GetAllUsers endpoint and test

getAllUsers.spec.ts

import { Request, Response } from 'express';
import getAllUsers from './getAllUsers';

describe('Get all users request', () => {
    let mockRequest: Partial<Request>;
    let mockResponse: Partial<Response>;
    let responseObject = {};

    beforeEach(() => {
        mockRequest = {
        };
        mockResponse = {
            statusCode: 0,
            send: jest.fn().mockReturnValue({
                json: jest.fn().mockImplementation((JSONdata) => {
                    responseObject = JSONdata;
                })
            })
        };
    });

    test('200 - users', async () => {
        const expectedStatusCode = 200;
        const expectedReponse = {
            users: [
                {
                    name: 'John',
                    age: 30
                },
                {
                    name: 'Peter',
                    age: 40
                }
            ]
        };

        getAllUsers(mockRequest as Request, mockResponse as Response);

        expect(mockResponse.statusCode).toBe(expectedStatusCode);
        expect(responseObject).toEqual(expectedReponse);
    });
});

GetAllUsers.ts

import { Request, Response } from "express";
import { findAllUsers } from "../services/userService";

export default function getAllUsers(request: Request, response: Response) {
    const users = findAllUsers();

    response.statusCode = 200;
    response.send().json({ users });
}