phpunitHow to run tests in parallel with PHPUnit?

PHPUnit supports running tests in parallel using the --process-isolation option. This option will run each test in a separate process, allowing them to run in parallel.

phpunit --process-isolation

The output of the command will look something like this:

PHPUnit 8.5.2 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.4.3
Configuration: /path/to/phpunit.xml

............................................................  63 / 63 (100%)

Time: 00:00.845, Memory: 10.00 MB

OK (63 tests, 63 assertions)

The --process-isolation option can also be used in combination with other options, such as --testsuite to run tests in a specific test suite in parallel.

phpunit --process-isolation --testsuite MyTestSuite

For more information, see the PHPUnit documentation.

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