public void EvaluateMathHeadTailToList()
{
this.EvaluateExpression("[Buy|ThingsToBuy] = [{oranges,4},{newspaper,1},{apples,10},{pears,6},{milk,3}].");
Assert.AreEqual("{oranges,4}", this.context.GetValue("Buy").ToString());
Assert.AreEqual("[{newspaper,1},{apples,10},{pears,6},{milk,3}]", this.context.GetValue("ThingsToBuy").ToString());
}