remove @ignore anotiation from tests

enables more tests. 

This **WILL** fail on travis.
Better not to merge it right now, I'm working on it.
This is maybe wrong. I guess this is not a test which will be called by the testing framework but instead will be called by another test.
Maybe @L-Henke can make this clear.

This is one thing what I wanted to ask in #125 which has been merged.