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.


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


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">

Not sure if this will cause any issues.

  • Thanks @albertski this worked for me but don't know why yet... Dec 28 '18 at 21:26
  • Where to comment this? is this line not really required?
    – ARUN
    Jan 21 '19 at 8:25
  • This is in phpunit.xml.
    – albertski
    Jan 21 '19 at 15:57
  • 3
    Removing this line will only disable the deprecation listener, the correct answer here is provided by @dragu-alexandru.
    – mpp
    May 20 '19 at 15:02
  • 1
    "Do we need this screw?" "Nahhhh"
    – AlxVallejo
    Apr 15 '20 at 19:31

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.

  • If you are doing things in Drupal, I think this is the answer you are looking for. And you probably want to put it in the require-dev section of composer.json: "require-dev": { "drupal/core-dev": "^9" },
    – rjpeter2
    Jan 6 at 23:47

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