Test framework #8
Description
It would be really nice to have a test framework for all the basic functions that we have in this repository. There are already some assignment verification routines which are veyr useful for testing new algorithms (https://github.com/ghamerly/fast-kmeans/blob/master/src/kmeans.h#L46), but they are slow and must be compiled in/out.
These new things should be a set of unit tests that interfere as little with the existing code as possible. Things that live in general_functions.h should all be tested, including distances and initialization routines. Dataset should have tests. Any subclass of Kmeans should support such a unit test for itself. Then we can go through instances of subclasses of Kmeans and test them all using virtual methods.