Add project reference for TeleWave.Infrastructure: include TeleWave.Infrastructure.csproj in TeleWave.Application.Tests project to support additional testing capabilities.

backend/tests/TeleWave.Domain.Tests/Library/ShowEpisodeTests.cs

@@ -0,0 +1,53 @@
+using TeleWave.Domain.Library;
+using Xunit;
+
+namespace TeleWave.Domain.Tests.Library;
+
+public class ShowEpisodeTests
+{
+    private static ShowEpisode NewEpisode() =>
+        Show.Create("A", ShowKind.Series).AddEpisode(Guid.NewGuid());
+
+    [Fact]
+    public void SetNumbers_StoresSeasonEpisode()
+    {
+        var e = NewEpisode();
+        e.SetNumbers(3, 7);
+
+        Assert.Equal(3, e.Season);
+        Assert.Equal(7, e.Episode);
+    }
+
+    [Fact]
+    public void ApplyMetadata_SetsFields_StillOnlyWhenProvided()
+    {
+        var e = NewEpisode();
+        var still = Guid.NewGuid();
+        var air = new DateOnly(2020, 5, 1);
+
+        e.ApplyMetadata("Title", "Overview", still, air);
+        Assert.Equal("Title", e.Title);
+        Assert.Equal("Overview", e.Overview);
+        Assert.Equal(still, e.StillImageId);
+        Assert.Equal(air, e.AirDate);
+
+        // Повторно без кадра — существующий не затирается.
+        e.ApplyMetadata("T2", "O2", null, null);
+        Assert.Equal(still, e.StillImageId);
+        Assert.Equal("T2", e.Title);
+    }
+
+    [Fact]
+    public void ClearMetadata_ResetsAll()
+    {
+        var e = NewEpisode();
+        e.ApplyMetadata("T", "O", Guid.NewGuid(), new DateOnly(2020, 1, 1));
+
+        e.ClearMetadata();
+
+        Assert.Null(e.Title);
+        Assert.Null(e.Overview);
+        Assert.Null(e.StillImageId);
+        Assert.Null(e.AirDate);
+    }
+}