public void CheesePriceForDay_ShouldReturnNull_GivenNoDateRecieved()
{
Cheese cheese = new Cheese {
Name = "test", Price = 100M
};
Assert.Null(cheese.PriceForDay(DateTime.Now));
}
public void CheesePriceForDay_ShouldReturnMax_GivenPriceOverMax()
{
Cheese cheese = new Cheese {
Name = "test", Price = 100M, DateRecieved = DateTime.Now
};
Assert.Equal(CheeseConstants.MAX_PRICE, cheese.PriceForDay(DateTime.Now));
}
public void CheesePriceForDay_ShouldReturnNull_GivenNullPrice()
{
Cheese cheese = new Cheese {
Name = "test"
};
Assert.Null(cheese.PriceForDay(DateTime.Now));
}
public void StandardCheesePriceForDay_ShouldLooseTwicePercent_GivenTwoDayOld()
{
var dateRecieved = DateTime.Now;
var price = 10M;
Cheese cheese = new Cheese {
Name = "test", Price = price, Type = CheeseType.Standard, DateRecieved = dateRecieved
};
var expectedPrice = price + price * CheeseConstants.STANARD_PRICE_DECREASE_RATE * 2;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(2)));
}
public void StandardCheesePriceForDay_ShouldLoosePercent_GivenOneDayOldAndPriceOriginallyOverMax()
{
var dateRecieved = DateTime.Now;
var price = CheeseConstants.MAX_PRICE + 1M;
Cheese cheese = new Cheese {
Name = "test", Price = price, Type = CheeseType.Standard, DateRecieved = dateRecieved
};
var expectedPrice = price + price * CheeseConstants.STANARD_PRICE_DECREASE_RATE;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(1)));
}
public void UniqueCheesePriceForDay_ShouldNotChange_GivenOneDayOld()
{
var dateRecieved = DateTime.Now;
var price = 10M;
Cheese cheese = new Cheese {
Name = "test", Price = price, Type = CheeseType.Unique, DateRecieved = dateRecieved
};
var expectedPrice = price;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(1)));
}
public void FreshCheesePriceForDay_ShouldDecreasePercent_GivenOneDayOld()
{
var dateRecieved = DateTime.Now;
var price = 10M;
Cheese cheese = new Cheese {
Name = "test", Price = price, Type = CheeseType.Fresh, DateRecieved = dateRecieved
};
var expectedPrice = price + price * CheeseConstants.FRESH_PRICE_DECREASE_RATE;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(1)));
}
public void StandardCheesePriceForDay_ShouldBeZero_GivenNegativePrice()
{
var dateRecieved = DateTime.Now;
var price = -10M;
Cheese cheese = new Cheese {
Name = "test", Price = price, Type = CheeseType.Standard, DateRecieved = dateRecieved
};
var expectedPrice = 0M;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(2)));
}
public void SpecialCheesePriceForDay_ShouldIncreasePercent_GivenSixDaysToSell()
{
var dateRecieved = DateTime.Now;
var price = 10M;
Cheese cheese = new Cheese {
Name = "test",
Price = price,
Type = CheeseType.Special,
DateRecieved = dateRecieved,
DaysToSell = 7
};
var expectedPrice = price + price * CheeseConstants.SPECIAL_PRICE_INCREASE_RATE;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(1)));
}
public void AgedCheesePriceForDay_ShouldIncreasePercent_GivenPassedBestBeforeDate()
{
var dateRecieved = DateTime.Now;
var price = 10M;
Cheese cheese = new Cheese
{
Name = "test",
Price = price,
Type = CheeseType.Aged,
DateRecieved = dateRecieved,
BestBeforeDate = dateRecieved
};
var expectedPrice = price + price * CheeseConstants.AGED_PRICE_INCREASE_RATE;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(1)));
}
public void StandardCheesePriceForDay_ShouldLoosePercent_GivenOneDayOldAndBeforeBestBeforeDateAndBeforeDaysToSell()
{
var dateRecieved = DateTime.Now;
var price = 10M;
Cheese cheese = new Cheese
{
Name = "test",
Price = price,
Type = CheeseType.Standard,
DateRecieved = dateRecieved,
BestBeforeDate = dateRecieved.AddDays(2),
DaysToSell = 5
};
var expectedPrice = price + price * CheeseConstants.STANARD_PRICE_DECREASE_RATE;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(1)));
}
public void UniqueCheesePriceForDay_ShouldNotChange_GivenPassedDaysToSell()
{
var dateRecieved = DateTime.Now;
var price = 10M;
Cheese cheese = new Cheese
{
Name = "test",
Price = price,
Type = CheeseType.Unique,
DateRecieved = dateRecieved,
BestBeforeDate = dateRecieved,
DaysToSell = 1
};
var expectedPrice = price;
Assert.Equal(expectedPrice, cheese.PriceForDay(dateRecieved.AddDays(10)));
}
public void StandardCheesePriceForDay_ShouldBeNull_GivenPassedDaysToSell()
{
var dateRecieved = DateTime.Now;
var price = 10M;
var daysToSell = 2;
Cheese cheese = new Cheese
{
Name = "test",
Price = price,
Type = CheeseType.Standard,
DaysToSell = daysToSell,
DateRecieved = dateRecieved,
BestBeforeDate = dateRecieved
};
Assert.Null(cheese.PriceForDay(dateRecieved.AddDays(daysToSell + 1)));
}
