public void SimpleTest()
{
var sdf = new SimpleDf("sdf");
sdf.preferedType["id"] = SdfColType.dfint;
sdf.preferedType["dt"] = SdfColType.dfdatetime;
sdf.preferedFormat["dt"] = "yyyy-MM-dd HH:mm:ss";
sdf.preferedSubstitute["dt"] = ("+00", "");
sdf.ReadCsv(sdflines);
Assert.True(sdf.Nrow() == 3);
Assert.True(sdf.Ncol() == 5);
Assert.True(sdf.InfoClassStr() == "Classes:id:dfint,x:dfdouble,y:dfdouble,dt:dfdatetime,n:dfstring");
Assert.True(sdf.GetIntCol("id").Sum() == 6);
Assert.True(sdf.GetDoubleCol("x").Sum() == 6);
Assert.True(sdf.GetDoubleCol("y").Sum() == 9);
Assert.True(sdf.DataErrors() == 0);
// Use the Assert class to test conditions
}