Added a whole test to the ONE GIANT METHOD of Inventory Class

src/main/java/com/zipcodewilmington/gildedrose/Inventory.java

@@ -9,7 +9,22 @@ public class Inventory {
         this.items = items;
     }
 
+//    public void increaseQuality(int i){
+//
+//        int quality = item.getQuality() + i;
+//        if (quality > 50) {
+//            quality = 50;
+//        }
+//
+//        item.setQuality(quality);
+//    }
+
+    public Item[] getItems(){
+        return this.items;
+    }
+
 
+    // Old Code
     public void updateQuality() {
         // Giant for loop representing the "day" each day, the quality's of items change.
 

src/test/java/com/zipcodewilmington/gildedrose/InventoryTest.java

@@ -3,6 +3,8 @@ package com.zipcodewilmington.gildedrose;
 import org.junit.Assert;
 import org.junit.Test;
 
+import java.util.Arrays;
+
 /**
  * Creating tests for the Inventory Class
  * The Inventory class will keep track of SellIn & Quality
@@ -10,9 +12,66 @@ import org.junit.Test;
  */
 
 public class InventoryTest {
+    Inventory inventory;
+
+    public InventoryTest() {
+
+        Item wine = new Item("wine", 2, 25);
+        Item agedBrie = new Item("Aged Brie", 1, 45);
+        Item passes = new Item("Backstage passes to a TAFKAL80ETC concert", 11, 25);
+        Item sulfuras = new Item("Sulfuras, Hand of Ragnaros", 10, 80 );
+
+        Item[] items = {wine, agedBrie, passes, sulfuras};
+
+        inventory = new Inventory(items);
+    }
+
+    public void assertTestValues(Inventory inventory, int days, int wineSellIn, int wineQuality, int brieSellIn, int brieQuality,
+                                 int passSellIn, int passQuality, int sulfurasSellIn, int sulfurasQuality) {
+        for (int i = 0; i < days; i++) {
+            inventory.updateQuality();
+        }
+        Item[] items = inventory.getItems();
+        Item currentItem = items[0];
+        Assert.assertSame("wine", currentItem.getName());
+        Assert.assertEquals(wineSellIn, currentItem.getSellIn());
+        Assert.assertEquals(wineQuality, currentItem.getQuality());
+
+        currentItem = items[1];
+        Assert.assertSame("Aged Brie", currentItem.getName());
+        Assert.assertEquals(brieSellIn, currentItem.getSellIn());
+        Assert.assertEquals(brieQuality, currentItem.getQuality());
+
+        currentItem = items[2];
+        Assert.assertSame("Backstage passes to a TAFKAL80ETC concert", currentItem.getName());
+        Assert.assertEquals(passSellIn, currentItem.getSellIn());
+        Assert.assertEquals(passQuality, currentItem.getQuality());
+
+        currentItem = items[3];
+        Assert.assertSame("Sulfuras, Hand of Ragnaros", currentItem.getName());
+        Assert.assertEquals(sulfurasSellIn, currentItem.getSellIn());
+        Assert.assertEquals(sulfurasQuality, currentItem.getQuality());
+    }
+
     @Test
-    public void updateQuantityTest(){
-        Assert.assertEquals(1, 1);
+    public void updateQualityTest(){
+        // Given
+
+        // One day
+        assertTestValues(inventory, 1, 1, 24, 0, 46, 10, 26, 10, 80);
+
+        // One more day
+        assertTestValues(inventory, 1, 0, 23, -1, 48, 9, 28, 10, 80);
+
+        // Four more days
+        assertTestValues(inventory, 4, -4, 15, -5, 50, 5, 36, 10, 80);
+
+        // Three more days
+        assertTestValues(inventory, 3, -7, 9, -8, 50, 2, 45, 10, 80);
+
+        // Five more days
+        assertTestValues(inventory, 5, -12, 0, -13, 50, -3, 0, 10, 80);
     }
+
 }
 

src/test/java/com/zipcodewilmington/gildedrose/ItemTest.java

@@ -0,0 +1,9 @@
+package com.zipcodewilmington.gildedrose;
+
+import org.junit.Test;
+
+// test item class
+
+public class ItemTest {
+
+}