add conjured item

Java/src/main/java/com/gildedrose/GildedRose.java

@@ -6,6 +6,7 @@ class GildedRose {
     private static final String BACKSTAGE_PASSES = "Backstage passes to a TAFKAL80ETC concert";
     private static final String SULFURAS = "Sulfuras, Hand of Ragnaros";
     private static final String AGED_BRIE = "Aged Brie";
+    private static final String CONJURED = "Conjured Mana Cake";
 
     public GildedRose(Item[] items) {
         this.items = items;
@@ -17,7 +18,9 @@ class GildedRose {
                 updateQualityAgedBrie(item);
             } else if (item.name.equals(BACKSTAGE_PASSES)) {
                 updateQualityBackstagePasses(item);
-            } else if (!item.name.equals(SULFURAS)) {
+            } else if (item.name.equals(CONJURED)) {
+                updateQualityConjured(item);
+            }else if (!item.name.equals(SULFURAS)) {
                 updateQualityOtherItems(item);
             }
         }
@@ -59,6 +62,16 @@ class GildedRose {
         }
     }
 
+    private void updateQualityConjured(Item item) {
+        if (item.quality > 0) {
+            item.quality -= 2;
+        }
+        updateSellIn(item);
+        if (item.sellIn < 0 && item.quality > 0) {
+            item.quality -= 2;
+        }
+    }
+
     private void updateSellIn(Item item) {
         if (!item.name.equals(SULFURAS)) {
             item.sellIn--;

Java/src/test/java/com/gildedrose/GildedRoseTest.java

@@ -111,6 +111,7 @@ class GildedRoseTest {
         assertEquals(-1, backstagePasses.sellIn);
     }
 
+    // Other items degrade in quality by one in one day
     @Test
     void testUpdateQualityForOtherItem() {
         var normalItem = new Item("Other Item", 10, 10);
@@ -121,4 +122,17 @@ class GildedRoseTest {
         assertEquals(9, normalItem.quality);
         assertEquals(9, normalItem.sellIn);
     }
+
+    // "Conjured" items degrade in Quality twice as fast as normal items
+    @Test
+    void testUpdateQualityForConjuredItem() {
+        var conjuredItem = new Item("Conjured Mana Cake", 10, 10);
+        GildedRose gildedRose = new GildedRose(new Item[]{conjuredItem});
+
+        gildedRose.updateQuality();
+
+        assertEquals(8, conjuredItem.quality);
+        assertEquals(9, conjuredItem.sellIn);
+    }
+
 }

Java/src/test/java/com/gildedrose/TexttestFixture.java

@@ -13,7 +13,6 @@ public class TexttestFixture {
                 new Item("Backstage passes to a TAFKAL80ETC concert", 15, 20),
                 new Item("Backstage passes to a TAFKAL80ETC concert", 10, 49),
                 new Item("Backstage passes to a TAFKAL80ETC concert", 5, 49),
-                // this conjured item does not work properly yet
                 new Item("Conjured Mana Cake", 3, 6) };
 
         GildedRose app = new GildedRose(items);