In this chapter, we learned about why testing is important, the different methodologies regarding software testing, and how to write tests using pytest, and we looked at some concepts and tools to use when refactoring code.

In the next chapter, we will take our simulated components and actually write the code to simulate a portion of the schematic drawing from Chapter 7, Writing the Imported Program, the diagram entitled Project schematic diagram. We will also write some tests to verify that the functionality of the simulation works correctly.