Cgreen is a framework for unittests and mocking in C and C++. You can visit GitHub for more info.
Cgreen is mostly C99-compatible and can be compiled on most platforms that support messaging.
Packaging to a MacOSX package can easily be done with the Makefile in this little project.
The variable VERSION in the Makefile can be changed to define which version/release that will be automatically downloaded from GitHub and built. It should be the exact name of the release tag. It also controls the name of the resulting package.
Then just do
make
NOTE: You need CMake to compile Cgreen.