Visual testing is used to examine what happened at the point of software failure by defining the data in such a way that the developer can quickly identify the reason of failure, and the information is expressed clearly so that any other developer can utilize this information.
Visual testing aims to show actual problem rather than just to describe it, remarkably it increases understanding and clarity so that the problem can be solved quickly.
The general meaning of visual is optical means what we can see. Therefore, visual testing requires the video recording of the entire process. It captures everything that happens at the time of system testing in video format. Tester gives a picture in a picture webcam and audio commentary from microphones as an input value.
Visual Inspection System
System for visual inspection consists of a high-quality video camera for collecting data and software and computer to analyze data. The video camera is used to capture a picture of the object during the testing process. These object pictures are sent to a computer via a frame grabber.
The computer has software that analyze the pictures and decide whether the object fails or passes the inspection.
The conditions under which the video testing system works necessarily well controlled and easy to maintain testing persistence.
Visual testing offers a number of advantages. It increases the quality of communication drastically because testers can optically present the problem to the developer as opposed to describing it in written document form. The developer has all the required evidence of a test failure so, the focus is only on the cause of the failure and how to fix it.
Some remarkable advantages and disadvantages are given below:
Advantages of Visual Testing
Disadvantages of Visual Testing:
Visual testing is used when we test software with easily detectable defects and do not allow component variations.