await page.route('**/jsonstore/collections/books', (route, request) => { //на страницата регистрираме page.route
            route.fulfill({ // с fulfill връщаме данни
                body: JSON.stringify(mochData),
                status: 200,
                headers: {
                    'Access-Control-Allow-Origin': '*',
                    'Content-Type': 'application/json',
                }
            })
        });