UAT is a sort of testing that usually done at the last step of software development process (before release the software to the market).UAT is done by user (the person who will use this software or person who possess requirement of software).It is the way to increase reliance and ensure that the software was designed correctly based on requirements.

Before doing UAT your software need to pass Unit Testing,Integration Testing,System testing and must solved the defects found in each of these testing phases (in practical, the defects relate to technical or logic of software should be fixed before sending to UAT).The defects concern with appearance or color of software are acceptable during doing UAT.

Test Case is also need in UAT because it help doing UAT more effective. Otherwise the test case should be designed on the perspective of Bunsiness Flow and Business Logic that based on requirement. The tester will emphasize on testing the software like they are real user.

Procedure for doing UAT.
One important factor you must focus on while you doing UAT is Test Environment.The test environment should be similar to Production Enviroment as much as possible.

Basic step of doing UAT are as follow…

-Make the testing plan for UAT.
-Design the test cases for UAT.
-Set up testing team for operate UAT in accordance with test cases.
-Operate UAT.
-Record Bug or Defect found during operate UAT and hold a meeting in order to summarize anything we have to modify.
-Fix bug or defect found in previous step and then do Regression Testing.
-Finish UAT, sign off.

UAT is classified as Black box testing.The test cases for UAT normally designed according
to requirements of user (after finish requirements definition phase). Business Analysis
team or System Analysis team are also provide the inputs used for creating the test cases
and it should be described using simple language which easy to understand because the
tester may be the person other than programmer or tester and they don’t know the
technical phrase.

Visit these site for more information about UAT (User Acceptance Testing)
-Wikipedia
-eHow
-Exforsys INC

Reference for this article:
-http://www.welovebug.com/user-acceptance-testing/what-is-uat/#more-1503

Thank you,
Jitkasem Pintaya.

Related posts:

1. Software testing part I.
2. How to do white box testing
3. Software testing part II (White Box and Black Box testing)