In this post, I want to discuss how to measure our module’s external complexity with our test suite.

To demonstrate that:

1. I used StreamData to write a property-based test for a Fibonacci function.
2. I wrote two different implementations for the Fibonacci function, to explain the differences between internal and external complexity.

Finally, I reached a conclusion that different test styles are just different perspectives of understanding our code, and this idea aligns with the idea of complexity measurement pretty well.

https://dsdshcym.github.io/blog/2019/03/12/test-suite-as-a-complexity-measuring-tool/