AgentSmith72

class OperationsServiceTest extends TestCase
{
    public static $status = [true];

    public function setUp(): void
    {
        parent::setUp();

        $this->instance(
            PaymentService::class,
            Mockery::mock(PaymentService::class, function (MockInterface $mock) {
                $mock->shouldReceive('getData')->andReturn(self::$status);
            })
        );
    }

    public function testPositive(): void
    {
        self::$status = [];
    }

    public function testNegative(): void
    {
         //  В негативном тесте mock уже вернёт пустой массив
    }
}