[t] Added tests for substr(Int, StrPos) and substr(Int, StrLen)
[t] Added tests for substr(Int, StrPos) and substr(Int, StrLen)


git-svn-id: 53605643c415f7495558be95614cf14171f1db78@25050 c213334d-75ef-0310-aa23-eaa082d1ae64

dogbert17/roast,skids/roast,cygx/roast,laben/roast,laben/roast,b2gills/roast,skids/roast,perl6/roast,dankogai/roast,zostay/roast,skids/roast,niner/roast,b2gills/roast,dankogai/roast,bitrauser/roast,bitrauser/roast,zostay/roast,niner/roast,b2gills/roast,cygx/roast,dogbert17/roast,dankogai/roast,laben/roast,niner/roast,cygx/roast,zostay/roast