Created Cart and Product tests

.gitignore

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+
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+
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README.md

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+# Store Lab
+* **Purpose** - to understand [classes](https://docs.oracle.com/javase/tutorial/java/concepts/class.html), [objects](https://docs.oracle.com/javase/tutorial/java/concepts/object.html) and [data encapsulation](https://en.wikipedia.org/wiki/Data_encapsulation).
+* **Objective** - to create a cart with products and payment
+
+## Part 1 - Product
+In the `test` folder, there is a `ProductTest` with most of the tested commented out.
+  1. Notice the word `Product` is red. That's because we need to create a new Class named `Product`. The file should be in `src/main/java/org.zipcoder.store`.
+    - To make the test pass, create a new empty constructor with no parameter
+  2. Uncomment the second test, line 14 - 26.
+    - Create a new constructor that takes a String for the product name
+  3. Continue to uncomment the test and make it pass
+  4. For the `get` and `set` test, you need to create a field and methods to get and set the field. Ex:
+
+    ```java
+    public class Book {
+      private String title;
+
+      public void setTitle(String title){
+        this.title = title;
+      }
+
+      public String getTitle() {
+        return this.title;
+      }
+    }
+    ```
+  5. Continue to uncomment the test and add code to make the test pass
+  6. For the product description, it should be in this format `title (Color: color, Size: size)`
+    - ex: `Hat (Color: Yellow, Size: LG)`
+
+## Part 2 - Cart
+A cart has an array of Product.
+  1. Open the `CartTest` and uncomment line 9-13. To make the test pass:
+    - Create a new class named `Cart`
+    - Create a new constructor that takes an array of Product
+    - Run the test, it should pass
+  2. Create a getter for Product to make `testGetProducts` test pass
+  3. To make `testGetSetDiscount` test pass:
+    - Create a new decimal field called `discount`
+    - Create a getter and setter for the field
+    - Run the test
+  4. To get `getProductTotal` tests to pass, you need add all the product prices together and return the result.
+  5. To get the total, you need to add the total of all the products minus the discount. For example, if a product costs $100, and the discount is 20% (0.20), then the total = 100 - (100 * 0.20) = 80
+
+## Part 3 - CreditCard
+The goal of this exercise is to know how to create and test a class.
+  1. Create a new class called `CreditCard`
+  2. Create a test case to get and set the `cardHolderName` of the type `String`
+      - Create getter and setter methods in the `CreditCard` class
+      - Add a field called cardHolderName
+  2. Do the same for the following fields:
+    - `String number`
+    - `int expiredMonth`
+    - `int expiredYear`
+  3. Create a getter and setter for each field
+  4. Create a test for `getDescription`
+    - `getDescription` should return `[cardHolderName] [last 4 digit of the number] [expiredMonth]/[expiredYear]`
+      - ex: `Tia Mowry 4551 10/2019`
+  5. Add a `CreditCard` field to the `Cart` class
+    - Add a getter and setter for the `creditCard` field
+
+## Part 4 - Product as an ArrayList - BONUS
+The goal of this exercise is to change the `products` array in the `Cart` class to an ArrayList.
+  1. In the `CartTest`, change the `products` array to an `ArrayList`
+    ```java
+      ArrayList<Product> products = new ArrayList();
+      products.add(new Product("Shirt", 15.01));
+    ```
+  2. Add this test to the `CartTest` class
+  ```java
+    @Test
+    public void testAddToCard(){
+        // Given
+        ArrayList<Product> products = new ArrayList();
+        Cart cart = new Cart(products);
+
+        // When
+        Product shirt = new Product("Shirt", 1.99);
+        cart.addProduct(shirt);
+
+        // Then
+        double expectedTotal = 1.99;
+        double actualTotal = cart.getProductTotal();
+        Assert.assertEquals(expectedTotal, actualTotal, DELTA);
+    }
+  ```
+    - Add a `addProduct` method to the `Cart` class
+    - Run the test. It should pass.

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>io.zipcoder</groupId>
+    <artifactId>ZipcodeStore</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+
+</project>

