SymfonyTestsListener does not exist on PHP Unit Test

Question

When I try to run a unit test I get an error that SymfonyTestsListener does not exist. Am I running this correctly?

../../vendor/bin/phpunit -c phpunit.xml ../modules/custom/my_module/

Class "Symfony\Bridge\PhpUnit\SymfonyTestsListener" does not exist

I am using PHPUnit 6.5.13.

Answer 1

Had a similar issue: Solved it by adding the "symfony/phpunit-bridge": "^3.4.3" library.

Answer 2

Removing the line below in phpunit.xml fixes my issue:

<!-- The Symfony deprecation listener has to come after the Drupal listener -->
<listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener">
</listener>

Not sure if this will cause any issues.

Answer 3

Although the approved answer here shows the exact package that is needed what users may be looking for is to require the "drupal/core-dev" package which contains the needed "symfony/phpunit-bridge" as a dependency.

Answer 4

Try using symfony/phpunit-bridge:

composer require --dev symfony/phpunit-bridge

This will install the phpunit-bridge that is used with phpunit, it fixed the issue for me.