Add test for transform toString
Add test for transform toString

ahocevar/ol3,ahocevar/ol3,adube/ol3,oterral/ol3,ahocevar/openlayers,openlayers/openlayers,oterral/ol3,openlayers/openlayers,stweil/openlayers,bjornharrtell/ol3,openlayers/openlayers,stweil/ol3,adube/ol3,stweil/openlayers,ahocevar/ol3,ahocevar/ol3,oterral/ol3,adube/ol3,bjornharrtell/ol3,bjornharrtell/ol3,stweil/ol3,ahocevar/openlayers,stweil/ol3,stweil/ol3,stweil/openlayers,ahocevar/openlayers