Extract the legendary (Sulfuras) Gilded Rose item behaviour

Java/src/main/java/com/gildedrose/items/GildedRoseItemFactory.java

@@ -13,10 +13,11 @@ public class GildedRoseItemFactory {
     static final Pattern CONJURED_ITEM = Pattern.compile("Conjured.*", CASE_INSENSITIVE);
 
     public static GildedRoseItem create(Item item) {
-        if (LEGENDARY_NAME_PATTERN.matcher(item.name).matches()
-            || AGING_ITEM.matcher(item.name).matches()
+        if (AGING_ITEM.matcher(item.name).matches()
             || CONJURED_ITEM.matcher(item.name).matches()) {
             return new NonStandardGildedRoseItem(item);
+        }  else if (LEGENDARY_NAME_PATTERN.matcher(item.name).matches()) {
+            return new LegendaryGildedRoseItem(item);
         } else {
             return new StandardGildedRoseItem(item);
         }

Java/src/main/java/com/gildedrose/items/LegendaryGildedRoseItem.java

@@ -0,0 +1,16 @@
+package com.gildedrose.items;
+
+import com.gildedrose.Item;
+
+public class LegendaryGildedRoseItem extends AbstractGildedRoseItem {
+
+    public LegendaryGildedRoseItem(Item item) {
+        super(item);
+
+    }
+
+    @Override
+    public GildedRoseItem updateQuality() {
+        return this;
+    }
+}

Java/src/test/java/com/gildedrose/GildedRoseTest.java

@@ -42,14 +42,18 @@ class GildedRoseTest {
     @Test
     void updateQuality_standardItem_maxQuality50() {
         GildedRose app = createApp(createItem("standard", 10, 60));
-
         app.updateQuality();
+
         assertEquals(49, app.items[0].quality);
     }
 
     @Test
     void updateQuality_legendaryItem() {
-        fail("NYI");
+        GildedRose app = createApp(createItem("Sulfuras, Hand of Ragnaros ", 10, 80));
+        app.updateQuality();
+
+        assertEquals(10, app.items[0].sellIn);
+        assertEquals(80, app.items[0].quality);
     }
 
     @Test