Mocking class methods in Jest with expected return

I've been trying to figure out mocking of class and having it's method return what I want.

So in every XUnit lib you have something like this:

class Car
{
    private service;

    public function create()
    {
        if(!$this->service->isValid()) {
            return false;
        }

        /** more code **/
        return true;
    }

    public function setService($service)
    {
        $this->service = $service;
    }
}

class CarTest extends TestCase
{
    public function testCreate() 
    {
        $serviceMock = $this->getMock(Service::class);
        $serviceMock->expects($this->once())->method('isValid')->willReturn(true);

        $car = new Car();
        $car->setService($serviceMock);

        $this->assertTrue($car->create());
    }
}

So let's get back to JS and JEST.

I have same situation in JS

class Car {
    set_service(service) {
        this.service = service;
    }

    create() {
        if (!this.service.validate()) {
            return false;
        }
        /** more code **/
        return true;
    }
}

How would I mock service class because that is also a class in another file and how would I set validate method to return true.

There is no clear example in documentation that I get, maybe I am just too used to XUnit libraries to understand this new concept.