CppUTest

Based on CppUnitLite, CppUTest represents a unit testing and mocking framework. Although its written in C++, it can be used not only for C++, but also for C projects.
The tool is designed to facilitate a lightweight, simple and intuitive design, along with compatibility for both old and new platforms (including embedded systems). Made with test-driven development in mind, it utilizes just the necessary and suffice C++ features to help you with your work.
Aside from the source code, the downloaded package includes examples, tests and user documentation, together with a manual on how to install and deploy the framework on all supported platforms. Former CppTestTools users have to make a few changes to the code to convert it into CppUTest.
Common test macros can be created for defining a test - TEST(group, name), turning off a tests execution - IGNORE_TEST(group, name), declaring a test group to which other tests belong to and creating the link required from another library - TEST_GROUP(group), defining a test with a base class different than Utest - TEST_GROUP_BASE(group, base), as well as for exporting a test groups name to link it from another library - IMPORT_TEST_GROUP(group).
There are also source and pre-packaged editions available for Linux (Debian and Ubuntu) and Mac OS X (Homebrew).