Added test that verifies Engine gets called with correct Filepath
Added test that verifies Engine gets called with correct Filepath

chrisjowen/nLess,r2i-sitecore/dotless,dotless/dotless,modulexcite/dotless,r2i-sitecore/dotless,modulexcite/dotless,modulexcite/dotless,chrisjowen/nLess,dotless/dotless,r2i-sitecore/dotless,rytmis/dotless,modulexcite/dotless,rytmis/dotless,NickCraver/dotless,modulexcite/dotless,NickCraver/dotless,r2i-sitecore/dotless,rytmis/dotless,modulexcite/dotless,modulexcite/dotless,rytmis/dotless,NickCraver/dotless,NickCraver/dotless,r2i-sitecore/dotless,chrisjowen/nLess,rytmis/dotless,rytmis/dotless,r2i-sitecore/dotless,rytmis/dotless,chrisjowen/nLess,r2i-sitecore/dotless