public void SetChoiceText_Test()
{
var itm = new CustomItem();
itm.SetChoice(i => i.CustomChoice, "The Choice Number Two");
Assert.That(itm.CustomChoice, Is.EqualTo(TheChoice.Choice2));
itm.SetChoice(i => i.CustomChoice, "Choice3");
Assert.That(itm.CustomChoice, Is.EqualTo(TheChoice.Choice3));
}