Consider testing Page and Element classes

[Zales0123]

Maybe it would be worth to test somehow this Element and Page classes? 😄 I know it would require a lot of additional code and we can say, that testing these classes is using them somewhere... but more tests are always worth to consider 🐃

[pamil]

Just sayin': https://github.com/FriendsOfBehat/TestContext

[winkbrace]

If some of the stuff I built is welcome, I'll have a look into this as well. It feels awkward to make a PR without tests.. :|