feat: adds lesson_14 homework and lesson_15 pre-work

.github/workflows/check_lesson_14_java_pr.yaml

@@ -0,0 +1,27 @@
+name: Check Lesson 14 Java Pull Request
+
+on:
+  pull_request:
+    branches: [ "main" ]
+    paths:
+      - "lesson_14/exceptions/**"
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+
+    - name: Build Lesson 13 with Java
+      working-directory: ./lesson_14/exceptions
+      run: ./gradlew check

.github/workflows/check_push.yml

@@ -17,6 +17,7 @@ on:
       - "lesson_12/structs_ts/**"
       - "lesson_13/maps_java/**"
       - "lesson_13/maps_ts/**"
+      - "lesson_14/exceptions/**"
 
 jobs:
   build:
@@ -117,3 +118,7 @@ jobs:
       run: |
         npm ci
         npm run compile
+
+    - name: Build Lesson 14 with Java
+      working-directory: ./lesson_14/exceptions
+      run: ./gradlew assemble

lesson_14/README.md

@@ -9,4 +9,13 @@ Please review the following resources before lecture:
 
 ## Homework
 
-TODO(anthonydmays): Complete this
+- [ ] Complete [Exception Handling](#exception-handling) assignment.
+- [ ] Do pre-work for [lesson 15](/lesson_15/).
+
+### Exception Handling
+
+For this assignment, you will update existing code to add exceptions for unsupported operations in an e-commerce system.
+
+To complete this assignment, [use the tests][test-link] to understand what you need to implement in order to get the tests to pass.
+
+[test-link]: ./exceptions/exceptions_app/src/test/java/com/codedifferently/lesson14/ecommerce/EcommerceSystemTest.java

lesson_14/exceptions/.gitattributes

@@ -0,0 +1,9 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+

lesson_14/exceptions/.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

lesson_14/exceptions/exceptions_app/build.gradle.kts

@@ -0,0 +1,64 @@
+plugins {
+    // Apply the application plugin to add support for building a CLI application in Java.
+    application
+    eclipse
+    id("com.diffplug.spotless") version "6.25.0"
+	  id("org.springframework.boot") version "3.2.2"
+    id("com.adarshr.test-logger") version "4.0.0"
+}
+
+apply(plugin = "io.spring.dependency-management")
+
+repositories {
+    // Use Maven Central for resolving dependencies.
+    mavenCentral()
+}
+
+dependencies {
+    // Use JUnit Jupiter for testing.
+    testImplementation("com.codedifferently.instructional:instructional-lib")
+    testImplementation("org.junit.jupiter:junit-jupiter:5.9.1")
+    testImplementation("org.springframework.boot:spring-boot-starter-test")
+    testImplementation("org.assertj:assertj-core:3.25.1")
+    testImplementation("at.favre.lib:bcrypt:0.10.2")
+
+    // This dependency is used by the application.
+    implementation("com.codedifferently.instructional:instructional-lib")
+    implementation("com.google.guava:guava:31.1-jre")
+    implementation("com.google.code.gson:gson:2.10.1")
+    implementation("org.projectlombok:lombok:1.18.30")
+    implementation("org.springframework.boot:spring-boot-starter")
+}
+
+application {
+    // Define the main class for the application.
+    mainClass.set("com.codedifferently.lesson12.Lesson12")
+}
+
+tasks.named<Test>("test") {
+    // Use JUnit Platform for unit tests.
+    useJUnitPlatform()
+}
+
+
+configure<com.diffplug.gradle.spotless.SpotlessExtension> {
+
+  format("misc", {
+    // define the files to apply `misc` to
+    target("*.gradle", ".gitattributes", ".gitignore")
+
+    // define the steps to apply to those files
+    trimTrailingWhitespace()
+    indentWithTabs() // or spaces. Takes an integer argument if you don't like 4
+    endWithNewline()
+  })
+
+  java {
+    // don't need to set target, it is inferred from java
+
+    // apply a specific flavor of google-java-format
+    googleJavaFormat()
+    // fix formatting of type annotations
+    formatAnnotations()
+  }
+}

lesson_14/exceptions/exceptions_app/src/main/java/com/codedifferently/lesson14/Lesson14.java

@@ -0,0 +1,8 @@
+package com.codedifferently.lesson14;
+
+public class Lesson14 {
+
+  public static void main(String[] args) {
+    System.out.println("Hello World");
+  }
+}

lesson_14/exceptions/exceptions_app/src/main/java/com/codedifferently/lesson14/ecommerce/EcommerceSystem.java

@@ -0,0 +1,40 @@
+package com.codedifferently.lesson14.ecommerce;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+public class EcommerceSystem {
+  private Map<String, Product> products;
+  private Map<String, Order> orders;
+
+  public EcommerceSystem() {
+    products = new HashMap<>();
+    orders = new HashMap<>();
+  }
+
+  public void addProduct(String productId, String name) {
+    products.put(productId, new Product(productId, name));
+  }
+
+  public String placeOrder(String productId, int quantity) {
+    Product product = products.get(productId);
+    String orderId = UUID.randomUUID().toString();
+    orders.put(orderId, new Order(orderId, product, quantity));
+    return orderId;
+  }
+
+  public void cancelOrder(String orderId) {
+    orders.remove(orderId);
+  }
+
+  public String checkOrderStatus(String orderId) {
+    Order order = orders.get(orderId);
+    return "Order ID: "
+        + orderId
+        + ", Product: "
+        + order.getProduct().getName()
+        + ", Quantity: "
+        + order.getQuantity();
+  }
+}

lesson_14/exceptions/exceptions_app/src/main/java/com/codedifferently/lesson14/ecommerce/Order.java

