diff --git a/Java/src/test/java/com/gildedrose/GildedRoseTest.java b/Java/src/test/java/com/gildedrose/GildedRoseTest.java
index 8ae29eec..dcfba7f1 100644
--- a/Java/src/test/java/com/gildedrose/GildedRoseTest.java
+++ b/Java/src/test/java/com/gildedrose/GildedRoseTest.java
@@ -7,11 +7,91 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 class GildedRoseTest {
 
     @Test
-    void foo() {
-        Item[] items = new Item[] { new Item("foo", 0, 0) };
+    void aged_brie_increase_in_quality_by_1_when_quantity_less_than_50() {
+        Item[] items = new Item[] { new Item("Aged Brie", 12, 48) };
         GildedRose app = new GildedRose(items);
         app.updateQuality();
-        assertEquals("fixme", app.items[0].name);
+        assertEquals(49, app.items[0].quality);
     }
-
+    
+    @Test
+    void aged_brie_increase_in_quality_by_twice_when__expired() {
+        Item[] items = new Item[] { new Item("Aged Brie", -1, 40) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(42, app.items[0].quality);
+    }
+    
+    @Test
+    void backstage_passes_increase_in_quality_by_1_when_quality_lessthan_50() {
+        Item[] items = new Item[] { new Item("Backstage passes to a TAFKAL80ETC concert", 15, 28) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(29, app.items[0].quality);
+    }
+    
+    
+    @Test
+    void backstage_passes_increase_in_quality_by_2_when_there_are_10_daysOrLess() {
+        Item[] items = new Item[] { new Item("Backstage passes to a TAFKAL80ETC concert", 6, 20) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(22, app.items[0].quality);
+    }
+    
+    @Test
+    void backstage_passes_increase_in_quality_by_3_when_there_are_5_daysOrLess() {
+        Item[] items = new Item[] { new Item("Backstage passes to a TAFKAL80ETC concert", 4, 20) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(23, app.items[0].quality);
+    }
+    
+    @Test
+    void backstage_passes_quality_decreases_to_0_when_expired() {
+        Item[] items = new Item[] { new Item("Backstage passes to a TAFKAL80ETC concert", -1, 20) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(0, app.items[0].quality);
+    }
+    
+    @Test
+    void normal_items_decrease_in_quality_by_1_when_quality_morethan_0() {
+        Item[] items = new Item[] { new Item("Normal Item", 5, 20) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(19, app.items[0].quality);
+    }
+    
+    @Test
+    void normal_items_decrease_in_quality_by_twice_when_expired() {
+        Item[] items = new Item[] { new Item("Normal Item", -1, 20) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(18, app.items[0].quality);
+    }
+    @Test
+    void conjured_items_decrease_in_quality_by_twice_compared_to_normal_items() {
+        Item[] items = new Item[] { new Item("Conjured", 12, 20) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(18, app.items[0].quality);
+    }
+    
+    @Test
+    void conjured_items_decrease_in_quality_by_twice_compared_to_normal_items_when_expired() {
+        Item[] items = new Item[] { new Item("Conjured", -1, 20) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(16, app.items[0].quality);
+    }
+    
+    @Test
+    void sell_in_decreses_by_1() {
+        Item[] items = new Item[] { new Item("Conjured", 12, 20) };
+        GildedRose app = new GildedRose(items);
+        app.updateQuality();
+        assertEquals(11, app.items[0].sellIn);
+    }
+   
 }