What is Cross-browser Testing
Cross-browser testing is a type of non-functional software testing where web applications are checked for support across different browsers and devices. Cross-browser testing provides an objective, independent view of the status of the web application.
Cross-browser testing allows your business to appreciate and understand the risks of releasing a web application or implementing new feature(s).
Test techniques include the process of executing a web application with the intent of finding failures in different browsers and devices and verifying that the website is fit for use in all of them. In other words, Cross-browser testing is verification that web application behaves in various web browsers and devices identically.
Why Cross-browser Testing is So Important
As of July 2021, more than 50% of the browser market is split between 226 web browsers of different vendors and versions. The rest (approximately 50% of the browser market) is also divided between more than 100 versions of Chrome for Android and Safari for iOS.
Sounds awful, doesn't it? There are hundreds of different web browsers that any modern website should support. Otherwise, the business will not be competitive.
Summary: as of July 2021, any modern web application must support at least 350+ different web browsers. See the visualized data on a Pie chart below. Click the image to view it in maximum size.
When You Should Start Cross-browser Testing
There is one simple answer: you should start performing cross-browser tests as soon as possible. The earlier - the better. The modern approach to web development is that testing has become a part of the web development process. Cross-browser testing is now an integral part of web development and is performed simultaneously with creating portions of code.
- You will make more revenue as you will deliver high-quality products faster.
Summary: you should start performing the cross-browser test at the early development stage to deliver high-quality web applications faster.
Who Should Do Cross-browser Testing
In the early 2000s cross-browser testing was performed by dedicated persons - QA engineers. Later, with the widespread adoption of responsive design, developers began to engage in cross-browser testing as well.
How to Do Cross-browser Testing
Define your testing strategy
Create a list of key features and main functionalities that are critical for your project. List the requirements. Create documentation for the testing process. Schedule the testing process. Determine the criteria for successful completion testing.
Determine test scenarios and test cases
Test scenario is a description of a problem that a user may encounter while using a program. Test cases describe what needs to be tested without detailing the steps or data to be used.
Perform the tests
Use different browsers and devices to test the features and functionalities that were defined with the testing strategy. Pass the test scripts.
Document the results
Document the result of each test and summarize all results. Depending on the coverage requirements and the severity of the issues found, decide whether the feature passed the test or not, whether it is ready for delivery to customers or not.
What to Focus On When Cross-browser Testing
- Session and cookies can make your web application useless.