python - How to unit test a function that does not return anything? -

is possible find values of local variables in function mocking?

class a:   def f(self):     = 5000 * 10     b().somefunction(a) 

how write unit test function? have mocked somefunction not want testing scope go outside block. way can test rest of function checking if value of variable 50000 @ end of function. how do this?

with interaction testing, check value somefunction called with. happens inside function, should tested in unit test of function.