It refers to whether it is convenient for users to use the software, for example, whether it can achieve the purpose of users by clicking the mouse up to three times.

After the completion of a software development, in addition to the availability (correctness), but also a good usability, the end user feel software easy to use, directly determines whether a software market success. Ease-of-use refers to the ability of software products to be understood, learned, used and attract users. Ease of use at the same time is a very broad concept, it involves easy to understand, easy to learn habits, beautiful sex, consistency, business compliance, etc., for test engineer, usability testing is a very challenging job, because often depends on the engineer's usability testing experience and deep understanding of industry knowledge, and the application of one who has a complex business logic system, carries on the usability testing, also often require the participation of users.

The ease of installation is the main content of the installation test. The installation test should pay attention to the following points:

1. Evaluation of installation manual

2. Automated program test for installation

3. Testing of installation options and Settings

4. Interrupt testing during installation

5. Installation sequence test

6. Multi-environment installation test

7. Installation correctness test

8. Repair installation test and uninstall test