1 files changed, 30 insertions, 0 deletions
diff --git a/tests/Jellyfin.Server.Implementations.Tests/Library/MediaStreamSelectorTests.cs b/tests/Jellyfin.Server.Implementations.Tests/Library/MediaStreamSelectorTests.cs
new file mode 100644
index 000000000..d59f2f4e5
--- /dev/null
+++ b/tests/Jellyfin.Server.Implementations.Tests/Library/MediaStreamSelectorTests.cs
@@ -0,0 +1,30 @@
+using System;
+using Emby.Server.Implementations.Library;
+using MediaBrowser.Model.Entities;
+using Xunit;
+
+namespace Jellyfin.Server.Implementations.Tests.Library;
+
+public class MediaStreamSelectorTests
+{
+    [Theory]
+    [InlineData(true)]
+    [InlineData(false)]
+    public void GetDefaultAudioStreamIndex_EmptyStreams_Null(bool preferDefaultTrack)
+    {
+        Assert.Null(MediaStreamSelector.GetDefaultAudioStreamIndex(Array.Empty<MediaStream>(), Array.Empty<string>(), preferDefaultTrack));
+    }
+
+    [Theory]
+    [InlineData(true)]
+    [InlineData(false)]
+    public void GetDefaultAudioStreamIndex_WithoutDefault_NotNull(bool preferDefaultTrack)
+    {
+        var streams = new[]
+        {
+            new MediaStream()
+        };
+
+        Assert.NotNull(MediaStreamSelector.GetDefaultAudioStreamIndex(streams, Array.Empty<string>(), preferDefaultTrack));
+    }
+}