feat: adds Lesson 16- Kimberlee's object-"headphones" with unit tests

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/KimberleeObject/ConnectionNotFoundException.java

@@ -0,0 +1,7 @@
+package com.codedifferently.lesson16.KimberleeObject;
+
+public class ConnectionNotFoundException extends Exception {
+  public ConnectionNotFoundException(String message) {
+    super(message);
+  }
+}

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/KimberleeObject/HeadPhones.java

@@ -0,0 +1,134 @@
+package com.codedifferently.lesson16.KimberleeObject;
+
+import java.util.Arrays;
+
+public class HeadPhones {
+
+  private int volume = 0;
+  private boolean isPoweredOn = false;
+  private HeadPhoneColor headPhoneColor = HeadPhoneColor.BLACK;
+  private boolean isWireless = true;
+  private String brands = "Beats";
+  boolean isPreferredBrand = BrandUtils.isPreferredBrand(brands);
+  private boolean isConnectedToBluetooth = false;
+
+  public enum BoostMode {
+    BASS_BOOST,
+    VOCAL_BOOST,
+    TREBLE_BOOST;
+  }
+
+  private BoostMode currentMode;
+  private BoostMode[] modes = BoostMode.values();
+  private int currentModeIndex = 0;
+
+  public HeadPhones() {
+    this.currentMode = BoostMode.BASS_BOOST;
+    System.out.println("Constructor called: currentMode set to " + currentMode);
+  }
+
+  public void nextBoostMode() {
+    currentModeIndex = (currentModeIndex + 1) % modes.length;
+    currentMode = modes[currentModeIndex];
+  }
+
+  public BoostMode getCurrentMode() {
+    System.out.println("getCurrentMode called: currentMode is " + currentMode);
+    return currentMode;
+  }
+
+  public enum HeadPhoneColor {
+    RED,
+    BLUE,
+    ROSEGOLD,
+    PINK,
+    WHITE,
+    BLACK;
+  }
+
+  public void BrandsArray() {
+    String[] brands = new String[5];
+    brands[0] = "Beats";
+    brands[1] = "Sony";
+    brands[2] = "Bose";
+    brands[3] = "SkullCandy";
+    brands[4] = "Juicy";
+  }
+
+  public int getVolume() {
+    return volume;
+  }
+
+  public HeadPhoneColor getHeadPhoneColor() {
+    return headPhoneColor;
+  }
+
+  public boolean isPoweredOn() {
+    return isPoweredOn;
+  }
+
+  public boolean isWireless() {
+    return isWireless;
+  }
+
+  public String[] getBrandsArray() {
+    return BrandUtils.PREFERRED_BRANDS;
+  }
+
+  public void turnOn() {
+    isPoweredOn = true;
+  }
+
+  public void turnOff() {
+    isPoweredOn = false;
+  }
+
+  public void increaseVolume() {
+    if (volume < 100) {
+      volume++;
+    }
+  }
+
+  public void setVolume(int volume) {
+    if (volume >= 0 && volume <= 100) {
+      this.volume = volume;
+    }
+  }
+
+  public void decreaseVolume() {
+    if (volume > 0) {
+      volume--;
+    }
+  }
+
+  public void setColor(HeadPhoneColor color) {
+    this.headPhoneColor = color;
+  }
+
+  public class BrandUtils {
+    private static final String[] PREFERRED_BRANDS = {
+      "Beats", "Sony", "Bose", "SkullCandy", "Juicy"
+    };
+
+    public static boolean isPreferredBrand(String brand) {
+      return Arrays.asList(PREFERRED_BRANDS).contains(brand);
+    }
+  }
+
+  public boolean connectToBluetooth() {
+    if (isPoweredOn && isWireless) {
+      isConnectedToBluetooth = true;
+    }
+    return isConnectedToBluetooth;
+  }
+
+  public boolean isConnectedToBluetooth() {
+    return connectToBluetooth();
+  }
+
+  public void wirelessConnection() throws ConnectionNotFoundException {
+    if (!isConnectedToBluetooth) {
+      throw new ConnectionNotFoundException("Headphones Wireless Connection Not Found.");
+    }
+  }
+}

lesson_16/objects/objects_app/src/test/java/com/codedifferently/lesson16/KimberleeObjectTest/HeadPhonesTest.java

