Injecting a repository class in a service class and then trying to initiate service class in...

Say I have:

class SomeService implements SomeInterface
{
public function __construct(private SomeRepository $repo)
{}

public function createSomething(array $data)
{
}
}


If I want to test this service class with PHPUnit I will get an error "too few arguments passed to SomeService::__construct()"

class SomeServiceTest {
protected function setUp()
{
$this->service = new SomeService;
}

// some tests using above service...
}


I see lots of examples of this all over the internet - but why when it causes this error?

Am I missing something? You don't want to have to pass the repo to the constructor in the test again.

Am I approaching this the wrong way?

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