Running unit tests on nested functions

Question

I come from the Java world, where you can hide variables and functions and then run unit tests against them using reflection. I have used nested functions to hide implement

Answer 1

I had the same doubt and found a way to get tests going for inner functions.

def outer():
    def inner():
        pass

    if __debug__:
        test_inner(inner)
        # return

def test_inner(f):
     f() # this calls the inner function

outer()

Basically you can send the inner function as a parameter to the outside and test it as you wish. When calling outer(), your test will run, and since it's a closure, it will preserve any extra property from the outer function (like variables). Using a list, you can send as many functions as you wish. To ignore the if, an option is to run the code like that:

python -O code.py