test for refactoring.js

test.cb('PUT /api/stocks/1 (update the price of a single stock)', t => {
    const
        app = webserver(createList(), port());

    request(app)
        .post('/api/stocks')
        .send({name: 'EUR', currentPrice: 1})
        .expect(200)
        .then(res => res.body.id)
        .then(id => request(app)
            .put('/api/stocks/' + id)
            .send({currentPrice: 2})
            .set('Accept', 'application/json')
            .expect(200))
            .then(() => id)
        .then(id => request(app)
            .get('/api/stocks/' + id)
            .set('Accept', 'application/json')
            .expect(200))
        .then(res => res.body.currentPrice)
        .then((currentPrice) => {
            app.close();
            t.deepEqual(currentPrice, 2);
            t.end();
        });
});