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Checking HTTP status codes from your Selenium/Java tests with the Meddler extension

Over the years, I’ve see a couple of questions repeatedly on the Selenium boards related to HTTP status codes: How do I check for broken links (404s)? How can I check the status code of a web-service request made from my web-app? The answer is usually “Selenium can not do that” because, of course, Selenium is a browser automation tool – not a full-featured testing solution. Other answers suggest various solutions…none that I’ve seen are elegant.
This problem came to my mind last week as I was considering a task that will require writing a browser extension to solve a different, … Continue reading »

What is the Fastest Web Browser in 2018?

Even though interoperability has been conquered, browsers still want to compete on performance, so picking the fastest one is a reasonable question.  But what does browser performance mean in a world in which many people now have 1 Gb/s network connections in their home, and a 4G LTE phone connection can go up to 173Mb/s?

Testing Popup Windows

We often receive questions about how Load Tester handles popup windows. In this post, I’ll describe how Load Tester handles these elements and provide a sample recording.
How does Load Tester Handle Popups?
Users do not regularly encounter popups. As a result, these windows may appear to function differently from regular browser windows.
However, when recording using a virtual browser, Load Tester records any calls to the server. Replaying a recording or running a test will replay those calls whether issued from a normal browser window or a popup.
NOTE: The following method is only applicable to “Virtual Browser” recordings.
Recording a Popup Window
1. On the … Continue reading »

Google Chrome 38 Recording Workaround

The latest version of 38 Google Chrome changed the security rules so that the recording feature of Load Tester 6.1, 6.2, 6.3, and 6.4 doesn’t work right out of the box. We’re working on a fix, but in the meantime when you start recording on Chrome you’ll see this shield icon in the top right-hand corner.

IE 11 Support Added in Latest Load Tester 5.5 patch

Earlier last month, Microsoft began rolling out IE 11 updates for Windows 7 users. Now, with the most recent release of Load Tester 5.5, you can rest assured that Load Tester will continue to allow you to record your testcases using the upgraded IE 11.
IE 11 includes a number of new enhancements (many of which are reserved for Windows 8.1 customers). However, on Windows 7, users can still benefit from improved performance and standards support.
One of the interesting modifications of note is a new change to IE’s user agent header. Starting with IE 11, the browser … Continue reading »

Safari on New iPad 18% Faster than iPad 2

Thinking about getting the latest new iPad? One of the main activities for the iPad is web browsing, so we thought it would be fun to see how all three iPad models stacked up in the web page load time race.
Which Web Pages? These websites were picked for no particular reason other than we use them regularly and are likely representative of the browsing habits of a large number of our readers.
www.amazon.com
www.apple.com
www.facebook.com
www.microsoft.com
www.wikipedia.org
www.yahoo.com
Static vs. Real-World Testing
Typically browser performance is reported by running static benchmark tests that measure in a highly controlled way with few variables. Unfortunately, when you or I … Continue reading »

Internet Explorer Static File Caching Defect

In going through cases we have with some customers, we’ve seen a few instances where Internet Explorer does not cache shared static resources. Within Load Tester, this problem becomes immediately apparent:

Note that the shared CSS, Javascript, and images are re-requested again on the About page and every other recorded page that uses them. Note also, these files don’t come back with a 304 (Not Modified), but instead the full content of the file is sent over and over again through a HTTP 200. Normally, the browser should load these files once, and not need to request them again within the … Continue reading »

Load Tester 4.3 Improvements: Speculative Authentication for IE8 and IE9

Load Tester 4.3 carries a number of improvements for both ease of configuration, and accuracy of test simulation. Among these improvements comes support for speculative authentication, allowing Load Tester to simulate behavior from IE 9. The speculative authentication is only used for HTTP authentication schemes used by Load Tester’s Connection Negotiation Authentication feature. More information about HTTP authentication is available under How HTTP Authentication works and why load testers should care.
To describe the speculative authentication feature, it is easiest to simply look at a testcase using Basic Authentication.
Continue reading »

What’s new in Load Tester 4.2

The 4.2 release focuses on platform compatibility and productivity increases from our services work in the past year with such clients as the US Census and the New York Marathon.
With a slew of new browsers and operating systems available, this release also includes support for 64-bit Windows and AIX operating systems, the latest versions of Internet Explorer, as well as the Chrome and Safari browsers.
On the productivity side there are some pretty big changes to allow testers to configure more complex testcases with less effort than ever before. Some of those changes are evident in the new Fields View and … Continue reading »

IE Performance Tip: avoid repeating <img> tags

This tip is more for those users who have developed a sophisticated data-crunching interface to their app. On one screen, for simplicity, the app gives a long list of data, without pagination controls being created by the user (such as a “View All” feature). To keep it pretty, each line has a visual icon or some surrounding images. Sound familiar? For example, let’s say the list is created by a testing system, indicating which tests were passed and which failed. The list may look something like:

For this example, we’ve created a few lengthy files to measure IE’s rendering performance. They … Continue reading »

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