adds two new phpUnitTests for the abstract MathRender class
and another one that test the basic database access.
Therefore the read and write methods have been made changed
from protected to public.
Change-Id: I77a8b0a4dfe7529b5521ead097ac7b518688ef70
Physikerwelt asked for some guidance on how to write good unit tests for
classes that depend on external resources. I wrote a few to serve as examples
for additional tests. Because they have an ulterior didactic purpose, the
comments are a bit more verbose than I would otherwise like, but despite that
the tests are good enough to merit being merged.
Change-Id: Ifa97eec1a68fb68b4744d1e5b192b410afe5ef68
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
