public void upperbound_rule_should_pass_for_30_percent_or_less()
{
UpperBoundRule rule = new UpperBoundRule();
RedPencilItem item = new RedPencilItem(100.00m);
Assert.IsTrue(rule.Process(item, 70.00m ));
}
private RedPencilItem endPromotion(RedPencilItem item)
{
item.PromotionEndDate = DateTime.Now;
item.MarkedDownPrice = null;
return item;
}
public bool Process(RedPencilItem item, decimal newPrice)
{
if (!item.PromotionEndDate.HasValue)
return true;
return DateTime.Now.Subtract(item.PromotionEndDate.Value).Days >= 30;
}
public void stable_price_rule_false_for_end_date_younger_than_30_days()
{
RedPencilItem item = new RedPencilItem(100.00m);
item.PromotionEndDate = DateTime.Now.AddDays(-15);
Assert.IsFalse(new StablePriceRule().Process(item, 100.0m));
}
public void price_change_should_trigger_promotion()
{
RedPencilItem item = new RedPencilItem(100.00m);
item = _engine.ChangePrice(item, 90.00m);
Assert.IsTrue(item.PromotionStartDate.HasValue);
Assert.IsTrue(item.PromotionEndDate.HasValue);
}
private RedPencilItem startPromotion(RedPencilItem item, decimal newPrice)
{
item.MarkedDownPrice = newPrice;
item.PromotionStartDate = DateTime.Now;
item.PromotionEndDate = item.PromotionStartDate.Value.AddDays(30);
return item;
}
public bool Process(RedPencilItem item, decimal newPrice)
{
if (item.MarkedDownPrice.HasValue)
{
return newPrice > item.MarkedDownPrice.Value;
}
return newPrice > item.OriginalPrice;
}
public void invalid_price_reduction_during_promotion_ends_promotion()
{
RedPencilItem item = new RedPencilItem(100.00m);
item = _engine.ChangePrice(item, 91.00m);
item = _engine.ChangePrice(item, 69.99m);
Assert.IsFalse(item.MarkedDownPrice.HasValue);
Assert.IsTrue(item.PromotionEndDate.HasValue);
}
public void price_change_must_be_equal_to_or_less_than_thirty_percent_of_original()
{
RedPencilItem item = new RedPencilItem(100.00m);
item = _engine.ChangePrice(item, 70.00m);
Assert.IsTrue(item.MarkedDownPrice.HasValue);
RedPencilItem item2 = new RedPencilItem(100.00m);
item2 = _engine.ChangePrice(item2, 69.99m);
Assert.IsFalse(item2.MarkedDownPrice.HasValue);
}
public void price_increase_during_promotion_ends_promotion()
{
RedPencilItem item = new RedPencilItem(100.00m);
item = _engine.ChangePrice(item, 89.00m);
Assert.IsTrue(item.MarkedDownPrice.HasValue);
item = _engine.ChangePrice(item, 91.00m);
Assert.IsFalse(item.MarkedDownPrice.HasValue);
}
public void price_change_must_be_five_percent_or_greater_of_original()
{
RedPencilItem item = new RedPencilItem(100.00m);
item = _engine.ChangePrice(item, 96.00m);
Assert.IsFalse(item.MarkedDownPrice.HasValue);
RedPencilItem item2 = new RedPencilItem(100.00m);
item2 = _engine.ChangePrice(item2, 95.01m);
Assert.IsFalse(item2.MarkedDownPrice.HasValue);
RedPencilItem item3 = new RedPencilItem(100.00m);
item3 = _engine.ChangePrice(item3, 94.99m);
Assert.IsTrue(item3.MarkedDownPrice.HasValue);
}
public RedPencilItem ChangePrice(RedPencilItem item, decimal newPrice)
{
if (_startRules.All(x => x.Process(item, newPrice)))
{
return startPromotion(item, newPrice);
}
if (_endRules.All(x => x.Process(item, newPrice)))
{
return endPromotion(item);
}
if (_endRules2.Any(x => !x.Process(item, newPrice)))
{
return endPromotion(item);
}
if (_continueRules.All(x => x.Process(item, newPrice)))
{
return continuePromotion(item, newPrice);
}
return item;
}
public void stable_price_rule_is_true_for_null_end_date()
{
RedPencilItem item = new RedPencilItem(100.00m);
Assert.IsTrue(new StablePriceRule().Process(item, 100.00m));
}
public void price_increase_rule_should_return_true_for_increase()
{
RedPencilItem item = new RedPencilItem(100.00m);
Assert.IsTrue(new PriceIncreaseRule().Process(item, 101.00m));
}
public void lowerbound_rule_should_pass_for_5_percent_or_greater()
{
RedPencilItem item = new RedPencilItem(100.00m);
Assert.IsTrue(new LowerBoundRule().Process(item, 95.00m));
}
public void lowerbound_rule_shoud_fail_for_less_than_5_percent()
{
RedPencilItem item = new RedPencilItem(100.00m);
Assert.IsFalse(new LowerBoundRule().Process(item, 96.66m));
}
public bool Process(RedPencilItem item, decimal newPrice)
{
return honorsUpperBound(item.OriginalPrice, newPrice);
}
private RedPencilItem continuePromotion(RedPencilItem item, decimal newPrice)
{
item.MarkedDownPrice = newPrice;
return item;
}
public void valid_price_reduction_during_promotion_does_not_extend_promotion()
{
RedPencilItem item = new RedPencilItem(100.00m);
item = _engine.ChangePrice(item, 95.00m);
DateTime origEndDate = item.PromotionEndDate.Value;
item = _engine.ChangePrice(item, 90.00m);
Assert.AreEqual(origEndDate, item.PromotionEndDate.Value);
}
public void promotion_start_and_end_date_should_be_30_days_apart()
{
RedPencilItem item = new RedPencilItem(100.00m);
item = _engine.ChangePrice(item, 90.00m);
TimeSpan dateDiff = item.PromotionEndDate.Value.Subtract(item.PromotionStartDate.Value);
Assert.AreEqual(30, dateDiff.Days);
}
public void newly_created_item_has_nulled_markdown_price()
{
RedPencilItem item = new RedPencilItem(100.00m);
Assert.IsFalse(item.MarkedDownPrice.HasValue);
}
public void can_change_price()
{
RedPencilItem item = new RedPencilItem(100.00m);
item = _engine.ChangePrice(item, 90.00m);
Assert.AreEqual(90.00m, item.MarkedDownPrice.Value);
}
public void uppoerbound_rule_should_fail_for_more_than_30_percent()
{
RedPencilItem item = new RedPencilItem(100.00m);
Assert.IsFalse(new UpperBoundRule().Process(item, 69.99m));
}
public void can_create_entity_with_price()
{
RedPencilItem item = new RedPencilItem(100.00m);
Assert.AreEqual(100.00m, item.OriginalPrice);
}
