completed lab

Inventory.java

@@ -0,0 +1,63 @@
+
+import java.util.Hashtable;
+import java.util.Set;
+
+/**
+ * Write a description of class Inventory here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class Inventory
+{
+    Hashtable<String, Product> productInventory;
+    
+    public Inventory() {
+        productInventory = new Hashtable<String, Product>();
+    }
+    
+    public void addItem(Product prod) {
+        productInventory.put(prod.getID(), prod);
+    }
+    
+    public void addItem(float price, int quantity, String id) {
+        Product newItem = new Product(price, quantity, id);
+        productInventory.put(id, newItem);
+    }
+    
+    public Product getItem(String id) {
+        return productInventory.get(id);
+    }
+    public int getOnHandQuantity(String id) {
+        return productInventory.get(id).getOnHandQuantity() ;
+    }
+    public float getPrice(String id) {
+        return productInventory.get(id).getPrice();
+    }
+    
+    public void updatePrice(String id, float price) {
+        productInventory.get(id).setPrice(price);
+    }
+    
+    public void addUnits(String id, int quantity) {
+        productInventory.get(id).addUnits(quantity);
+    }
+    
+    public void removeUnits(String id, int quantity) {
+        productInventory.get(id).removeUnits(quantity);
+    }
+    
+    public double getInventoryValue() {
+        double inventoryValue = 0;
+        Set<String> productIDs = productInventory.keySet();
+        
+        for (String id : productIDs) {
+            Product p = productInventory.get(id);
+            int quantity = p.getOnHandQuantity();
+            float price = p.getPrice();
+            inventoryValue += quantity * price;
+        }
+        
+        return inventoryValue;
+    }
+}

InventoryTest.java

@@ -0,0 +1,87 @@
+
+
+import org.junit.Assert;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * The test class InventoryTest.
+ *
+ * @author  (your name)
+ * @version (a version number or a date)
+ */
+public class InventoryTest
+{
+    @Test
+    public void addItemTest1() {
+        String expected = "dragon";
+        
+        Inventory danysStuff = new Inventory();
+        danysStuff.addItem(new Product(25.00f, 3, "dragon"));
+        
+        Product dragon = danysStuff.getItem("dragon");
+        String actual = dragon.getID();
+        
+        Assert.assertEquals(actual, expected);
+    }
+    @Test
+    public void addItemTest2() {
+        String expected = "dragon";
+        
+        Inventory danysStuff = new Inventory();
+        danysStuff.addItem(25.00f, 3, "dragon");
+        
+        Product dragon = danysStuff.getItem("dragon");
+        String actual = dragon.getID();
+        
+        Assert.assertEquals(actual, expected);
+    }
+    @Test
+    public void addUnitsTest() {
+        int expected = 6;
+        
+        Inventory danysStuff = new Inventory();
+        danysStuff.addItem(new Product(25.00f, 3, "dragon"));
+        danysStuff.addUnits("dragon", 3);
+        
+        int actual = danysStuff.getOnHandQuantity("dragon");
+        
+        Assert.assertEquals(actual, expected);
+    }
+    @Test
+    public void removeUnitsTest() {
+        int expected = 2;
+        
+        Inventory danysStuff = new Inventory();
+        danysStuff.addItem(25.00f, 3, "dragon");
+        danysStuff.removeUnits("dragon", 1);
+        
+        int actual = danysStuff.getOnHandQuantity("dragon");
+        
+        Assert.assertEquals(actual, expected);
+    }
+    @Test
+    public void updatePriceTest() {
+        float expected = 516.99f;
+        
+        Inventory danysStuff = new Inventory();
+        danysStuff.addItem(25.00f, 3, "dragon");
+        danysStuff.updatePrice("dragon", 516.99f);
+        float actual = danysStuff.getPrice("dragon");
+        
+        Assert.assertEquals(actual, expected, 0.001f);
+    }
+    @Test
+    public void inventoryValueTest() {
+        double expected = 57.44;
+        
+        Inventory starkStuff = new Inventory();
+        starkStuff.addItem(3.00f, 9, "direwolf collar");
+        starkStuff.addItem(2.50f, 5, "direworlf treat");
+        starkStuff.addItem(2.99f, 6, "winterfell snowglobe");
+        double actual = starkStuff.getInventoryValue();
+        
+        Assert.assertEquals(actual, expected, 0.001f);
+    }
+}

