Done product manager

src/main/java/com/github/curriculeon/GenericInventory.java

@@ -1,31 +1,42 @@
 package com.github.curriculeon;
 
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
 /**
  * Created by leon on 12/16/2019.
  */
-public class GenericInventory<SomeType> implements InventoryInterface<SomeType> {
+public class GenericInventory<SomeType> implements InventoryInterface<SomeType>, Iterable<SomeType> {
+    List<SomeType> productManager = new ArrayList<>();
+
     @Override
     public void add(SomeType someObject) {
-
+        this.productManager.add(someObject);
     }
 
     @Override
     public Boolean contains(SomeType someObject) {
-        return null;
+        return this.productManager.contains(someObject);
     }
 
     @Override
     public SomeType get(int indexOfElement) {
-        return null;
+        return this.productManager.get(indexOfElement);
     }
 
     @Override
     public SomeType remove(int indexOfElement) {
-        return null;
+        return this.productManager.remove(indexOfElement);
     }
 
     @Override
     public SomeType[] toArray(SomeType[] objectsToBeAdded) {
-        return null;
+        return this.productManager.toArray(objectsToBeAdded);
+    }
+
+    @Override
+    public Iterator<SomeType> iterator() {
+        return this.productManager.iterator();
     }
 }

src/main/java/com/github/curriculeon/ItemInventory.java

@@ -1,31 +1,40 @@
 package com.github.curriculeon;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
 
 /**
  * Created by leon on 12/16/2019.
  */
-public class ItemInventory implements InventoryInterface<Item> {
+public class ItemInventory implements InventoryInterface<Item>, Iterable<Item> {
+    List<Item> productManager = new ArrayList<>();
     @Override
     public void add(Item someObject) {
-
+        this.productManager.add(someObject);
     }
 
     @Override
     public Boolean contains(Item someObject) {
-        return null;
+        return this.productManager.contains(someObject);
     }
 
     @Override
     public Item get(int indexOfElement) {
-        return null;
+        return this.productManager.get(indexOfElement);
     }
 
     @Override
     public Item remove(int indexOfElement) {
-        return null;
+        return this.productManager.remove(indexOfElement);
     }
 
     @Override
     public Item[] toArray(Item[] objectsToBeAdded) {
-        return new Item[0];
+        return this.productManager.toArray(objectsToBeAdded);
+    }
+
+    @Override
+    public Iterator<Item> iterator() {
+        return this.productManager.iterator();
     }
 }

src/test/java/com/github/curriculeon/genericinventory/RemoveTest.java

@@ -10,7 +10,7 @@
 public class RemoveTest {
     // given
     private <SomeType> void test(SomeType[] expectedItems, SomeType[] objectsToBeAdded, int indexOfElement) {
-        SomeType[] actualItems = objectsToBeAdded.clone();
+        SomeType[] actualItems = expectedItems.clone();
         GenericInventory<SomeType> genericInventory = new GenericInventory<>();
         for (SomeType someObject : objectsToBeAdded) {
             genericInventory.add(someObject);

src/test/java/com/github/curriculeon/iteminventory/RemoveTest.java

@@ -11,7 +11,7 @@
 public class RemoveTest {
     // given
     private void test(Item[] expectedItems, Item[] objectsToBeAdded, int indexOfElement) {
-        Item[] actualItems = objectsToBeAdded.clone();
+        Item[] actualItems = expectedItems.clone();
         GenericInventory<Item> genericInventory = new GenericInventory<>();
         for (Item someObject : objectsToBeAdded) {
             genericInventory.add(someObject);