Add test with standard lib
Add test with standard lib

math.cos( should return <Param: x @0,0>

jonashaag/jedi,tjwei/jedi,dwillmer/jedi,flurischt/jedi,mfussenegger/jedi,jonashaag/jedi,flurischt/jedi,tjwei/jedi,mfussenegger/jedi,dwillmer/jedi,WoLpH/jedi,WoLpH/jedi