public void DoubleChangeWhenSellInIsLessZero()
{
var testRule = new DecreasingDeprecationRule
{
FirstApplicableDay = int.MaxValue,
Amount = 2
};
var testStock = new StockItem
{
StockTypeId = "Stock 1",
SellIn = -1,
Quality = 5
};
var service = new DecreasingDeprecationRuleService();
var result = service.RunRule(testRule, testStock);
Assert.True(result);
Assert.Equal(1, testStock.Quality);
}
public void DecreasesQualityWhenSellInIsLessThanFirstApplicableDay()
{
var testRule = new DecreasingDeprecationRule
{
FirstApplicableDay = 3,
Amount = 2
};
var testStock = new StockItem
{
StockTypeId = "Stock 1",
SellIn = 2,
Quality = 5
};
var service = new DecreasingDeprecationRuleService();
var result = service.RunRule(testRule, testStock);
Assert.True(result);
Assert.Equal(3, testStock.Quality);
}
public void NoChangeWhenSellInIsGreaterThanFirstApplicableDay()
{
var testRule = new DecreasingDeprecationRule
{
FirstApplicableDay = 3,
Amount = 2
};
var testStock = new StockItem
{
StockTypeId = "Stock 1",
SellIn = 4,
Quality = 5
};
var service = new DecreasingDeprecationRuleService();
var result = service.RunRule(testRule, testStock);
Assert.False(result);
Assert.Equal(5, testStock.Quality);
}
