Cannot debug tests when using 'docker-compose exec' (PHP)
I have created a PHP CLI Interpreter using Docker Compose (Preferences -> Languages & Frameworks -> PHP -> CLI Interpreter).
The interpreter has 2 lifecycle options:
- Always start a new container ('docker-compose run')
- Connect to existing container ('docker-compose exec')
I would like to use the second option (exec) because it allows phpunit tests to run much more quickly (see https://youtrack.jetbrains.com/issue/WI-37986). However, when that option is selected, I lose the ability to debug my unit tests.
Specifically, when the "exec" option is selected and I try debug, I get the error:
Connection was not established.
Probably 'xdebug.remote_host=docker.for.mac.localhost' is incorrect.
However, when the "run" option is selected, debugging works (breakpoints trigger as expected).
Is it possible to debug unit tests when the "exec" option is selected?
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Additional info
- Operating System: macOS Big Sur, Version 11.3.1
- IDE: IntelliJ IDEA Ultimate 2021.1
- Downloaded Plugins: PHP, PHP Docker, PHP Remote Interpreter (all by JetBrains)
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Yes, that should be possible.
Please try to bring your docker-compose config down, then try debugging PHPUnit tests again.
When the service is down IDE would launch it for the first time with docker-compose run. All consequent sessions will be run using exec.
That worked!
Great!