@@ -0,0 +1,25 @@
+package com.codedifferently.lesson14.ecommerce;
+
+public class Order {
+  private String orderId;
+  private Product product;
+  private int quantity;
+
+  public Order(String orderId, Product product, int quantity) {
+    this.orderId = orderId;
+    this.product = product;
+    this.quantity = quantity;
+  }
+
+  public String getOrderId() {
+    return orderId;
+  }
+
+  public Product getProduct() {
+    return product;
+  }
+
+  public int getQuantity() {
+    return quantity;
+  }
+}

lesson_14/exceptions/exceptions_app/src/main/java/com/codedifferently/lesson14/ecommerce/OrderNotFoundException.java

@@ -0,0 +1,8 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+
+package com.codedifferently.lesson14.ecommerce;
+
+class OrderNotFoundException {}

lesson_14/exceptions/exceptions_app/src/main/java/com/codedifferently/lesson14/ecommerce/Product.java

@@ -0,0 +1,19 @@
+package com.codedifferently.lesson14.ecommerce;
+
+public class Product {
+  private String productId;
+  private String name;
+
+  public Product(String productId, String name) {
+    this.productId = productId;
+    this.name = name;
+  }
+
+  public String getProductId() {
+    return productId;
+  }
+
+  public String getName() {
+    return name;
+  }
+}

lesson_14/exceptions/exceptions_app/src/main/java/com/codedifferently/lesson14/ecommerce/ProductNotFoundException.java

@@ -0,0 +1,8 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+
+package com.codedifferently.lesson14.ecommerce;
+
+class ProductNotFoundException {}

lesson_14/exceptions/exceptions_app/src/test/java/com/codedifferently/lesson14/Lesson14Test.java

@@ -0,0 +1,15 @@
+package com.codedifferently.lesson14;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+class Lesson14Test {
+
+  @Test
+  public void testLesson14() {
+    var solution = new Lesson14();
+
+    assertThat(solution).isNotNull();
+  }
+}

lesson_14/exceptions/exceptions_app/src/test/java/com/codedifferently/lesson14/ecommerce/EcommerceSystemTest.java

@@ -0,0 +1,75 @@
+package com.codedifferently.lesson14.ecommerce;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+class EcommerceSystemTest {
+
+  EcommerceSystem ecommerceSystem;
+
+  @BeforeEach
+  void setUp() {
+    ecommerceSystem = new EcommerceSystem();
+  }
+
+  @Test
+  void testAddProduct() {
+    // Act
+    ecommerceSystem.addProduct("1", "Laptop");
+  }
+
+  @Test
+  void testPlaceOrder() throws Exception {
+    // Arrange
+    ecommerceSystem.addProduct("1", "Laptop");
+
+    // Act
+    String orderId = ecommerceSystem.placeOrder("1", 1);
+
+    // Assert
+    String actual = ecommerceSystem.checkOrderStatus(orderId);
+    assertThat(actual).isEqualTo("Order ID: " + orderId + ", Product: Laptop, Quantity: 1");
+  }
+
+  @Test
+  void testPlaceOrder_productDoesNotExist() throws Exception {
+    // Act
+    assertThatThrownBy(() -> ecommerceSystem.placeOrder("1", 1))
+        .isInstanceOf(ProductNotFoundException.class)
+        .hasMessage("Product with ID 1 not found");
+  }
+
+  @Test
+  void testCancelOrder() throws Exception {
+    // Arrange
+    ecommerceSystem.addProduct("1", "Laptop");
+    String orderId = ecommerceSystem.placeOrder("1", 1);
+
+    // Act
+    ecommerceSystem.cancelOrder(orderId);
+  }
+
+  @Test
+  void testCheckOrderStatus_orderDoesNotExist() {
+    // Act
+    assertThatThrownBy(() -> ecommerceSystem.checkOrderStatus("1"))
+        .isInstanceOf(OrderNotFoundException.class)
+        .hasMessage("Order with ID 1 not found");
+  }
+
+  @Test
+  void testCheckOrderStatus_orderCancelled() throws Exception {
+    // Arrange
+    ecommerceSystem.addProduct("1", "Laptop");
+    String orderId = ecommerceSystem.placeOrder("1", 1);
+    ecommerceSystem.cancelOrder(orderId);
+
+    // Act
+    assertThatThrownBy(() -> ecommerceSystem.checkOrderStatus("1"))
+        .isInstanceOf(OrderNotFoundException.class)
+        .hasMessage("Order with ID 1 not found");
+  }
+}

lesson_14/exceptions/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0.2-bin.zip
+networkTimeout=10000
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists