System Test Coverage Strategies Approach

System Test Coverage Strategies Approach:

1. Major features first. Create tests which will exercise all the principal features first, to give maximum coverage. This will probably be the same as the regression test. Then exercise each feature in some depth. 

2. Major use cases first. Major features require that you know both the user profile and the use profile. The test must be end-to-end such that some real-world user objective is reached. 

3. Major inputs and outputs. If the application is I/O dominated, then identify the most common kinds of inputs and outputs and create tests to exercise them. 

4. All GUI features 

5. All functions with variations 

6. All input/output combination