public void ShouldDecreaseSellInTimeAfterEachUpdate()
{
// arrange
var sellIn = 10;
var quality = 20;
var item = new DegradingItem("item", sellIn, quality);
// act
item.Update();
// assert
Assert.Equal(sellIn - 1, item.SellIn);
}
public void ShouldDegradeItemQualityTwiceAsFastAfterSellIn()
{
// arrange
var sellIn = 0;
var quality = 20;
var item = new DegradingItem("item", sellIn, quality);
// act
item.Update();
// assert
Assert.Equal(quality - 2, item.Quality);
}
public void ShouldNotDegradeQualityBelowZero()
{
// arrange
var sellIn = 10;
var quality = 0;
var item = new DegradingItem("item", sellIn, quality);
// act
item.Update();
// assert
Assert.Equal(quality, item.Quality);
}
public void ShouldDegradeItemQualityAfterEachUpdate()
{
// arrange
var sellIn = 10;
var quality = 20;
var item = new DegradingItem("item", sellIn, quality);
// act
item.Update();
// assert
Assert.Equal(quality - 1, item.Quality);
}