The function you want to test and refactor is called theFunctionToTest.
This isn't a particularly easy exercise. For a similar, easier one, try "SystemConfiguration" from "TestingLegacyCodeCourse" in Llewellyn Falco's 'LearnWithLlew' github user
nitsanavni/VoidFunctionNoArgs-Refactoring-Kata
exercise to practice getting a void function with no arguments under test and refactored
C++MIT