1 files changed, 139 insertions, 0 deletions
diff --git a/tests/Jellyfin.Model.Tests/Entities/ProviderIdsExtensionsTests.cs b/tests/Jellyfin.Model.Tests/Entities/ProviderIdsExtensionsTests.cs
new file mode 100644
index 000000000..c1a1525ba
--- /dev/null
+++ b/tests/Jellyfin.Model.Tests/Entities/ProviderIdsExtensionsTests.cs
@@ -0,0 +1,139 @@
+using System;
+using System.Collections.Generic;
+using MediaBrowser.Model.Entities;
+using Xunit;
+
+namespace Jellyfin.Model.Tests.Entities
+{
+    public class ProviderIdsExtensionsTests
+    {
+        private const string ExampleImdbId = "tt0113375";
+
+        [Fact]
+        public void GetProviderId_NullInstance_ThrowsArgumentNullException()
+        {
+            Assert.Throws<ArgumentNullException>(() => ProviderIdsExtensions.GetProviderId(null!, MetadataProvider.Imdb));
+        }
+
+        [Fact]
+        public void GetProviderId_NullName_ThrowsArgumentNullException()
+        {
+            Assert.Throws<ArgumentNullException>(() => ProviderIdsExtensionsTestsObject.Empty.GetProviderId(null!));
+        }
+
+        [Fact]
+        public void GetProviderId_NotFoundName_Null()
+        {
+            Assert.Null(ProviderIdsExtensionsTestsObject.Empty.GetProviderId(MetadataProvider.Imdb));
+        }
+
+        [Fact]
+        public void GetProviderId_NullProvider_Null()
+        {
+            var nullProvider = new ProviderIdsExtensionsTestsObject()
+            {
+                ProviderIds = null!
+            };
+
+            Assert.Null(nullProvider.GetProviderId(MetadataProvider.Imdb));
+        }
+
+        [Fact]
+        public void TryGetProviderId_NotFoundName_False()
+        {
+            Assert.False(ProviderIdsExtensionsTestsObject.Empty.TryGetProviderId(MetadataProvider.Imdb, out _));
+        }
+
+        [Fact]
+        public void TryGetProviderId_NullProvider_False()
+        {
+            var nullProvider = new ProviderIdsExtensionsTestsObject()
+            {
+                ProviderIds = null!
+            };
+
+            Assert.False(nullProvider.TryGetProviderId(MetadataProvider.Imdb, out _));
+        }
+
+        [Fact]
+        public void GetProviderId_FoundName_Id()
+        {
+            var provider = new ProviderIdsExtensionsTestsObject();
+            provider.ProviderIds[MetadataProvider.Imdb.ToString()] = ExampleImdbId;
+
+            Assert.Equal(ExampleImdbId, provider.GetProviderId(MetadataProvider.Imdb));
+        }
+
+        [Fact]
+        public void TryGetProviderId_FoundName_True()
+        {
+            var provider = new ProviderIdsExtensionsTestsObject();
+            provider.ProviderIds[MetadataProvider.Imdb.ToString()] = ExampleImdbId;
+
+            Assert.True(provider.TryGetProviderId(MetadataProvider.Imdb, out var id));
+            Assert.Equal(ExampleImdbId, id);
+        }
+
+        [Fact]
+        public void SetProviderId_NullInstance_ThrowsArgumentNullException()
+        {
+            Assert.Throws<ArgumentNullException>(() => ProviderIdsExtensions.SetProviderId(null!, MetadataProvider.Imdb, ExampleImdbId));
+        }
+
+        [Fact]
+        public void SetProviderId_Null_Remove()
+        {
+            var provider = new ProviderIdsExtensionsTestsObject();
+            provider.SetProviderId(MetadataProvider.Imdb, null!);
+            Assert.Empty(provider.ProviderIds);
+        }
+
+        [Fact]
+        public void SetProviderId_EmptyName_Remove()
+        {
+            var provider = new ProviderIdsExtensionsTestsObject();
+            provider.ProviderIds[MetadataProvider.Imdb.ToString()] = ExampleImdbId;
+            provider.SetProviderId(MetadataProvider.Imdb, string.Empty);
+            Assert.Empty(provider.ProviderIds);
+        }
+
+        [Fact]
+        public void SetProviderId_NonEmptyId_Success()
+        {
+            var provider = new ProviderIdsExtensionsTestsObject();
+            provider.SetProviderId(MetadataProvider.Imdb, ExampleImdbId);
+            Assert.Single(provider.ProviderIds);
+        }
+
+        [Fact]
+        public void SetProviderId_NullProvider_Success()
+        {
+            var nullProvider = new ProviderIdsExtensionsTestsObject()
+            {
+                ProviderIds = null!
+            };
+
+            nullProvider.SetProviderId(MetadataProvider.Imdb, ExampleImdbId);
+            Assert.Single(nullProvider.ProviderIds);
+        }
+
+        [Fact]
+        public void SetProviderId_NullProviderAndEmptyName_Success()
+        {
+            var nullProvider = new ProviderIdsExtensionsTestsObject()
+            {
+                ProviderIds = null!
+            };
+
+            nullProvider.SetProviderId(MetadataProvider.Imdb, string.Empty);
+            Assert.Null(nullProvider.ProviderIds);
+        }
+
+        private class ProviderIdsExtensionsTestsObject : IHasProviderIds
+        {
+            public static readonly ProviderIdsExtensionsTestsObject Empty = new ProviderIdsExtensionsTestsObject();
+
+            public Dictionary<string, string> ProviderIds { get; set; } = new Dictionary<string, string>();
+        }
+    }
+}