public void ParseFileTypeTest()
 {
     Assert.AreEqual("xml", SyntaxHighlightingService.ParseFileType("\"xml\""));
     Assert.AreEqual("xml", SyntaxHighlightingService.ParseFileType("\".xml\""));
     Assert.AreEqual("xml", SyntaxHighlightingService.ParseFileType("\"xml\","));
     Assert.AreEqual("xml", SyntaxHighlightingService.ParseFileType("\".xml\","));
     Assert.IsTrue(string.IsNullOrEmpty(SyntaxHighlightingService.ParseFileType("\"\",")));
     Assert.IsTrue(string.IsNullOrEmpty(SyntaxHighlightingService.ParseFileType("\".\",")));
     Assert.IsTrue(string.IsNullOrEmpty(SyntaxHighlightingService.ParseFileType("}")));
 }