Defining a unit test and linking against Boost test

The code for this recipe is available at https://github.com/dev-cafe/cmake-cookbook/tree/v1.0/chapter-04/recipe-04, and has a C++ example. The recipe is valid with CMake version 3.5 (and higher), and has been tested on GNU/Linux, macOS, and Windows.

Boost test is another very popular unit testing framework in the C++ community, and in this example, we will demonstrate how to unit test our familiar summing example code using Boost test.

Getting ready

We will keep the main.cpp, sum_integers.cpp, and sum_integers.hpp unchanged from the previous recipes, but we will update test.cpp as a minimal example of a unit test using the Boost test library:

#include "sum_integers.hpp...