public void WhitelistNames()
{
var exps = SortExpression.Parse("This, That, [The Other]");
Assert.AreEqual(3, exps.Length);
var wl = exps.Whitelist("this");
Assert.AreEqual(1, wl.Count());
wl = exps.Whitelist("Tangy");
Assert.AreEqual(0, wl.Count());
wl = exps.Whitelist("The Other", "That"," [the other] ");
Assert.AreEqual(2, wl.Count());
}