added conjured item

Inventory.java

@@ -15,6 +15,8 @@ public class Inventory {
                 updateQualityForBrie(i);
             }else if(items[i].getName().equals("Sulfuras, Hand of Ragnaros")){
                 continue;
+            }else if(items[i].getName().equals("Conjured Item: Thori'dal, the Stars' Fury")){
+                updateQualityConjuredItems(i);
             }else if((items[i].getQuality() > 0)){              
                 updateQualityForOtherItems(i);               
             }
@@ -66,5 +68,17 @@ public class Inventory {
         if ((items[i].getSellIn() < 0) && (items[i].getQuality() > 0)) {
             decreaseQualityByOne(i);
         }
+        
+    }
+    
+    public void updateQualityConjuredItems(int i){
+        decreaseQualityByOne(i);
+        decreaseQualityByOne(i); 
+        decreaseSellInByOne(i);
+        if ((items[i].getSellIn() < 0) && (items[i].getQuality() > 0)) {
+            decreaseQualityByOne(i);
+            decreaseQualityByOne(i); 
+        }
+        
     }
 }

InventoryTest.java

@@ -8,14 +8,17 @@ public class InventoryTest {
     private static final String AGED_BRIE_NAME = "Aged Brie";
     private static final String BACKSTAGE_PASS_NAME = "Backstage passes to a TAFKAL80ETC concert";
     private static final String NORMAL_ITEM_NAME = "+5 Dexterity Vest";
+    private static final String CONJURED_ITEM_NAME = "Conjured Item: Thori'dal, the Stars' Fury";
 
     private Item sulfuras;
     private Item normalItem;
+    private Item conjuredItem;
 
     @Before
     public void setup(){
         sulfuras = new Item("Sulfuras, Hand of Ragnaros", 0, 80);
         normalItem = new Item(NORMAL_ITEM_NAME, 10, 20);
+        conjuredItem = new Item(CONJURED_ITEM_NAME, 10, 20);
     }
 
     @Test
@@ -49,7 +52,7 @@ public class InventoryTest {
 
         assertEquals(expectedSellIn, normalItem.getSellIn());
     }
-
+    
     @Test
     public void testUpdate_ForNormalItemQuantity() throws Exception {
         int expectedQuality = normalItem.getQuality() - 1;
@@ -60,6 +63,17 @@ public class InventoryTest {
 
         assertEquals(expectedQuality, normalItem.getQuality());
     }
+    
+    @Test
+    public void testUpdate_ForConjuredItemQuantity() throws Exception {
+        int expectedQuality = conjuredItem.getQuality() - 2;
+        Item[] items = {conjuredItem};
+        Inventory sut = new Inventory(items);
+
+        sut.updateQuality();
+
+        assertEquals(expectedQuality, conjuredItem.getQuality());
+    }
 
     @Test
     public void testUpdate_ForSoldOutItem() throws Exception {
@@ -84,6 +98,18 @@ public class InventoryTest {
 
         assertEquals(expectedQuality, normalItemWithPassedSellDate.getQuality());
     }
+    
+    @Test
+    public void testUpdate_ForConjuredItemOnceTheSellInDatePassed() throws Exception {
+        Item conjuredItemWithPassedSellDate = new Item(CONJURED_ITEM_NAME, -1, 25);
+        int expectedQuality = conjuredItemWithPassedSellDate.getQuality() - 4;
+        Item[] items = {conjuredItemWithPassedSellDate};
+        Inventory sut = new Inventory(items);
+
+        sut.updateQuality();
+
+        assertEquals(expectedQuality, conjuredItemWithPassedSellDate.getQuality());
+    }
 
     @Test
     public void testUpdate_AgedBrie() throws Exception {