August 29th, 2019 by inflectra
We're very excited about the next version of our Rapise test automation system. The new version leverages research done by the Inflectra artificial intelligence and machine learning unit to introduce self-healing web testing and self-healing web locators to take the flakiness and manual effort associated with automating web testing.
During our observations of testers writing automated tests for modern web applications and native mobile apps, we noticed how much easier in many ways the creation and maintenance of mobile tests was. In fact mobile apps and traditional desktop applications (such as Microsoft Dynamics AX and NAV) were generally much easier to write tests for, and significantly more reliable to execute those same tests months later for regression. So we wondered, what were the unique factors that made web testing so "tricksy" as a hobbit might have said. We decided that the best thing to do was perform some "big data" analysis of popular websites to see what could be the cause. This was our Moz 500 research study.
In this study, we analyzed the 500 most popular websites as ranked by the Search Engine Optimization (SEO) tool MOZ. This Moz 500 list of websites let us analyze not only the websites statically, but also by taking repeated snapshots over time, how frequently they changed and how the changes would impact the ease of test automation.
What we found was that:
Rapise makes it easier to write tests because it includes multiple strategies and tools for creating the XPATH used to locate the objects on the web page (full, text, indexed, IDs, ARIA, etc.). However it still often results in flaky tests that fail when the application changes, and the need to frequently re-learn objects or manually "tweak" the XPATH or CSS to make the tests more reliable. We realized during this study that this is the Achilles heel of web testing and there had to be a better way...
With the new version of Rapise (6.2) that we shall be releasing shortly, we have added a completely new approach to locating objects on a web page that based on our research and development will yield significantly better results in creating tests that work without alteration, even when the application being tested changes, or when the application uses dynamic IDs and attributes.
With this new version, Rapise generates a full-path locator for each recorded element. The full-path locator includes information about all the attributes of an element and attributes of its ancestors in the DOM tree.
When you run a previously recorded test and the element is found with a traditional XPath locator then this new full-path locator is not used (there is nothing to repair).
But if the standard XPath generated for an element during recording or manually created by a tester is not valid then the new full-path locator is used instead to find the most suitable element on the page (using the fruits of our big data analysis and machine learning algorithms).
When the full-path locator is used you get the following healing notification in the report:
The healing notification indicates that an element was found with some confidence, it is a number from zero to 100%. In the notification details you can find the difference between recorded and matched elements. You can also see the images of the recorded and found elements. This information is a clue to either accept the found element or manually fix the test.
When you come across such a situation, you can then do one of three things:
Take no Action - This is the simplest yet powerful approach. If a test passes and all elements are found with pretty good confidence then there may be no reason to "fix" the test.
Build a WebAppProfile - When you analyze differences between the expected and found elements you use that to create or update your WebAppProfile.
Use the Object Manager - During playback, Rapise takes snapshots of elements found by the full-path locator. So after playback you can use the Object Manager to replace the old locators with new ones. If there are healing notifications after test playback Rapise automatically shows the prompt to open the Object Manager.
So to summarize, the main benefits of the new self-healing tests are: