ncc-prototype-email-alerts-sub/__tests__/unit/globalErrorHandler.spec.ts

Northumberland Council Front End Email Alerts Subscription Prototype

import {errorHandlerMiddleware} from '../../middleware/globalErrorHandler'
import { Request, Response } from 'express';
import { CustomError } from '../../types/custom';

let req: Partial<Request>;
let res:Partial<Response>;
let next: jest.Mock;

// eslint-disable-next-line @typescript-eslint/no-explicit-any
describe('should return error and render error pages if there is any error', () => {

beforeEach(() => {
    req = {};
    res = {
        redirect : jest.fn()
    };
    next = jest.fn();

})

    test('should render error500 page when there is no error status', () => {
        const error = new Error('test error')
        errorHandlerMiddleware(error, req as Request, res as Response, next)
        expect(res.redirect).toHaveBeenCalledWith('/error500')
    })
    test('should render error404 page when there is error with status 404', () => {
        const error: CustomError = {status: 404, name: "test error", message : 'test error msg'}
        errorHandlerMiddleware(error, req as Request, res as Response, next)
        expect(res.redirect).toHaveBeenCalledWith('/error404')
    })
    test('should render error500 page when there is error with status 500', () => {
        const error: CustomError  = {status: 500, name: "test error", message : 'server error'}
        errorHandlerMiddleware(error, req as Request, res as Response, next)
        expect(res.redirect).toHaveBeenCalledWith('/error500')
    })
    test('should render error500 page when there is error with status 403', () => {
        const error: CustomError  = {status: 403, name: "test error", message : 'resource not found'}
        errorHandlerMiddleware(error, req as Request, res as Response, next)
        expect(res.redirect).toHaveBeenCalledWith('/error500')
    })
})