The first chapter requirements phase
The most effective testing should begin the initial stage of the project, much earlier stage in the preparation of the program code. First is the need to check the requirements document.
Article: testers early intervention
Testers need to start from the beginning of the project life-cycle access, in order to accurately understand the object of the test, it is possible to design a more excellent and comprehensive test plan, test design, test procedures and test cases. Find defects earlier in the life cycle, then the correction of defects with a smaller price.
Article II: verification requirements