Added test for ListsingsManager.DeleteListingsProvider(). (#12793)

* Added test for DeleteListingsProvider().

* Added myself to CONTRIBUTORS.md

* Removed unintentionally committed test SaveListingProvider_SavesProviderAndReturnsInfo()

* Cleaned up test in response to PR feedback.

CONTRIBUTORS.md

@@ -192,6 +192,7 @@
  - [jaina heartles](https://github.com/heartles)
  - [oxixes](https://github.com/oxixes)
  - [elfalem](https://github.com/elfalem)
+ - [Kenneth Cochran](https://github.com/kennethcochran)
  - [benedikt257](https://github.com/benedikt257)
  - [revam](https://github.com/revam)
 

tests/Jellyfin.LiveTv.Tests/Listings/ListingsManagerTests.cs

@@ -0,0 +1,50 @@
+using System;
+using Jellyfin.LiveTv.Configuration;
+using Jellyfin.LiveTv.Listings;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.LiveTv;
+using MediaBrowser.Model.LiveTv;
+using MediaBrowser.Model.Tasks;
+using Microsoft.Extensions.Logging;
+using Moq;
+using Xunit;
+
+namespace Jellyfin.LiveTv.Tests.Listings;
+
+public class ListingsManagerTests
+{
+    private readonly IConfigurationManager _config;
+    private readonly IListingsProvider[] _listingsProviders;
+    private readonly ILogger<ListingsManager> _logger;
+    private readonly ITaskManager _taskManager;
+    private readonly ITunerHostManager _tunerHostManager;
+
+    public ListingsManagerTests()
+    {
+        _logger = Mock.Of<ILogger<ListingsManager>>();
+        _config = Mock.Of<IConfigurationManager>();
+        _taskManager = Mock.Of<ITaskManager>();
+        _tunerHostManager = Mock.Of<ITunerHostManager>();
+        _listingsProviders = new[] { Mock.Of<IListingsProvider>() };
+    }
+
+    [Fact]
+    public void DeleteListingsProvider_DeletesProvider()
+    {
+        // Arrange
+        var id = "MockId";
+        var manager = new ListingsManager(_logger, _config, _taskManager, _tunerHostManager, _listingsProviders);
+
+        Mock.Get(_config)
+            .Setup(x => x.GetConfiguration(It.IsAny<string>()))
+            .Returns(new LiveTvOptions { ListingProviders = [new ListingsProviderInfo { Id = id }] });
+
+        // Act
+        manager.DeleteListingsProvider(id);
+
+        // Assert
+        Assert.DoesNotContain(
+            _config.GetLiveTvConfiguration().ListingProviders,
+            p => p.Id.Equals(id, StringComparison.Ordinal));
+    }
+}