Class

The @archibald/testing package provides functionality to work with classes.

mockClass

mockClass function can be used to mock all methods on a class.

import { mockClass } from '@archibald/testing';

mockClass(CLASS, RESPONSE);

Example

import { mockClass } from '@archibald/testing';

const propOneValue = 'propOne';
const propTwoValue = 'propTwo';
const newValue = 'new value';

class TestClass {
    methodOne() {
        return propOneValue;
    }

    methodTwo() {
        return propTwoValue;
    }
}

describe('mockClass', () => {
    it('should mock all methods of a class', () => {
        const testClassInstance = new TestClass();
        expect(testClassInstance.methodOne()).toBe(propOneValue);
        expect(testClassInstance.methodTwo()).toBe(propTwoValue);

        mockClass(TestClass, newValue);
        expect(testClassInstance.methodOne()).toBe(newValue);
        expect(testClassInstance.methodTwo()).toBe(newValue);
    });
});

mockMethod

mockMethod function can be used to mock all methods on a class.

import { mockMethod } from '@archibald/testing';

mockMethod(CLASS, METHOD, RESPONSE);

Example

import { mockMethod } from '@archibald/testing';

const propOneValue = 'propOne';
const propTwoValue = 'propTwo';
const newValue = 'new value';

class TestClass {
    methodOne() {
        return propOneValue;
    }

    methodTwo() {
        return propTwoValue;
    }
}

describe('mockMethod', () => {
    it('should mock one method of a class', () => {
        const testClassInstanceOne = new TestClass();
        expect(testClassInstanceOne.methodOne()).toBe(propOneValue);
        expect(testClassInstanceOne.methodTwo()).toBe(propTwoValue);

        mockMethod(TestClass, 'methodOne', newValue);
        expect(testClassInstanceOne.methodOne()).toBe(newValue);
        expect(testClassInstanceOne.methodTwo()).toBe(propTwoValue);
    });
});