An example of an object to test.

example_object_to_test.py

from src.imported_class import SomeClassOutOfOurControl


class SomeObjectToTest:
    some_property = 5
    some_other_property = 10

    def __init__(self):
        self.calculator = SomeClassOutOfOurControl()

    def do_something(self, custom_calculator):
        return custom_calculator.add(self.some_property, self.some_other_property)

    def do_something_else(self):
        return self.calculator.add(self.some_property, self.some_other_property)