@@ -0,0 +1,151 @@
+package com.codedifferently.lesson16.KimberleeObjectTest;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.jupiter.api.Assertions.*;
+
+import com.codedifferently.lesson16.KimberleeObject.ConnectionNotFoundException;
+import com.codedifferently.lesson16.KimberleeObject.HeadPhones;
+import com.codedifferently.lesson16.KimberleeObject.HeadPhones.BoostMode;
+import com.codedifferently.lesson16.KimberleeObject.HeadPhones.HeadPhoneColor;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class HeadPhonesTest {
+
+  private HeadPhones headphones;
+
+  @BeforeEach
+  public void setUp() {
+    headphones = new HeadPhones();
+  }
+
+  @Test
+  public void testDefaultState() {
+    assertEquals(0, headphones.getVolume(), "Volume should be 0 by default.");
+    assertEquals(
+        HeadPhoneColor.BLACK, headphones.getHeadPhoneColor(), "Color should be black by default.");
+    assertFalse(headphones.isPoweredOn(), "HeadPhones should be off by default.");
+    assertTrue(headphones.isWireless(), "HeadPhones should be wireless by default.");
+    assertArrayEquals(new String[] {"Beats"}, new String[] {"Beats"});
+    assertEquals(
+        BoostMode.BASS_BOOST,
+        headphones.getCurrentMode(),
+        "BASS_BOOST should be the default setting.");
+  }
+
+  @Test
+  public void testTurnOn() {
+    // Act
+    headphones.turnOn();
+    // Assert
+    assertTrue(headphones.isPoweredOn(), "Headphones should turn on after calling turnOn");
+  }
+
+  @Test
+  public void testTurnOff() {
+    // Arrange
+    headphones.turnOn();
+    // Act
+    headphones.turnOff();
+    // Assert
+    assertFalse(headphones.isPoweredOn(), "Headphones should turn off after calling");
+  }
+
+  @Test
+  public void testIncreaseVolume() {
+    // Arrange
+    headphones.turnOn();
+    headphones.increaseVolume();
+    assertEquals(1, headphones.getVolume(), "Volume should increase by 1");
+    // Act
+    headphones.setVolume(99);
+    headphones.increaseVolume();
+    // Assert
+    assertEquals(100, headphones.getVolume(), "Volume should not exceed 100.");
+  }
+
+  @Test
+  public void testDecreaseVolume() {
+    // Arrange
+    headphones.turnOn();
+    headphones.setVolume(1);
+    headphones.decreaseVolume();
+    assertEquals(0, headphones.getVolume(), "Volume should decrease to 0.");
+    // Act
+    headphones.decreaseVolume();
+    // Assert
+    assertEquals(0, headphones.getVolume(), "Volume should not go lower than 0.");
+  }
+
+  @Test
+  public void testSetColor() {
+    // Act
+    headphones.setColor(HeadPhoneColor.ROSEGOLD);
+    // Assert
+    assertEquals(
+        HeadPhoneColor.ROSEGOLD,
+        headphones.getHeadPhoneColor(),
+        "Headphone color should be set to Rose Gold.");
+  }
+
+  @Test
+  public void testPreferredBrand() {
+    // Assert
+    assertTrue(
+        HeadPhones.BrandUtils.isPreferredBrand("Beats"), "Beats should be a preferred brand.");
+    assertTrue(HeadPhones.BrandUtils.isPreferredBrand("Sony"), "Sony should be a preferred brand.");
+    assertFalse(
+        HeadPhones.BrandUtils.isPreferredBrand("Apple"), "Apple should not be a preferred brand.");
+    assertTrue(
+        HeadPhones.BrandUtils.isPreferredBrand("SkullCandy"),
+        "SkullCandy should be a preferred brand.");
+    assertTrue(
+        HeadPhones.BrandUtils.isPreferredBrand("Juicy"), "Juicy should be a preferred brand.");
+  }
+
+  @Test
+  public void testwirelessConnection() throws Exception {
+    // Arrange
+    headphones.turnOn();
+    // Act
+    headphones.connectToBluetooth();
+    // Assert
+    assertTrue(
+        headphones.isConnectedToBluetooth(),
+        "Headphones should connect to bluetooh when wireless and turned on.");
+  }
+
+  @Test
+  public void testwirelessConnection_connectionNotFound() throws Exception {
+    // Act
+    assertThatThrownBy(() -> headphones.wirelessConnection())
+        .isInstanceOf(ConnectionNotFoundException.class)
+        .hasMessage("Headphones Wireless Connection Not Found.");
+  }
+
+  @Test
+  public void testBoostMode() {
+    assertEquals(
+        BoostMode.BASS_BOOST,
+        headphones.getCurrentMode(),
+        "BASS_BOOST should be the default setting.");
+
+    headphones.nextBoostMode();
+    assertEquals(
+        BoostMode.VOCAL_BOOST,
+        headphones.getCurrentMode(),
+        "The next Boost setting should be VOCAL.");
+
+    headphones.nextBoostMode();
+    assertEquals(
+        BoostMode.TREBLE_BOOST,
+        headphones.getCurrentMode(),
+        "The next Boost setting should be TREBLE.");
+
+    headphones.nextBoostMode();
+    assertEquals(
+        BoostMode.BASS_BOOST,
+        headphones.getCurrentMode(),
+        "BoostMode cycle should return to BASS_BOOST.");
+  }
+}