Patterns in the Machine: A Software Engineering Guide to Embedded Development

© John T. Taylor, Wayne T. Taylor 2021

J. T. Taylor, W. T. TaylorPatterns in the Machinehttps://doi.org/10.1007/978-1-4842-6440-9_6

6. Unit Testing

John T. Taylor¹   and Wayne T. Taylor²

(1)

Covington, GA, USA

(2)

Golden, CO, USA

 

PIM defines a unit test as demonstrable evidence that an individual module works in isolation and that it meets all requirements and the design criteria. In this context, an “individual module” means a header file (.h) and its corresponding implementation file (.c or .cpp). If you’re programming in C++, this means that essentially every class will require a corresponding unit test. In C, most of your functions will require unit tests.

I know this can sound overwhelming. If you have to write a unit test for every class, it seems ...