{stuck on tests, but still going}

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

 package com.zipcodewilmington.gildedrose;
 
 import org.junit.Assert;
+import org.junit.Before;
 import org.junit.Test;
 
+import java.util.ArrayList;
+
 public class InventoryTest {
+    Item sulfaras = new Item("Sulfuras, Hand of Ragnaros", 5, 10);
+    Item agedBrie = new Item("Aged Brie", 10, 20);
+    Item backstagePass = new Item("Backstage passes to a TAFKAL80ETC concert", 10, 30);
+    Item apple = new Item("Apple", 10, 20);
+    Item strawberry = new Item ("Strawberry", 0 , 55);
+    Inventory inventory;
+
+    @Before
+    public void setup() {
+        Item[] itemsArray = {sulfaras, agedBrie, backstagePass, apple};
+        inventory = new Inventory(itemsArray);
+
+    }
+
+    @Test
+    public void testSetAndUpdateQualityForNormalItem() {
+        int expected = apple.getQuality() - 1;
+
+        //when
+        inventory.updateQuality();
+
+        //then
+        Assert.assertEquals(expected, apple.getQuality());
+    }
+
     @Test
-    public void updateQuantityTest(){
-        Assert.assertEquals(1, 1);
+    public void testForSulfaras() {
+
+        int expected = sulfaras.getQuality();
+
+        //when
+        inventory.updateQuality();
+
+        //then
+        Assert.assertEquals(expected, sulfaras.getQuality());
+    }
+
+    @Test
+    public void testBackstagePassSell() {
+        Item backstagePass = new Item("Backstage passes to a TAFKAL80ETC concert", 5, 2);
+        int expected = 2 ;
+
+        //when
+        inventory.updateQuality();
+
+        //then
+        Assert.assertEquals(expected, backstagePass.getQuality());
+    }
+
+    @Test
+    public void testBackstagePassQuality() {
+        //given
+        Item backstagePass = new Item("Backstage passes to a TAFKAL80ETC concert", 12, 55);
+        
+        int expected = backstagePass.getQuality();
+
+            //when
+        inventory.updateQuality();
+
+            //then
+        Assert.assertEquals(expected, backstagePass.getQuality());
+
+        }
+       @Test
+    public void testSellInForNormalItem() {
+        Item apple = new Item("Apple", -2, 20);
+        int expected = apple.getQuality();
+
+        //when
+        inventory.updateQuality();
+
+        //then
+        Assert.assertEquals(expected, apple.getQuality());
+    }
     }
-}