Software cyclomatic complexity

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To understand the importance of Cyclomatic complexity from a QA perspective, the result we get from the formula determines how much testing is required to test that piece of source code. For example, if the number is higher, that piece of code requires in-depth testing compared to the code which has lower Cyclomatic complexity. Our testing scope and the methods would be defined according to the complexity of the functionality.

The control flow graph for the code under test can be obtained from the developer to calculate the number of edges, nodes and exit points. Also, a number of test cases for maximum test coverage can be determined as well based on the paths in the CFG control flow graph and the branches.

In other words, Cyclomatic complexity is very helpful for QA to estimate the scope of testing, determine how skilled tester is required, and the extent of testing required for the best way possible code coverage. Also, it is one of the best ways with which developers can make QA team to understand the source code complexity. Cyclomatic complexity calculation is one of the standard approaches to calculate the source code complexity and determine the risk that the source code possesses for any future modification and maintenance.

Lower the Cyclomatic complexity better is the code quality in terms of complexity. If you are not a regular reader of this website then highly recommends you Sign up for our free email newsletter!! Sign up just providing your email address below:. In the given diagram you have mentioned that Edges or Nodes are specified but i am not able to locate please clarify.

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International Presence. Cyclomatic Complexity A measure of the logical complexity of an algorithm, used in white-box testing. Skip to content. Change Language. Related Articles. Table of Contents.

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