MainApplication.java

@@ -3,4 +3,49 @@
  * Created by leon on 1/10/18.
  */
 public class MainApplication {
+
+    public static void main(String[] args) {
+       System.out.println("This is a quick inventory demo!");
+       
+       Inventory starkStuff = new Inventory();
+       System.out.println("We can create a new inventory for Rickon Stark's new store, Stark Stuff!");
+       
+       starkStuff.addItem(3.00f, 9, "direwolf collar");
+       System.out.println("We added an invetory item called " + starkStuff.getItem("direwolf collar").getID());
+       System.out.println("The price is: " + starkStuff.getPrice("direwolf collar"));
+       System.out.println("The quanitity is: " + starkStuff.getOnHandQuantity("direwolf collar"));
+       
+       starkStuff.addItem(2.50f, 5, "direwolf treat");
+       starkStuff.addItem(2.99f, 6, "winterfell snowglobe");
+       
+       System.out.println(String.format("There are also %d direwolf treats that cost $%.2f.", 
+                          starkStuff.getOnHandQuantity("direwolf treat"), starkStuff.getPrice("direwolf treat"))); 
+           
+       System.out.println(String.format("There are also %d winterfell snowglobes that cost $%.2f.", 
+                          starkStuff.getOnHandQuantity("winterfell snowglobe"), starkStuff.getPrice("winterfell snowglobe")));
+       
+       starkStuff.updatePrice("winterfell snowglobe", 199.99f);
+       System.out.println("But wait!");
+       System.out.println("After Jon Snow returned to Winterfell, the demand for winterfell snowglobes shot way up!");
+       System.out.println("Rickon decides to up the price. (sadly, he must do this from beyond the grave)");
+       System.out.println(String.format("The new price of winterfell snowglobes is: $%.2f", starkStuff.getPrice("winterfell snowglobe"))); 
+       
+       starkStuff.removeUnits("direwolf treat", 3);
+       System.out.println("With Jon Snow's direwolf Ghost around, the direwolf treats are selling fast.");
+       System.out.println(String.format("The new on hand quantity for direwolf treats is: %d", starkStuff.getOnHandQuantity("direwolf treat")));
+       
+       starkStuff.addUnits("winterfell snowglobe", 15);
+       
+       System.out.println("Luckily there is a new shipment of winterfell snowglobe.");
+       System.out.println(String.format("The new on hand quantity for winterfell snowglobes is: %d", starkStuff.getOnHandQuantity("winterfell snowglobe")));
+       
+       double inVal = starkStuff.getInventoryValue();
+       
+       System.out.println(String.format("Now, the total value of the late Rickon Stark's inventory is: $%.2f", inVal));
+       
+    }
 }
+
+
+
+

Product.java

@@ -4,4 +4,31 @@
  * Created by leon on 1/10/18.
  */
 public class Product {
+    private float price;
+    private int quantity;
+    final private String id;
+    
+    public Product(float price, int quantity, String id) {
+        this.price = price;
+        this.quantity = quantity;
+        this.id = id;
+    }
+    public void setPrice(float newPrice) {
+        this.price = newPrice;
+    }
+    public float getPrice() {
+        return price;
+    }
+    public void addUnits(int numUnits) {
+        quantity += numUnits;
+    }
+    public void removeUnits(int numUnits) {
+        quantity -= numUnits;
+    }
+    public int getOnHandQuantity() {
+        return quantity; 
+    }
+    public String getID() {
+        return id;
+    }
 }

ProductTest.java

@@ -1,5 +1,40 @@
+
+import org.junit.Assert;
+import org.junit.Test;
+
 /**
  * Created by leon on 1/10/18.
  */
 public class ProductTest {
+    @Test
+    public void setPriceTest() {
+        float expected = 15.25f;
+        
+        Product dragons = new Product(25.00f, 3, "dragon");
+        dragons.setPrice(15.25f);
+        float actual = dragons.getPrice();
+        
+        Assert.assertEquals(actual, expected, 0.001f);
+    }
+    @Test
+    public void addUnitsTest() {
+        int expected = 10;
+        
+        Product dragons = new Product(25.00f, 3, "dragon");
+        dragons.addUnits(7);
+        int actual = dragons.getOnHandQuantity();
+        
+        Assert.assertEquals(actual, expected); 
+    }
+    @Test
+    public void removeUnitsTest() {
+        int expected = 2;
+        
+        Product dragons = new Product(25.00f, 3, "dragon");
+        dragons.removeUnits(1);
+        int actual = dragons.getOnHandQuantity();
+        
+        Assert.assertEquals(actual, expected);
+    }
+    
 }

package.bluej

@@ -1,20 +1,35 @@
 #BlueJ package file
-editor.fx.0.height=722
-editor.fx.0.width=800
-editor.fx.0.x=560
-editor.fx.0.y=117
+dependency1.from=ProductTest
+dependency1.to=Product
+dependency1.type=UsesDependency
+dependency2.from=Inventory
+dependency2.to=Product
+dependency2.type=UsesDependency
+dependency3.from=InventoryTest
+dependency3.to=Inventory
+dependency3.type=UsesDependency
+dependency4.from=InventoryTest
+dependency4.to=Product
+dependency4.type=UsesDependency
+dependency5.from=MainApplication
+dependency5.to=Inventory
+dependency5.type=UsesDependency
+editor.fx.0.height=716
+editor.fx.0.width=1144
+editor.fx.0.x=50
+editor.fx.0.y=23
 objectbench.height=101
 objectbench.width=461
 package.divider.horizontal=0.6
 package.divider.vertical=0.8007380073800738
 package.editor.height=427
 package.editor.width=674
-package.editor.x=141
-package.editor.y=59
+package.editor.x=37
+package.editor.y=62
 package.frame.height=600
 package.frame.width=800
-package.numDependencies=0
-package.numTargets=0
+package.numDependencies=5
+package.numTargets=5
 package.showExtends=true
 package.showUses=true
 project.charset=UTF-8
@@ -23,3 +38,39 @@ readme.name=@README
 readme.width=47
 readme.x=10
 readme.y=10
+target1.height=50
+target1.name=ProductTest
+target1.showInterface=false
+target1.type=UnitTestTargetJunit4
+target1.width=100
+target1.x=120
+target1.y=20
+target2.height=50
+target2.name=Product
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=80
+target2.x=40
+target2.y=100
+target3.height=50
+target3.name=InventoryTest
+target3.showInterface=false
+target3.type=UnitTestTargetJunit4
+target3.width=80
+target3.x=150
+target3.y=180
+target4.association=InventoryTest
+target4.height=50
+target4.name=Inventory
+target4.showInterface=false
+target4.type=ClassTarget
+target4.width=80
+target4.x=120
+target4.y=210
+target5.height=50
+target5.name=MainApplication
+target5.showInterface=false
+target5.type=ClassTarget
+target5.width=120
+target5.x=270
+target5.y=100