Code Coverage
Code Coverage is basically a measurement to measure a degree to which the source code of a program is executed when a particular test suite runs.
To read more about it check out:
https://confluence.atlassian.com/clover/about-code-coverage-71599496.html
https://stackoverflow.com/questions/195008/what-is-code-coverage-and-how-do-you-measure-it
https://en.wikipedia.org/wiki/Code_coverage
etc.
Here I have made a basic XOR neural net in numpy. So there are two python codes predict.py and testr.py. The first one is where I have made the neural net code and in testr.py I import that function to do code coverage.
Check out the code: