Basic principles of software testing

1. Early and continuous software testing. For example switching from V model to W model.
2. Try to avoid testing your own programs. Authorities fans.
3. 80/20 Principle: Eighty percent of the defects are in twenty percent of the modules.
4. A test case consists of input and expected output.
5. After the program is modified, a regression test is required to ensure that the modification is correct and no new problems are introduced.
6. Exhaustive testing is not possible. Therefore, it is necessary to design suitable use cases to achieve efficient testing.