public void ChoiceWorks()
{
var enm = Enumerable.Choice("a", "b", "c", "d");
int count = 0;
foreach (var x in enm)
{
Assert.IsTrue(x == "a" || x == "b" || x == "c" || x == "d", "Value should be one of the choices");
if (count++ > 10)
{
break;
}
}
}
