about unit test

• Use unify unit test framework CPPUnit 1.12.1/Visual stdio
• Unit is a class or a function
• Test per major component
• Test by developer
• Set up clean environment for each test: isolate each test
• Test shall be automatic
• Unit test code also in review
• Same coding style as normal implementation
• Only test public interfaces, no database, no network, no files operations, stub it.
• One test one expectation
• Meaningful naming
• When see the result, you don’t need to debug the code