Experiments with unit tests for embedded software

This repo contains simple unit tests to demonstrate how to use the following frameworks for unit-testing embedded applications.

• CMock
• Fake Function Framework
• cmocka
• Unity

Also contained here are some basic github workflows.

Here's how you build and run the unit tests.

Cmake Configure

cmake .

Building

make

Running the tests

ctest

Architecture diagram

Below is the architecture diagram showing the unit under test and its dependent modules. In this repo, there are tests suites that mock the dependencies and test the APIs exposed by led.h. The tests can be found under examples folder. The names of the folders indicate the mocking framework that is used.

                               +----------+
                               |   led.c  |   -> Unit under test
                               +----------+
                              /     |     \
                             /      |      \
                            /       |       \
                           /        |        \
          +-----------------+  +----------+  +------------+
          | variadic_module |  |   gpio   |  | get_inline |-> Dependencies that will be mocked
          +-----------------+  +----------+  +------------+