These files are designed to test the Ruby gem itself, such that its basic tasks of library installation and compilation can be verified. (i.e., use minimal C++ files -- feature tests for C++ unittest/arduino code belong in ../TestSomething/test/).
Files in this directory are expected to have names that either contains "bad" if it is expected to fail or "good" if it is expected to pass. This provides a signal to rspec for how the code is expected to perform.