Added 2 tests for methodValues and fieldValues functionality.

The tests cover both the matching case (field/method is of
expected type) as well as the non matching case.

Removed static class ManyMethod (an unused fixture).
Taking hasItem from CoreMatchers API, instead of from hamcrest.core
Merge pull request #724 from avandeursen/testclass

Refactoring of TestClassTest, and adding 2 new test cases.