src/test/java/org/zipcoder/store/CartTest.java

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+package org.zipcoder.store;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class CartTest {
+    private static final double DELTA = 0.01;
+
+    @Test
+    public void testConstruction(){
+        Product[] products = new Product[]{};
+        Cart cart = new Cart(products);
+    }
+
+    @Test
+    public void testGetProducts(){
+        // Given
+        Product[] expectedProducts = new Product[0];
+
+        Cart cart = new Cart(expectedProducts);
+
+        // When
+        Product[] actualProducts = cart.getProducts();
+
+        // Then
+        Assert.assertEquals(expectedProducts, actualProducts);
+    }
+
+    @Test
+    public void testGetSetDiscount(){
+        // Given
+        Product[] products = new Product[]{};
+        Cart cart = new Cart(products);
+        double expectedDiscount = 0.02; // 20%
+
+        // When
+        cart.setDiscount(expectedDiscount);
+
+        // Then
+        double actualDiscount = cart.getDiscount();
+        Assert.assertEquals(expectedDiscount, actualDiscount, DELTA);
+    }
+
+    @Test
+    public void testProductTotal_WithNoProduct(){
+        // Given
+        Product[] products = new Product[0];
+
+        Cart cart = new Cart(products);
+
+        // When
+        double actualTotal = cart.getProductTotal();
+
+        // Then
+        double expectedProductTotal = 0.0;
+        Assert.assertEquals(expectedProductTotal, actualTotal, DELTA);
+    }
+
+
+    @Test
+    public void testProductTotal_WithProduct(){
+        // Given
+        Product[] products = new Product[3];
+        products[0] = new Product("T-Shirt", 9.99);
+        products[1] = new Product("Pants", 10.00);
+        products[2] = new Product("Hat", 5.00);
+
+        Cart cart = new Cart(products);
+
+        // When
+        double actualTotal = cart.getProductTotal();
+
+        // Then
+        double expectedProductTotal = 24.99;
+        Assert.assertEquals(expectedProductTotal, actualTotal, DELTA);
+    }
+
+    @Test
+    public void testTotal_WithDiscountButNoProduct(){
+        // Given
+        Product[] products = new Product[]{};
+        Cart cart = new Cart(products);
+
+        // When
+        cart.setDiscount(0.50); // 50% off
+        double actualTotal = cart.getTotal();
+
+        // Then
+        double expectedTotal = 0.0;
+        Assert.assertEquals(expectedTotal, actualTotal, DELTA);
+    }
+
+    @Test
+    public void testTotal_WithDiscountAndProducts(){
+        // Given
+        Product[] products = new Product[2];
+        products[0] = new Product("T-Shirt", 20.10);
+        products[1] = new Product("Pants", 10.00);
+
+        Cart cart = new Cart(products);
+
+        // When
+        cart.setDiscount(0.50); // 50% off
+        double actualTotal = cart.getTotal();
+
+        // Then
+        double expectedTotal = 15.05;
+        Assert.assertEquals(expectedTotal, actualTotal, DELTA);
+    }
+}

src/test/java/org/zipcoder/store/ProductTest.java

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+package org.zipcoder.store;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ProductTest {
+    private static final double DELTA = 0.01;
+
+    @Test
+    public void testConstruction_WithNoParams() {
+        Product product = new Product();
+    }
+
+//    @Test
+//    public void testConstruction_WithName(){
+//        //Given
+//        String expectedName = "T-Shirt";
+//
+//        //When
+//        Product product = new Product(expectedName);
+//
+//        //Then
+//        String actualName = product.getName();
+//        Assert.assertEquals(expectedName, actualName);
+//    }
+//
+//    @Test
+//    public void testConstruction_WithNameAndPrice(){
+//        //Given
+//        String expectedName = "T-Shirt";
+//        double expectedPrice = 19.99;
+//
+//        //When
+//        Product product = new Product(expectedName, expectedPrice);
+//
+//        //Then
+//        String actualName = product.getName();
+//        Assert.assertEquals(expectedName, actualName);
+//
+//        double actualPrice = product.getPrice();
+//        Assert.assertEquals(expectedPrice, actualPrice, DELTA);
+//    }
+//
+//    @Test
+//    public void testGetSetName(){
+//        //Given
+//        String expectedName = "Pants";
+//        Product product = new Product();
+//
+//        //When
+//        product.setName(expectedName);
+//
+//        //Then
+//        String actualName = product.getName();
+//        Assert.assertEquals(expectedName, actualName);
+//    }
+//
+//    @Test
+//    public void testGetSetPrice(){
+//        //Given
+//        double expectedPrice = 15.39;
+//        Product product = new Product();
+//
+//        //When
+//        product.setPrice(expectedPrice);
+//
+//        //Then
+//        double actualPrice = product.getPrice();
+//        Assert.assertEquals(expectedPrice, actualPrice, DELTA);
+//    }
+//
+//    @Test
+//    public void testGetSetSize(){
+//        //Given
+//        int expectedSize = 7;
+//        Product product = new Product();
+//
+//        //When
+//        product.setSize(expectedSize);
+//
+//        //Then
+//        int actualSize = product.getSize();
+//        Assert.assertEquals(expectedSize, actualSize);
+//    }
+//
+//    @Test
+//    public void testGetSetColor(){
+//        //Given
+//        String expectedColor = "Blue";
+//        Product product = new Product();
+//
+//        //When
+//        product.setColor(expectedColor);
+//
+//        //Then
+//        String actualColor = product.getColor();
+//        Assert.assertEquals(expectedColor, actualColor);
+//    }
+//
+//
+//    @Test
+//    public void testGetProductDescription(){
+//        //Given
+//        Product product = new Product();
+//
+//        //When
+//        product.setName("Coat");
+//        product.setColor("Black");
+//        product.setSize(14);
+//
+//        //Then
+//        String expectedDescription = "Coat (Color: Black, Size: 14)";
+//        String actualDescription = product.getDescription();
+//        Assert.assertEquals(expectedDescription, actualDescription);
+//    }
+}