The complexity of code or function is what you call a cyclomatic complexity. This is based on the idea that the more complex the code, the less reliable it is, and the more thoroughly it needs to be tested. It is like counting each of the 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. This translates to the number of decisions + one.
Then the numbers that have been derived can be used for length testing and breadth testing. Length testing is when you try to cover the whole concept by selecting the key 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.
Make sure to read the comments and review section of the website or page of the company offering the tool for cyclomatic complexity. This will help you learn more about the cyclomatic complexity tool since you will get a first-hand opinion from their previous and current clients. Check if there are no complaints and if the complaint was 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. Pick out those who are able to meet your budget.
Keep in mind that well-known developers offering cyclomatic complexity tools always make sure that each of their clients becomes successful so that they will be referred more.
Make sure to do thorough research and for sure you will be able to fully utilize the cyclomatic complexity.