Modern web page load testing can be a challenging task due to the vast variety of incorporated web technologies. Let’s have a look at some most known issues that must be considered upon picking the right type of testing applications to go with web page monitoring.
Nowadays web pages include loads of embedded third-party content such as advertisement sections, analytics, widgets (google maps, YouTube videos, etc. ). IFrame inline elements enable embedding another web document within the current HTML document. In short, using IFrame developers can insert content from an external source or, in other words, another web page on their web page.
Since IFrame includes a separate web resource, the content inside the IFrame element is independent of the current web page and can’t be reached by the simple HTTP request to the parent URL. As a response to an HTTP request to the web page, a web server returns HTML, but it is not exactly the same that the real browser does. To display IFrame content browsers parse the page’s HTML code and then execute third-party scripts.
Speaking of modern trends in web development, a single-page application (SPA) is one more tricky thing in terms of web performance monitoring. SPA is a single URL web application run entirely in a web browser. Here are a few things you should consider before choosing the right application for SPA load testing.
Secondly, the authentication in an SPA involves HTTP headers carrying access credentials (e.g., JSON web tokens). Access tokens are provided by an SPA server for each session. When a browser executes HTTP calls, it extracts the token from the SPA server response and passes it back with each HTTP request.
Comprehensive Load Testing with LoadView
As was shown above, modern web apps logic traits put limitations on load testing with tools that work at the protocol level and do NOT use a browser. Such tools allow emulating web requests to the target web server without testing the application itself. However, creating any requests to operate with user data on the page requires corresponding knowledge in web development.
For example, to log into a web application that requires authentication, you need to authenticate client’s calls per each session. Otherwise, page performance can’t be tested accurately.
The test will be performed in a real browser (Chrome or Edge options are available) to simulate real user experience and provide realistic test results.
For more information on web application load testing, see Getting Started with Stress Test Setup and Configuring Web Application Task.