Could anyone suggest books or materials to learn unit test?
Some people consider codes without unit tests as legacy codes. Nowadays, Test Driven Development is the approach for managing big software projects with ease. I like C++ a lot, I learnt it on my own without any formal education. I never looked into Unit Test before, so feel left out. I think Unit Tests are important and would be helpful in the long run. I would appreciate any help on this topic.
My main points of concern are:
What is a Unit Test? Is it a comprehensive list of test cases which should be analyzed? So lets us a say i have a class called "Complex Numbers" with some methods in it (lets says finding conjugate, an overloaded assignment operator and an overloaded multiplication operator. What should be typical test cases for such a class? Is there any methodology for selecting test cases?
Are there any frameworks which can create unit tests for me or i have to write my own class for tests? I see an option of "Test" in Visual Studio 2008, but never got it working.
What is the criteria for Units tests? Should there be a unit test for each and every function in a class? Does it make sense to have Unit Tests for each and every class?