save(new Carrier(0, 'email@email.com')); $useCase = new GetAllCarriers($repo); $response = $useCase->execute(); $this->assertEquals([new Carrier(0, 'email@email.com')], $response); } public function test_get_zero_carriers(): void { $repo = new FakeCarrierRepository(); $useCase = new GetAllCarriers($repo); $response = $useCase->execute(); $this->assertEquals([], $response); } }