feat(discovery): discover autoload-dev namespaces

[Treggats]

Working on some tests and wanted to use a different database than default. Which is SQLite.
I tried adding the database config under the tests directory, only it was never discovered.

After digging it turned out that only the namespaces from autoload.psr-4 where loaded and not autoload-dev.psr-4

This PR updates processing the namespaces from the composer.json file and adds autoload-dev.psr-4 to it.

[brendt]

Sorry for not getting back on you via Discord. We used to discover dev locations, but that ended up causing a lot of issues. Instead, you should manually add your testing discovery locations during test setup. Here's what that looks like:

    protected function setUp(): void
    {
        $this->discoveryLocations = [
            new DiscoveryLocation('Tests\\Tempest\\Integration\\Console\\Fixtures', __DIR__ . '/Console/Fixtures'),
            new DiscoveryLocation('Tests\\Tempest\\Fixtures', __DIR__ . '/../Fixtures'),
        ];

        parent::setUp();

This assumes you extend \Tempest\Framework\Testing\IntegrationTest

[Treggats]

@brendt Actually I'm glad, as I've also was seeing weird issues on the tests in this repository but nog my application.

Is this test setUp() documented? As I've been searching for something like this. But couldn't find anything

[brendt]

It's not documented no, we should add it here: https://tempestphp.com/docs/essentials/testing

I made an issue for it: #1443 I'll pick this up somewhere later, or you can look at it if you want to

[Treggats]

It's not documented no, we should add it here: https://tempestphp.com/docs/essentials/testing

I made an issue for it: #1443 I'll pick this up somewhere later, or you can look at it if you want to

I'll have a look :)