Adapted logic to handle new product- Conjured

Java/src/main/java/com/gildedrose/Conjured.java

@@ -0,0 +1,25 @@
+package com.gildedrose;
+
+import static com.gildedrose.rule.ValidationRule.*;
+
+public class Conjured implements Goods {
+
+	@Override
+	public void updateQuality(Item item) {
+		reduceQualityTwice(item);
+	}
+
+	@Override
+	public void updateQualityForExpiredItem(Item item) {
+		if (isExpired(item)) {
+			reduceQualityTwice(item);
+		}
+	}
+
+	private void reduceQualityTwice(Item item) {
+		if (hasMinimumRequiredQuality(item)) {
+			item.quality = Math.max(0, item.quality - 2);
+		}
+	}
+
+}

Java/src/main/java/com/gildedrose/GoodsType.java

@@ -4,7 +4,9 @@ public enum GoodsType {
 
 	AGED_BRIE("Aged Brie"), 
 	BACK_STAGE_PASSES("Backstage passes to a TAFKAL80ETC concert"),
-	SULFURAS("Sulfuras, Hand of Ragnaros");
+	SULFURAS("Sulfuras, Hand of Ragnaros"),
+	CONJURED("Conjured Mana Cake"),
+	;
 
 	private final String goodsName;
 

Java/src/main/java/com/gildedrose/factory/GoodsFactory.java

@@ -7,6 +7,7 @@ import java.util.function.Supplier;
 
 import com.gildedrose.AgedBrie;
 import com.gildedrose.BackStagePasses;
+import com.gildedrose.Conjured;
 import com.gildedrose.Goods;
 import com.gildedrose.GoodsType;
 import com.gildedrose.Generic;
@@ -20,6 +21,7 @@ public class GoodsFactory {
 		goods.put(GoodsType.AGED_BRIE.getGoodsName(), AgedBrie::new);
 		goods.put(GoodsType.BACK_STAGE_PASSES.getGoodsName(), BackStagePasses::new);
 		goods.put(GoodsType.SULFURAS.getGoodsName(), Sulfuras::new);
+		goods.put(GoodsType.CONJURED.getGoodsName(), Conjured::new);
 
 		GOODS_SUPPLIER = Collections.unmodifiableMap(goods);
 	}

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

@@ -0,0 +1,42 @@
+package com.gildedrose;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.util.stream.Stream;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+class ConjuredTest {
+
+	private static Stream<Arguments> getTestItems() {
+		return Stream.of(Arguments.of(new Item(GoodsType.CONJURED.getGoodsName(), 2, 1), 0),
+				Arguments.of(new Item(GoodsType.CONJURED.getGoodsName(), 10, 5), 3)
+				);
+	}
+
+	private static Stream<Arguments> getExpiredTestItems() {
+		return Stream.of(Arguments.of(new Item(GoodsType.CONJURED.getGoodsName(), -1, 1), 0),
+				Arguments.of(new Item(GoodsType.CONJURED.getGoodsName(), -1, 5), 3)
+				);
+	}
+
+	@ParameterizedTest(name = "Test updateQuality - {index}")
+	@MethodSource("getTestItems")
+	void testUpdateQuality(Item item, int expectedQuality) {
+		Conjured conjured = new Conjured();
+		conjured.updateQuality(item);
+		assertEquals(expectedQuality, item.quality);
+
+	}
+
+	@ParameterizedTest(name = "Test updateQualityForExpiredItems - {index}")
+	@MethodSource("getExpiredTestItems")
+	void testUpdateQualityForExpiredItem(Item item, int expectedQuality) {
+		Conjured conjured = new Conjured();
+		conjured.updateQualityForExpiredItem(item);
+		assertEquals(expectedQuality, item.quality);
+	}
+
+}

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

@@ -13,7 +13,8 @@ class GildedRoseTest {
 	private static Stream<Arguments> getTestItemsForSellInDayCheck() {
 		return Stream.of(
 				Arguments.of(new Item[] { new Item(GoodsType.AGED_BRIE.getGoodsName(), 1, 1) }, 0),
-				Arguments.of(new Item[] { new Item(GoodsType.SULFURAS.getGoodsName(), 1, 1) }, 1)
+				Arguments.of(new Item[] { new Item(GoodsType.SULFURAS.getGoodsName(), 1, 1) }, 1),
+				Arguments.of(new Item[] { new Item(GoodsType.CONJURED.getGoodsName(), 1, 1) }, 0)
 
 		);
 	}
@@ -48,7 +49,12 @@ class GildedRoseTest {
 				Arguments.of(new Item[] { new Item("Coffee Day", -1, 2) }, 0),
 				
 				Arguments.of(new Item[] { new Item(GoodsType.SULFURAS.getGoodsName(), -1, 10) }, 10),
-				Arguments.of(new Item[] { new Item(GoodsType.SULFURAS.getGoodsName(), 1, 10) }, 10)
+				Arguments.of(new Item[] { new Item(GoodsType.SULFURAS.getGoodsName(), 1, 10) }, 10),
+				
+				Arguments.of(new Item[] { new Item(GoodsType.CONJURED.getGoodsName(), -1, 10) }, 6),
+				Arguments.of(new Item[] { new Item(GoodsType.CONJURED.getGoodsName(), 1, 10) }, 8),
+				Arguments.of(new Item[] { new Item(GoodsType.CONJURED.getGoodsName(), -1, 2) }, 0),
+				Arguments.of(new Item[] { new Item(GoodsType.CONJURED.getGoodsName(), 1, 2) }, 0)
 
 		);
 	}