ├── ...
│   │   └── phpunit.xml.dist

.. code-block:: terminal

$ ./vendor/bin/simple-phpunit tests/

The modified PHPUnit script will recursively go through the provided directory,
up to a depth of 3 subfolders or the value specified by the environment variable
``SYMFONY_PHPUNIT_MAX_DEPTH``, looking for ``phpunit.xml.dist`` files and then
run each suite it finds in parallel, collecting their output and display each
suites test results in their own section.

Trigger Deprecation Notices
---------------------------

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