3 files changed, 76 insertions, 3 deletions

diff --git a/src/main/java/musichub/business/PathValidation.java b/src/main/java/musichub/business/PathValidation.java
new file mode 100644
index 0000000..b0281ba
--- /dev/null
+++ b/src/main/java/musichub/business/PathValidation.java
@@ -0,0 +1,39 @@
+package musichub.business;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+/**
+ * Class offering a path validation method.
+ *
+ * @author Aimeric ADJUTOR
+ * @version 1.0
+ */
+
+public final class PathValidation {
+
+    /**
+     * Method that just throws an AssertionError if the class is called
+     *
+     * @throws AssertionError you can't instantiate this class
+     * @author Aimeric ADJUTOR
+     */
+
+    public PathValidation() {
+        throw new AssertionError("You just can't instantiate this class.");
+    }
+
+    /**
+     * Method that checks the validity of a given path
+     *
+     * @param inputPath the path given by the user
+     * @return a boolean
+     */
+
+    public static boolean isPathValid(String inputPath) {
+        Path path = Paths.get(inputPath);
+        return Files.exists(path);
+    }
+
+}
\ No newline at end of file
diff --git a/src/main/java/musichub/main/Main.java b/src/main/java/musichub/main/Main.java
index 2876734..e2e4731 100644
--- a/src/main/java/musichub/main/Main.java
+++ b/src/main/java/musichub/main/Main.java
@@ -2,13 +2,14 @@ package musichub.main;
 
 import musichub.business.*;
 
+import javax.sound.sampled.LineUnavailableException;
+import javax.sound.sampled.UnsupportedAudioFileException;
 import java.io.IOException;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Scanner;
 
-import javax.sound.sampled.LineUnavailableException;
-import javax.sound.sampled.UnsupportedAudioFileException;
+import static musichub.business.PathValidation.isPathValid;
 
 public class Main {
     public static void main(String[] args) throws UnsupportedAudioFileException, IOException, LineUnavailableException {
@@ -47,7 +48,7 @@ public class Main {
                     albumTitle = scan.nextLine();
                     try {
                     	List<Song> songs = theHub.getAlbumSongsSortedByGenre(albumTitle);
-                        System.out.println(songs);;
+                        System.out.println(songs);
                     } catch (NoAlbumFoundException ex) {
                         System.out.println("No album found with the requested title " + ex.getMessage());
                     }
@@ -88,8 +89,15 @@ public class Main {
                     String artist = scan.nextLine();
                     System.out.println("Song length in seconds: ");
                     int length = Integer.parseInt(scan.nextLine());
+
                     System.out.println("Song content: ");
                     String content = scan.nextLine();
+                    if (!isPathValid(content)) {
+                        System.out.println("The music file was not found with the path you've provided.\nType h for available commands");
+                        choice = scan.nextLine();
+                        break;
+                    }
+
                     Song s = new Song(title, artist, length, content, genre);
                     theHub.addElement(s);
                     System.out.println("New element list: ");
diff --git a/src/test/java/musichub/business/PathValidationTest.java b/src/test/java/musichub/business/PathValidationTest.java
new file mode 100644
index 0000000..fffbdde
--- /dev/null
+++ b/src/test/java/musichub/business/PathValidationTest.java
@@ -0,0 +1,26 @@
+package musichub.business;
+
+
+import org.junit.jupiter.api.Test;
+
+import static musichub.business.PathValidation.isPathValid;
+import static org.junit.jupiter.api.Assertions.*;
+
+public class PathValidationTest {
+    @Test
+    void testIsPathValid() {
+        assertTrue(isPathValid("Song/Side_To_Side.wav")); //the right path
+        assertFalse(isPathValid("wrong_path/Side_To_Side.wav")); //wrong path
+        assertFalse(isPathValid("Song/Side_To_Side.mp3")); //wrong extension
+    }
+
+    @Test
+    void testPathValidationClass() {
+        try {
+            PathValidation pathValidationClass = new PathValidation();
+        } catch (Error ex) {
+            assertTrue(ex instanceof AssertionError);
+            assertEquals("You just can't instantiate this class.", ex.getMessage());
+        }
+    }
+}