[FUNCTOR-12] Added more tests to core comparator classes. Also removed unreachable code, as it could not be tested and was immutable and created/validated during construction.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/functor/trunk@1365328 13f79535-47bb-0310-9956-ffa450edef68
8 files changed