swaf/test/CsrfProtectionComponent.test.ts

import useApp, {TestApp} from "./_app";
import Controller from "../src/Controller";
import CsrfProtectionComponent from "../src/components/CsrfProtectionComponent";
import supertest from "supertest";

let app: TestApp;
useApp(port => {
    return app = new class extends TestApp {
        protected async init(): Promise<void> {
            this.use(new class extends Controller {
                routes(): void {
                    this.get('/', (req, res, next) => {
                        res.render('test/csrf.njk');
                    }, 'csrf_test');

                    this.post('/', (req, res, next) => {
                        res.json({
                            status: 'ok',
                        });
                    }, 'csrf_test');
                }
            }());

            await super.init();
        }


        protected registerComponents() {
            super.registerComponents();
            this.use(new CsrfProtectionComponent());
        }
    }(port);
});

describe('Test CSRF protection', () => {
    let cookies: string[];
    let csrf: string;

    test('no csrf token should be in session at first', (done) => {
        const agent = supertest(app.getExpressApp());
        agent.post('/')
            .expect(401, (err, res) => {
                if (err) return done(err);

                expect(res.text).toContain(`You weren't assigned any CSRF token.`);
                cookies = res.get('Set-Cookie');

                agent.get('/')
                    .set('Cookie', cookies)
                    .expect(200, (err, res) => {
                        if (err) return done(err);

                        csrf = res.text;
                        done();
                    });
            });
    });

    test('sending no csrf token should fail', (done) => {
        expect(cookies).toBeDefined();

        const agent = supertest(app.getExpressApp());
        agent.post('/')
            .set('Cookie', cookies)
            .expect(401)
            .end((err, res) => {
                if (err) return done(err);

                expect(res.text).toContain(`You didn't provide any CSRF token.`);
                done();
            });
    });

    test('sending an invalid csrf token should fail', (done) => {
        expect(cookies).toBeDefined();

        const agent = supertest(app.getExpressApp());
        agent.post('/')
            .set('Cookie', cookies)
            .set('Content-Type', 'application/json')
            .send({csrf: 'not_a_valid_csrf'})
            .expect(401, (err, res) => {
                if (err) return done(err);

                expect(res.text).toContain(`Tokens don't match.`);
                done();
            });
    });

    test('sending a valid csrf token should success', (done) => {
        expect(cookies).toBeDefined();

        const agent = supertest(app.getExpressApp());
        agent.post('/')
            .set('Cookie', cookies)
            .set('Content-Type', 'application/json')
            .send({csrf: csrf})
            .expect(200, done);
    });
});