fix: wrorking to fix code errors in lesson 16

Author: JEKLUND251

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/justins_playlist/com/codedifferently/lesson16/Justins/com/codedifferently/lesson16/justinsplaylist/playlist.java

@@ -0,0 +1,36 @@
+package com.codedifferently.lesson16.justinsplaylist;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class playlist {
+    private String name;
+    private String genre;
+    private int duration;
+    private List<String> songs;
+
+    public playlist(String name, String genre, int duration) {
+        this.name = name;
+        this.genre = genre;
+        this.duration = duration;
+        this.songs = new ArrayList<>();
+    }
+
+    // Getters and Setters
+    public String getName() { return name; }
+    public void setName(String name) { this.name = name; }
+
+    public String getGenre() { return genre; }
+    public void setGenre(String genre) { this.genre = genre; }
+
+    public int getDuration() { return duration; }
+    public void setDuration(int duration) { this.duration = duration; }
+
+    public String getDetails() {
+        return "Name: " + name + ", Genre: " + genre + ", Duration: " + duration;
+    }
+
+    
+        
+    
+}

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/justins_playlist/playlistexception.java

@@ -0,0 +1,23 @@
+package com.codedifferently.lesson16.JustinsPylaylist;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Playlist {
+    private final List<String> songs = new ArrayList<>();
+
+    public void addSong(String song) {
+        songs.add(song);
+    }
+
+    public void playAll() {
+        if (songs.isEmpty()) {
+            throw new IllegalStateException("No songs in the playlist to play.");
+        }
+
+        System.out.println("Playing all songs in the playlist:");
+        for (String song : songs) {
+            System.out.println("Playing: " + song);
+        }
+    }
+}

lesson_16/objects/objects_app/src/test/java/com/codedifferently/lesson16/playlist.test/playlistTest.java

@@ -0,0 +1,49 @@
+package com.codedifferently.lesson16.justinsplaylist;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import static org.assertj.core.api.Assertions.*;
+import static org.assertj.core.api.assertThat;
+import com.codedifferently.lesson16.JustinsPlaylist.Playlist;
+
+public class playlistTest {
+
+    private playlist playlist;
+
+    @BeforeEach
+    public void setUp() {
+        playlist = new playlist("Chill Vibes", "Lo-Fi", 120);
+    }
+
+    @Test
+    public void testGetDetailsReturnsCorrectInfo() {
+        String details = playlist.getDetails();
+        assertThat(details).isEqualTo("Name: Chill Vibes, Genre: Lo-Fi, Duration: 120");
+    }
+
+    @Test
+    public void testAddSongSuccessfully() {
+        playlist.addSong("Evening Walk");
+        assertThatCode(() -> playlist.playAll()).doesNotThrowAnyException();
+    }
+
+    @Test
+    public void testAddSongThrowsExceptionOnEmptyInput() {
+        assertThatThrownBy(() -> Playlist.addSong("   "))
+            .isInstanceOf(IllegalArgumentException.class)
+            .hasMessage("Cannot add a null or empty song.");
+    }
+
+    @Test
+    public void testPlayAllThrowsExceptionWhenNoSongs() {
+        assertThatThrownBy(() -> playlist.playAll())
+            .isInstanceOf(IllegalStateException.class)
+            .hasMessage("No songs in the playlist to play.");
+    }
+
+    @Test
+    public void testSetAndGetName() {
+        playlist.setName("Late Night Beats");
+        assertThat(playlist.getName()).isEqualTo("Late Night Beats");
+    }
+}

lesson_16/objects/objects_app/src/test/java/com/codedifferently/lesson16/playlist.test/playlistexceptionTest.java

@@ -0,0 +1,41 @@
+package com.codedifferently.lesson16.playlist.test;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.*;
+
+public class PlaylistTest {
+
+    private playlist playlist;
+
+    @BeforeEach
+    public void setUp() {
+        playlist = new playlist();
+    }
+
+    @Test
+    public void testAddSongDoesNotThrow() {
+        assertThatCode(() -> playlist.addSong("My Favorite Song"))
+            .doesNotThrowAnyException();
+    }
+
+    @Test
+    public void testPlayAllThrowsWhenNoSongs() {
+        assertThatThrownBy(() -> playlist.playAll())
+            .isInstanceOf(IllegalStateException.class)
+            .hasMessage("No songs in the playlist to play.");
+    }
+
+    @Test
+    public void testPlayAllPlaysSongsWhenNotEmpty() {
+        playlist.addSong("Song 1");
+        playlist.addSong("Song 2");
+
+        // We're not capturing console output here — just making sure no exceptions are thrown
+        assertThatCode(() -> playlist.playAll())
+            .doesNotThrowAnyException();
+    }
+}
+
+}