Working of Visual Testing
Visual tests generate, compare and analyze browser snapshots to detect if any pixels have changed. These pixel’s differences are called visual pixels.
Steps in Visual Testing:
- The Quality Analyst or the tester runs the developed code to test the web application’s user interface part.
- Initially, it will record the screen as snapshots. It acts as a baseline with which the further test results will get compared.
- After that, the QA runs the code in the background and it will take or record the snapshots of those running codes.
- Now, it will start comparing with the baseline snapshots.
- If changes are found among those snapshots then the test is considered as failed.
- If no changes are found then it will be tested positively.
Some visual testing tools will generate reports where the differences in the snapshots are captured. It finds where actually the snapshots get differed. Also, it generates the report for successful test results.
- If these image differences are caused by errors, developers can fix them and return the test to check
- If the fixes actually worked. If differences are caused by subsequent changes in the UI, developers will have to review the screenshot and update baseline images against which visual tests can be run in the future.
Visual Testing – Software Testing
Visual Testing is also called Visual UI Testing. It validates whether the developed software user interface (UI) is compatible with the user’s view. It ensures that the developed web design is correctly following the spaces, sizes, shapes, and positions of UI elements. It also ensures that the elements are working properly with various devices and browsers. Visual testing validates how multiple devices, browsers, operating systems, etc., affect the software.
This Article focuses on discussing each of these topics-
Table of Content
- Features of Visual Testing
- Why Visual Testing?
- Visual Testing Methods
- Types of Visual Testing
- Tools for automated visual testing
- Additional types of Visual Testing
- Advantages of Visual Testing
- Disadvantages of Visual Testing
- Conclusion
Let’s start discussing each of these topics in detail.