public void ChangeItem()
{
var sut = new TestAggregate(100);
sut.AddItem("Description", 1, 10.00, true);
sut.ChangeItem(1, "New Description");
sut.ChangeItem(1, 10);
Assert.AreEqual(4, sut.Events.Count, "Events");
Assert.AreEqual(4, sut.Version, "Version");
Assert.AreEqual(1, sut.Items.Count, "Items");
Assert.AreEqual("New Description", sut.Items[0].Description, "Description");
Assert.AreEqual(10, sut.Items[0].Quantity, "Quantity");
}
