@Test
public void updateQuality_degradesTwiceFasterWhenSellInIsZero() {
Item[] items = new Item[] {new Item("foo", 1, 20)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(19, app.items[0].quality);
app.updateQuality();
assertEquals(17, app.items[0].quality);
}
@Test
public void updateQuality_appIsInitializedWithItems() {
Item[] items = new Item[] {new Item("foo", 0, 0)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals("foo", app.items[0].name);
}
@Test
public void updateQuality_qualityNeverHigherThan50() {
Item[] items = new Item[] {new Item("Aged Brie", 10, 50)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(50, app.items[0].quality);
}
@Test
public void updateQuality_agedBriedIncreasesQuality() {
Item[] items = new Item[] {new Item("Aged Brie", 10, 10)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(11, app.items[0].quality);
}
@Test
public void updateQuality_qualityNeverNegative() {
Item[] items = new Item[] {new Item("foo", 0, 0)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(0, app.items[0].quality);
}
@Test
public void updateQuality_decreasesQuality() {
Item[] items = new Item[] {new Item("foo", 2, 2)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(1, app.items[0].quality);
}
@Test
public void updateQuality_backstageDropsToZeroWhenSellInIsZero() {
Item[] items = new Item[] {new Item("Backstage passes to a TAFKAL80ETC concert", 0, 10)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(0, app.items[0].quality);
}
@Test
public void updateQuality_sulfurasNeverChange() {
Item[] items = new Item[] {new Item("Sulfuras, Hand of Ragnaros", 10, 20)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(10, app.items[0].sellIn);
assertEquals(20, app.items[0].quality);
}
@Test
public void updateQuality_conjuredDegradesTwiceAsNormal() {
Item[] items = new Item[] {new Item("Conjured", 10, 10), new Item("Conjured", 0, 10)};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(8, app.items[0].quality);
assertEquals(6, app.items[1].quality);
}
@Test
public void updateQuality_backstageIncreasesQualityBy2WhenSellInIs10orLess() {
Item[] items =
new Item[] {
new Item("Backstage passes to a TAFKAL80ETC concert", 10, 10),
new Item("Backstage passes to a TAFKAL80ETC concert", 6, 10)
};
GildedRose app = new GildedRose(items);
app.updateQuality();
assertEquals(12, app.items[0].quality);
assertEquals(12, app.items[1].quality);
}