Allow symfony6

[77web]

We want to update our project using this bundle to Symfony6.
So please allow Symfony6 🤗

[77web]

in lowest deps CI, Symfony3.4 KernelTestCase does not comply phpunit signature 🤔

[77web]

@ttskch Please review 🙏

[ttskch]

@77web
Thanks a lot!

I found that symfony/framework-bundle 4.2.3- are not compatible with phpunit8.

And in the first place, unfortunately, this library cannot be tested with Symfony 5.0- and Symfony 5.1+ at the same time because of a BC Breaking in Symfony 5.1+.

So could you please do following?

• don't remove symfony/framework-bundle from require-dev
• modify require-dev > symfony/framework-bundle from ^5.2 to ^5.1|^6.0

I don't know why I specified not ^5.1 but ^5.2 originally😅

Thanks.

[siketyan]

Suggestion:

if (\Symfony\Component\HttpKernel\Kernel::VERSION_ID >= 50100) {
    protected function configureContainer(ContainerConfigurator $c)
    {
        $c->import(__DIR__.'/Resources/config/test.yaml');
    }
) else {
    protected function configureContainer(ContainerBuilder $c, LoaderInterface $loader)
    {
        // I do not care this works
        $loader->load(__DIR__.'/Resources/config/test.yaml');
    }
}

[ttskch]

@siketyan OMG. I'm trying that after this. Thanks!

[ttskch]

@77web Thanks!