Extend cpdef method test to cover some more (non-)override cases.
Extend cpdef method test to cover some more (non-)override cases.

scoder/cython,da-woods/cython,cython/cython,scoder/cython,scoder/cython,cython/cython,cython/cython,cython/cython,da-woods/cython,da-woods/cython,scoder/cython,da-woods/cython