Software test model (V model and W model)

software test V Model

shortcoming ： The test entered late （ limitations ）

Unit test and integration test ： Check whether the execution of the program meets the requirements of software design

The system test ： Check whether the system function meets the index required by the system

The acceptance test ： Determine whether the software implementation meets user requirements or contract requirements

 

software test W Model （ double V Model ）

The tester enters the phase ：

1. The user needs ： Understand the scope of requirements 、 Purpose 、 background , Prepare for acceptance testing

2. Requirements analysis and system design ： Learn and analyze needs , Write a test plan , Prepare for system testing

3. Outline design ： Build a test case framework , Detailed test plan , Prepare for integration testing

4. Detailed design ： Refine the test case framework , Prepare for unit testing

5. code ： Write test cases , Unit test （ Internal testing of a module ）

6. Integrate ' Integration testing ：（ basis ： Integration test cases , Get... From the encoding phase , Draw test cases for integration testing ）

7. The implementation of ' The system test ：（1. Set up the environment 2. Data preparation 3. Perform the test 4. Defect management 5. Write test report ）

8. deliver ' The acceptance test ： Cooperate with users to complete the test , Guide users to use

• advantage

1. Testing and development go hand in hand

2. It's not just programs that are being tested , It also includes requirements and Design

3. Find software defects as early as possible , It can reduce the cost of software development

• shortcoming （ limitations ）

demand 、 Design 、 Activities such as coding are considered serial ; There is also a linear relationship between test and development activities , Last stage Complete end , Only then can we officially start the next stage of work . Can't support agile development model . For the current software development complex and changeable situation ,W model Type A does not solve the puzzle of test management .