Test fixture requires an empty constructor

[bcooksey]

When trying to use googletest's fixture for the zone unit tests, I had to define an empty constructor on the Zone class to get the test suite to compile. Trying to use the real constructor in the fixture class gave either "constant expression not allowed" ( Zone z1 = ... ) or "expected identifier before ''" ( Zone z1(...) ).

I believe there is a way to correctly use the real constructor and not need the empty version.