Usage of generator-mocha

[jihadrhamza]

Am looking for generating mocha test case automcatically from javascript files. I have one folder contains number of js files and I want to generate test cases for each functions present in that. I used yo mocha command, but it creates spec folder without any mentioning of my functions, present in the js modules.
How to create test suit for my functions from javascript file using yo mocha?

Thanks
Jihad Hamza