public void QualityDegradesDoubleWhenSellInPassed(int quality)
{
bool sellInPassed = true;
int expectedDegradedQuality = quality - (QUALITY_DEGRADES_BY * SELLIN_PASSED_MULTIPLIER);
int degradedQuality = InventoryManagementRules.GetDegradedQuality(quality, sellInPassed);
Assert.Equal(expectedDegradedQuality, degradedQuality);
}
public void QualityDegradesNormallyWhenSellInNotPassed(int quality)
{
bool sellInPassed = false;
int exectedDegradedQuality = quality - QUALITY_DEGRADES_BY;
int degradedQuality = InventoryManagementRules.GetDegradedQuality(quality, sellInPassed);
Assert.Equal(exectedDegradedQuality, degradedQuality);
}
// int.Min rolls over to positive and causes quality to degrade at lower rate (but we aren't manually reducing sellIn in this method, again 6 million years, that's fine)
public void QualityDecreases(int sellIn, int quality)
{
var normalItem = new FinestGood(NORMAL_ITEM_NAME, sellIn, quality);
bool sellInPassed = InventoryManagementRules.HasSellInPassed(sellIn);
int expectedQuality = InventoryManagementRules.GetDegradedQuality(quality, sellInPassed);
new NormalItemUpdaterRuleset().ApplyUpdates(normalItem);
Assert.Equal(expectedQuality, normalItem.Quality);
}