Typescript - Mock interface with mapped types

For testing purpose, I'd like to be able to create an object implementing an interface, only with function I need for my test, without having to manually maintain a mock object with all possible properties. Generally, I'm using one function at a time, so don't need to define all others but I don't want TS to keep complaining about missing properties.

For example, I have an interface IFoo :

interface IFoo {
    myFunc(): string;
    otherFunc(): number;
}

I tried to create a mapped type, which assign jest.Mock<{}> to all properties of IFoo

type Mockify<T> = {
    [P in keyof T]: jest.Mock<{}>
};

Calling it like this:

const mockFoo: Mockify<IFoo> = {
    otherFunc: {
        // Mocked function behavior
    }
}

The problem with this approach is that TS complains about the missing myFunc property on the object passed to Mockify.

I also tried Mockify<Partial<IFoo>> to ignore missing properties, but then my type defintion is different from IFoo and some other functions depending of IFoo are complaining. I could also define all properties as optionnal, but conceptually I don't like that.

I have the feeling that mapped types could make the job, but I maybe don't have the right approach.

Thanks for your help!