Challenge 1 / 1

Suppose we have the following class:

class DinosaurHatcher
{
    public function __construct(private LoggerInterface $logger)
    {
    }

    public function getProgressTowardsHatching(): int
    {
        // ...
    }

    public function warmEgg(): void
    {
        // ...
    }
}

In a test for a different class, we decide to mock this:

$hatcher = $this->createMock(DinosaurHatcher::class);

What will happen if we call $hatcher->getProgressTowardsHatching() or $hatcher->warmEgg()?

Trick question! This will trigger an error: you can't mock a class that has required constructor arguments!

Nothing will happen when you call those methods: the "normal" logic will not be executed. If you look at the return values of the methods, warmEgg() will return null and getProgressTowardsHatching() will return 0.

Nothing will happen when you call those methods: the "normal" logic will not be executed. If you look at the return values of the methods, both will return null.

Since we haven't controlled the return value yet with $hatcher->willReturn(), both methods will run their normal logic and return the normal value.

Rewatch the video