Analyzing test case quality with mutation testing approach

Testing is the most important process for the validation and verification of the industrialized products. Similarly, in the field of software development it counts a lot. Sometimes it becomes difficult to judge the quality of test cases especially in the case of large and complex projects, where not even a single fault is tolerable and can have more consequences. So the solution lies in performing a mutation testing process which is a type of white box testing. In the mutation testing process, the quality of test cases is analyzed by just making mutants of the original code and then by killing them. In this paper, the whole process of mutation testing approach is analyzed and then the process is applied on a piece of code to give the complete step by step description of making and killing the mutants.