An Example Using Ceedling and CMock to Mock Embedded Hardware

This is the companion to my blog available here: http://www.electronvector.com/blog/mocking-embedded-hardware-interfaces-with-ceedling-and-cmock

It provides an example for using Ceedling and CMock to generate mocks for embedded hardware. This lets us compile and run our tests independently on our host machine.

Requirements

Rake is required for executing the tests. It's generally installed as a part of a Ruby installation.

Running the Tests

Run the tests with: rake test:all

Source

The source files are in the src folder. There is one module named tempSensor which implements an interface to an I2C temperature sensor. There is an i2c.h file which is used to generate mocks for the processor I2C hardware.

Tests

The tempSensor module is tested with the test/test_tempSensor.c file.

Vagrant

The included Vagrantfile can be used to launch an environment capable of building the tests. To launch the environment, run: vagrant up. Once the evironment has loaded, connect to it with: vagrant ssh.