To put it simply, cyclomatic complexity reflects how many branching paths (among other connections) there are in a program. This is based on the fact that the more complicated a code is, the more it needs to be tested since it is less reliable. It is like you are counting the number of possible branch points in your code.
Thomas McCabe developed the cyclomatic complexity in 1976. That is the reason why it is also known as program complexity, or as McCabe’s complexity. It is very effective since it is still being used despite having been developed for more than forty years to date.
The cyclomatic complexity can be solved using CYC = E – N + 2P. Whereas, P is the number of disconnected parts of the flow graph such as a calling program and a subroutine. The E of the formula signifies the number of edges or can also be the transfers of control. The N of the formula is for the number of nodes or the sequential group of statements containing only one transfer of control. Keep in mind that the binary decisions add one to complexity.
Once the answer has been derived, it can then be used for breadth testing and length testing. Length testing is a way by which you can try to cover the entire scope by selecting the important test cases for each feature. While breadth testing is when you validate the entire concept of a program or code but do not test the features in detail.
There are plenty of tools that can help you solve a cyclomatic complexity. Here are the important things you should remember to help you decide which tool can help you out.
It is important that you make sure to read through the comments and reviews section of the website of the company offering the tool for cyclomatic complexity. You will get to have a first-hand opinion about the cyclomatic complexity tool since the commentators would be their previous and current clients. Skim through and check if there are any complaints resolved by their support staff.
It is a good idea to select a cyclomatic complexity tool which was designed to function for different clients. Also check on the problems their support staff may have faced during their work and how they were able to overcome it.
Lastly, considering that the cyclomatic complexity tool is not free, you should conduct a canvas for each companies’ price quotations that offer them. Identify your budget and shortlist those who are able to meet it.
Established developers offering cyclomatic complexity tools make sure that they leave a lasting impression on their clients to make sure that they are referred to in times of needs.
Make sure that you research a lot about cyclomatic complexity so that you will be able to understand it in no time.