Cyclomatic complexity is the measurement of how complicated a set of instructions is like 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. There are some individuals who call it program complexity, or as McCabe’s complexity. Today, it is still one of the most popular and meaningful measurements for analyzing code.
CYC = E – N + 2P is the formula for cyclomatic complexity. 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 is the number of nodes which is the sequential group of statements containing only one transfer of control. Keep in mind that the binary decisions add one to complexity.
Then the numbers that have been derived can be used for length testing and breadth 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.
Since cyclomatic complexity is not easily understood by everyone, there are many tools that can help you out with it. Here are the important things you should remember to help you decide which tool can help you out.
Always read through the comments and reviews section of each cyclomatic complexity tool you have stumbled upon. It is a good way for you to learn what previous and current clients think about their service and their cyclomatic complexity tool. Check to see complaints and if they were resolved.
It is better if you choose a cyclomatic complexity tool that was designed to function for different clients from different industries. Ask their support staff about the challenges they faced during their work and how they were able to solve it.
The last tip is to ask price quotations from each of the companies’ you have chosen since their cyclomatic complexity tools are not for free. Identify your budget and shortlist those who are able to meet it.
Note that the most successful businesses and individuals seek help from developers offering cyclomatic complexity tools to be up to date.
Make sure that you research a lot about cyclomatic complexity so that you will be able to understand it in no time.