add error message test
add error message test

kpreisser/TypeScript,nojvek/TypeScript,SaschaNaz/TypeScript,SaschaNaz/TypeScript,basarat/TypeScript,TukekeSoft/TypeScript,donaldpipowitch/TypeScript,TukekeSoft/TypeScript,RyanCavanaugh/TypeScript,minestarks/TypeScript,Microsoft/TypeScript,alexeagle/TypeScript,microsoft/TypeScript,Eyas/TypeScript,Eyas/TypeScript,basarat/TypeScript,RyanCavanaugh/TypeScript,weswigham/TypeScript,SaschaNaz/TypeScript,minestarks/TypeScript,kpreisser/TypeScript,RyanCavanaugh/TypeScript,SaschaNaz/TypeScript,microsoft/TypeScript,Eyas/TypeScript,Microsoft/TypeScript,donaldpipowitch/TypeScript,nojvek/TypeScript,weswigham/TypeScript,TukekeSoft/TypeScript,donaldpipowitch/TypeScript,kitsonk/TypeScript,kpreisser/TypeScript,kitsonk/TypeScript,nojvek/TypeScript,kitsonk/TypeScript,donaldpipowitch/TypeScript,Microsoft/TypeScript,alexeagle/TypeScript,minestarks/TypeScript,basarat/TypeScript,nojvek/TypeScript,basarat/TypeScript,Eyas/TypeScript,alexeagle/TypeScript,microsoft/TypeScript,weswigham/TypeScript