Added Walrus Tests by J3ENZR

assignment/app/src/test/java/org/example/WalrusTest.java

@@ -1,12 +1,77 @@
-/*
- * This source file was generated by the Gradle 'init' task
- */
 package org.example;
 
 import org.junit.Test;
 import static org.junit.Assert.*;
 
+import org.example.values.CannedWalrusFood;
+import org.example.values.Walrus;
+import org.example.values.WalrusFood;
+
 public class WalrusTest {
-    @Test public void appHasAGreeting() {
+
+    @Test
+    public void walrusCanEatMultipleFoods() {
+
+        Walrus walrus = new Walrus();
+
+        WalrusFood food1 = new WalrusFood();
+        WalrusFood food2 = new WalrusFood();
+        WalrusFood food3 = new WalrusFood();
+
+        walrus.addToStomach(food1);
+        walrus.addToStomach(food2);
+        walrus.addToStomach(food3);
+
+        assertTrue(walrus.hasEaten(food1));
+        assertTrue(walrus.hasEaten(food2));
+        assertTrue(walrus.hasEaten(food3));
+    }
+
+    @Test
+    public void walrusGetsRightFoodFromCan() {
+        Walrus walrus = new Walrus();
+        WalrusFood expectedFood = new WalrusFood();
+        CannedWalrusFood can = new CannedWalrusFood(expectedFood);
+
+        FeedsWalrus feeder = new FeedsWalrus();
+        feeder.feed(walrus, can);
+
+        assertTrue(walrus.hasEaten(expectedFood));
+    }
+
+    @Test
+    public void openingCanReturnsFood() {
+        WalrusFood food = new WalrusFood();
+        CannedWalrusFood can = new CannedWalrusFood(food);
+
+        OpensCan opener = new OpensCan();
+        WalrusFood opened = opener.open(can);
+
+        assertSame(food, opened);
+    }
+
+    @Test
+    public void walrusCanBeFed() {
+        Walrus walrus = new Walrus();
+        WalrusFood food = new WalrusFood();
+        CannedWalrusFood can = new CannedWalrusFood(food);
+
+        FeedsWalrus feeder = new FeedsWalrus();
+        feeder.feed(walrus, can);
+
+        assertTrue(walrus.hasEaten(food));  
     }
+
+    @Test
+    public void walrusAcceptsSubclassedFood() {
+        class FakeFish extends WalrusFood {}
+
+        Walrus walrus = new Walrus();
+        WalrusFood weirdFood = new FakeFish();
+
+        walrus.addToStomach(weirdFood);
+
+        assertTrue(walrus.hasEaten(weirdFood));
+    }
+
 }