Unit testing
Unit testing is the process of testing units of code by using a test framework that provides infrastructure for setting up tests, running them, and reporting them. So, what is a unit of code? It depends on what we want to test; it can be a function or a software module, or we can reason about unit testing as testing a unit of work. What does the firmware need to do if a user presses a button, or what does it need to do if we receive a specific packet over a Bluetooth® Low Energy (BLE) connection?
Depending on the granularity of unit testing, we can test different components of firmware on the individual level and their interaction to ensure proper functionality. Unit tests test the units of code or units of work in isolation from other software components. This forces us to focus on the functionality of said units during the development and split the responsibilities between components more easily, leading to more robust software.
Most of the C++ testing...
