public void LTTest()
 {
     LinqToSparqlExpTranslator<Track> target = new LinqToSparqlExpTranslator<Track>();
     target.TypeTranslator = new XsdtTypeConverter();
     Expression e = Expression.LessThan(Expression.Constant(10), Expression.Constant(15));
     StringBuilder sb = new StringBuilder();
     target.StringBuilder = sb;
     target.LessThan(e);
     string actualResult = sb.ToString();
     string expectedResult = "(10)<(15)";
     Assert.AreEqual(expectedResult, actualResult);
 }