All Implemented tests now work. Need to add tests for off files with headers nOFF, 4OFF NOFF and combinations there-off. I also need tests for the case of incompleate face-color. Lots of broken .off files need to be tested. As of now only the case with faulty Header is implemented. TODO: Refactor the implemented tests to make it easier to add more. Add more tests. After that Refactor Geometry-class and then maybe thing of implementing texture coordinates for .off file.