Allow profiles to override extensions

[Zayon]

Fixes #1339

[Zayon]

Following #1339

I added a feature file that demonstrate the issue I have.

I fixed the Unrecognized option error by moving the unset($configs[$i]['extensions']); line but the extensions in the default profile are still loaded in the custom profile.

My investigations tends toward the ConfigurationLoader here

Behat/src/Behat/Testwork/ServiceContainer/Configuration/ConfigurationLoader.php

Line 212 in 689f1e4

private function loadConfigs($basePath, array $config, $profile)

where changes could be done.

One thing I have to test is loading a second extension specifically in the custom profile, that would be interesting to know if it works or if extensions are activated only when declared on the default profile.
EDIT: It works I added a second commit to demonstrate

Any thoughts ?

[ciaranmcnulty]

This looks useful, it's certainly something I've struggled with 👍

[ciaranmcnulty]

Can you please rebase this? I think maybe the feature files could be simplified as well

[Zayon]

I'll try to take a look at it this week-end if I can

[Zayon]

I rebased :)

[ciaranmcnulty]

so looking at this again (sorry again for slow progress) how do I inherit extension configuration from the default profile?

[Zayon]

From the tests I have written I would say that it's possible to :

1. Disable all extensions from the default profile with

      default:
        extensions:
          custom_extension.php: ~
      custom_profile:
        extensions: ~

Here, custom_profile doesn't have any extension loaded

2. Load an extension on a custom profile but not on the default one

      default:
        extensions:
          custom_extension.php: ~
      custom_profile:
        extensions:
          custom_extension2.php: ~

Here, custom_profile has both extensions loaded and the default profile only has custom_extension loaded and NOT custom_extension2

It would be intersting to add a tests for overriding a specific configuration of an extension, while keeping the rest of the configuration.

[Zayon]

To be clearer :

how do I inherit extension configuration from the default profile?

It's done by default