Test was not executed, because it did not start with 'test'. Change-Id: Ie5e14b0a23da6a908781f9a2f17dcd6c7795bebe
This change adds test cases for the MathSource class and registers a hook for loading these tests. Also adds documentation about how to run these tests in README. Change-Id: Ie58a273326e0353dfa4437b3de21a2393adb5a87