Completed parts one and two.

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

@@ -9,56 +9,39 @@ public class Inventory {
         this.items = items;
     }
 
+    public void updateQuality(){
+        agedBrie();
+        sulfuras();
+        backstagePasses();
+    }
 
-    public void updateQuality() {
-        for (int i = 0; i < items.length; i++) {
-            if (!items[i].getName().equals("Aged Brie")
-                    && !items[i].getName().equals("Backstage passes to a TAFKAL80ETC concert")) {
-                if (items[i].getQuality() > 0) {
-                    if (!items[i].getName().equals("Sulfuras, Hand of Ragnaros")) {
-                        items[i].setQuality(items[i].getQuality() - 1);
-                    }
-                }
-            } else {
-                if (items[i].getQuality() < 50) {
+    public void agedBrie(){
+        for(int i = 0; i < items.length; i++){
+            if(items[i].getName().equals("Aged Brie") && items[i].getQuality() < 50) {
                     items[i].setQuality(items[i].getQuality() + 1);
-
-                    if (items[i].getName() == "Backstage passes to a TAFKAL80ETC concert") {
-                        if (items[i].getSellIn() < 11) {
-                            if (items[i].getQuality() < 50) {
-                                items[i].setQuality(items[i].getQuality() + 1);
-                            }
-                        }
-
-                        if (items[i].getSellIn() < 6) {
-                            if (items[i].getQuality() < 50) {
-                                items[i].setQuality(items[i].getQuality() + 1);
-                            }
-                        }
-                    }
-                }
             }
+        }
+    }
 
-            if (!items[i].getName().equals("Sulfuras, Hand of Ragnaros")) {
-                items[i].setSellIn(items[i].getSellIn() - 1);
+    public void sulfuras(){
+        for(int i = 0; i < items.length; i++){
+            if(items[i].getName().equals("Sulfuras, Hand of Ragnaros") && items[i].getQuality() < 80){
+                continue;
             }
+        }
+    }
 
-            if (items[i].getSellIn() < 0) {
-                if (!items[i].getName().equals("Aged Brie")) {
-                    if (!items[i].getName().equals("Backstage passes to a TAFKAL80ETC concert")) {
-                        if (items[i].getQuality() > 0) {
-                            if (!items[i].getName().equals("Sulfuras, Hand of Ragnaros")) {
-                                items[i].setQuality(items[i].getQuality() - 1);
-                            }
-                        }
-                    } else {
-                        items[i].setQuality(items[i].getQuality()
-                                - items[i].getQuality());
-                    }
-                } else {
-                    if (items[i].getQuality() < 50) {
-                        items[i].setQuality(items[i].getQuality() + 1);
-                    }
+    public void backstagePasses(){
+        for(int i = 0; i < items.length; i++) {
+            if(items[i].getName().equals("Backstage passes to a TAFKAL80ETC concert")) {
+                if(items[i].getSellIn() < 0){
+                    items[i].setQuality(0);
+                }else if(items[i].getSellIn() <= 5 && items[i].getQuality() < 48){
+                    items[i].setQuality(items[i].getQuality() + 3);
+                }else if(items[i].getSellIn() <= 10 && items[i].getQuality() < 49){
+                    items[i].setQuality(items[i].getQuality() + 2);
+                }else if(items[i].getSellIn() > 10 && items[i].getQuality() < 50){
+                    items[i].setQuality(items[i].getQuality() + 1);
                 }
             }
         }

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

@@ -3,10 +3,108 @@ package com.zipcodewilmington.gildedrose;
 import org.junit.Assert;
 import org.junit.Test;
 
+import java.util.ArrayList;
+
 public class InventoryTest {
+
+    @Test
+    public void testAgedBrie1() {
+        Item agedBrie = new Item("Aged Brie", 10, 10);
+        Item[] item = {agedBrie};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 11;
+        int actual = agedBrie.getQuality();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testAgedBrie2() {
+        Item agedBrie = new Item("Aged Brie", 10, 49);
+        Item[] item = {agedBrie};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 50;
+        int actual = agedBrie.getQuality();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testAgedBrie3() {
+        Item agedBrie = new Item("Aged Brie", 10, 50);
+        Item[] item = {agedBrie};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 50;
+        int actual = agedBrie.getQuality();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testBackstagePass1() {
+        Item backstage = new Item("Backstage passes to a TAFKAL80ETC concert", 11, 40);
+        Item[] item = {backstage};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 41;
+        int actual = backstage.getQuality();
+        Assert.assertEquals(expected, actual);
+    }
+
     @Test
-    public void updateQuantityTest(){
-        Assert.assertEquals(1, 1);
+    public void testBackstagePass2() {
+        Item backstage = new Item("Backstage passes to a TAFKAL80ETC concert", 7, 40);
+        Item[] item = {backstage};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 42;
+        int actual = backstage.getQuality();
+        Assert.assertEquals(expected, actual);
     }
+
+    @Test
+    public void testBackstagePass3() {
+        Item backstage = new Item("Backstage passes to a TAFKAL80ETC concert", 3, 40);
+        Item[] item = {backstage};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 43;
+        int actual = backstage.getQuality();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testBackstagePass4() {
+        Item backstage = new Item("Backstage passes to a TAFKAL80ETC concert", 0, 40);
+        Item[] item = {backstage};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 43;
+        int actual = backstage.getQuality();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testBackstagePass5() {
+        Item backstage = new Item("Backstage passes to a TAFKAL80ETC concert", -1, 40);
+        Item[] item = {backstage};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 0;
+        int actual = backstage.getQuality();
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testSulfurasPass1() {
+        Item sulfuras = new Item("Sulfuras, Hand of Ragnaros", 10, 40);
+        Item[] item = {sulfuras};
+        Inventory inventory = new Inventory(item);
+        inventory.updateQuality();
+        int expected = 40;
+        int actual = sulfuras.getQuality();
+        Assert.assertEquals(expected, actual);
+    }
+
 }