Jest: How to mock one specific method of a class

Question

Let\'s suppose I have the following class:

export default class Person {
    constructor(first, last) {
        this.first = first;
        this.last = last         


        

Answer 1

rather than mocking the class you could extend it like this:

class MockedPerson extends Person {
  sayMyName () {
    return 'Hello'
  }
}
// and then
let person = new MockedPerson();