public void AddAEmpty()
 {
     Assert.AreEqual(String.Empty, Query.AddDates(String.Empty, String.Empty));
 }
 public void AddAOnlyFrom()
 {
     Assert.AreEqual("AND rapportradDatum>='2011-02-02'", Query.AddDates("2011-02-02", String.Empty));
 }
 public void AddAOnlyTo()
 {
     Assert.AreEqual("AND rapportradDatum<='2011-02-03'", Query.AddDates(String.Empty, "2011-02-03"));
 }
 public void AddATwoDates()
 {
     Assert.AreEqual("AND rapportradDatum>='2011-02-02' AND rapportradDatum<='2011-02-03'", Query.AddDates("2011-02-02", "2011-02-03"));
 }