Create test for object

[timiTao]

we need to create tests for calling all figures and test all functions

• area
• circumference

For spatial, additionally:

• volume

For now, it should be easy with Behat and simple console. Read about

http://behat.readthedocs.org/en/v3.0/

Do this after

sakuya213/nauka-c-plus-plus#10