From e92ef0e28b266cad47337357ab2e25134fa9f1c9 Mon Sep 17 00:00:00 2001
From: Brian Bicknell <brister388@gmail.com>
Date: Wed, 9 Sep 2026 09:34:22 -0400
Subject: [PATCH] Added more playlist tests.

---
 Harmonia.Tests/PlaylistTests.cs | 146 ++++++++++++++++++++++++++++++--
 1 file changed, 139 insertions(+), 7 deletions(-)

diff --git a/Harmonia.Tests/PlaylistTests.cs b/Harmonia.Tests/PlaylistTests.cs
index dd6f773..ea8ed09 100644
--- a/Harmonia.Tests/PlaylistTests.cs
+++ b/Harmonia.Tests/PlaylistTests.cs
@@ -8,6 +8,32 @@ namespace Harmonia.Tests;
 
 public class PlaylistTests
 {
+    [Fact]
+    public void Create_Playlist()
+    {
+        Playlist playlist = new();
+        playlist.Name.ShouldBeNull();
+        playlist.Songs.ShouldBeEmpty();
+    }
+
+    [Fact]
+    public void Create_Playlist_With_Name()
+    {
+        Playlist playlist = new("My Playlist");
+        playlist.Name.ShouldBe("My Playlist");
+        playlist.Songs.ShouldBeEmpty();
+    }
+
+    [Fact]
+    public void Set_Playlist_Name()
+    {
+        Playlist playlist = new();
+        playlist.Name.ShouldBeNull();
+
+        playlist.SetName("My Playlist");
+        playlist.Name.ShouldBe("My Playlist");
+    }
+
     [Fact]
     public void Add_Songs()
     {
@@ -37,6 +63,70 @@ public class PlaylistTests
         playlist.Songs[1].Song.FileName.ShouldBe("Song5.mp3");
     }
 
+    [Fact]
+    public void Move_Songs()
+    {
+        Playlist playlist = new();
+
+        Song[] songs =
+        [
+            new Song() { FileName = "Song1.mp3" },
+            new Song() { FileName = "Song2.mp3" },
+            new Song() { FileName = "Song3.mp3" },
+            new Song() { FileName = "Song4.mp3" },
+            new Song() { FileName = "Song5.mp3" },
+        ];
+
+        playlist.AddSongs(songs);
+
+        playlist.MoveSong(2, 3);
+
+        string[] expectedFileNames =
+        [
+            "Song1.mp3",
+            "Song2.mp3",
+            "Song4.mp3",
+            "Song3.mp3",
+            "Song5.mp3"
+        ];
+
+        playlist.Songs.Select(x => x.Song.FileName).ToArray()
+            .ShouldBeEquivalentTo(expectedFileNames);
+    }
+
+    [Fact]
+    public void Remove_Duplicate_Songs()
+    {
+        Playlist playlist = new();
+
+        Song[] songs =
+        [
+            new Song() { FileName = "Song1.mp3" },
+            new Song() { FileName = "Song2.mp3" },
+            new Song() { FileName = "Song3.mp3" },
+            new Song() { FileName = "Song4.mp3" },
+            new Song() { FileName = "Song5.mp3" },
+            new Song() { FileName = "Song2.mp3" },
+            new Song() { FileName = "Song3.mp3" },
+        ];
+
+        playlist.AddSongs(songs);
+
+        playlist.RemoveDuplicateSongs();
+
+        string[] expectedFileNames =
+        [
+            "Song1.mp3",
+            "Song2.mp3",
+            "Song3.mp3",
+            "Song4.mp3",
+            "Song5.mp3"
+        ];
+
+        playlist.Songs.Select(x => x.Song.FileName).ToArray()
+            .ShouldBeEquivalentTo(expectedFileNames);
+    }
+
     [Fact]
     public void Sort_Songs()
     {
@@ -74,6 +164,34 @@ public class PlaylistTests
             .ShouldBeEquivalentTo(expectedSortedFileNames);
     }
 
+    [Fact]
+    public void Reverse_Songs()
+    {
+        Playlist playlist = new();
+
+        Song[] songs =
+        [
+            new Song() { FileName = "Song1.mp3" },
+            new Song() { FileName = "Song2.mp3" },
+            new Song() { FileName = "Song3.mp3" }
+        ];
+
+        playlist.AddSongs(songs);
+
+        PlaylistSong[] playlistSongs = [.. playlist.Songs];
+
+        playlist.Reverse(playlistSongs);
+
+        string[] expectedReversedFileNames =
+        [
+            "Song3.mp3",
+            "Song2.mp3",
+            "Song1.mp3"
+        ];
+        playlist.Songs.Select(x => x.Song.FileName).ToArray()
+            .ShouldBeEquivalentTo(expectedReversedFileNames);
+    }
+
     [Fact]
     public void Remove_Songs()
     {
@@ -101,7 +219,7 @@ public class PlaylistTests
     }
 
     [Fact]
-    public void Lock_Playlist()
+    public void Lock_And_Unlock_Playlist()
     {
         Playlist playlist = new();
 
@@ -114,8 +232,12 @@ public class PlaylistTests
 
         playlist.AddSongs(songs);
 
+        playlist.IsLocked.ShouldBeFalse();
+
         playlist.Lock();
 
+        playlist.IsLocked.ShouldBeTrue();
+
         Song song = new() { FileName = "Song4.mp3" };
         playlist.AddSong(song);
 
@@ -124,11 +246,21 @@ public class PlaylistTests
         playlist.RemoveSong(0);
 
         playlist.Songs.Count.ShouldBe(3);
-    }
 
-    //public void Get_Playlists()
-    //{
-    //    //PlaylistRepository playlistRepository = new();
-    //    //playlistRepository.Get().Returns()
-    //}
+        playlist.MoveSong(0, 2);
+
+        string[] expectedMovedFileNamesOnLockedPlaylist =
+        [
+            "Song1.mp3",
+            "Song2.mp3",
+            "Song3.mp3"
+        ];
+
+        playlist.Songs.Select(x => x.Song.FileName).ToArray()
+            .ShouldBeEquivalentTo(expectedMovedFileNamesOnLockedPlaylist);
+
+        playlist.Unlock();
+
+        playlist.IsLocked.ShouldBeFalse();
+    }
 }
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