public void RemoveAtTest()
{
ExpressionList<ConstantTypes.Integer> list = new ExpressionList<ConstantTypes.Integer>();
list.Add(new ConstantTypes.Integer(0));
var one = new ConstantTypes.Integer(1);
list.Add(one);
Assert.IsTrue(list.Count == 2);
Assert.IsTrue(list.Contains(one));
Assert.IsTrue(1 == list[1].Value);
list.RemoveAt(1);
Assert.IsTrue(list.Count == 1);
Assert.IsTrue(!list.Contains(one));
}