public void No_orders()
{
var itemOrders = new string[0][];
var result = TotalOrder.Calculate(itemOrders);
Assert.AreEqual(0, result.Length);
}
public void Calculate_just_one()
{
var itemOrders = new[] {
new[] { "1", "2", "3" }
};
var result = TotalOrder.Calculate(itemOrders);
Assert.AreEqual(new[] { "1", "2", "3" }, result);
}
public void Calculate_several()
{
var itemOrders = new[] {
new[] { "1", "2", "3" },
new[] { "3", "1", "2" }
};
var result = TotalOrder.Calculate(itemOrders);
// 1=0+1=1, 2=1+2=3, 3=2+0=2
Assert.AreEqual(new[] { "1", "3", "2" }, result);
}