[utils] added some basic tests
[utils] added some basic tests


Former-commit-id: 7cf1eabd07e06c68ea3d45a1b29afece7833594f
Former-commit-id: d2b8d1946b3da0af9b6b8d2efb32e06a1317c241
pygeo/pycmbs,pygeo/pycmbs