Add code to test authenticated endpoints

tests/Jellyfin.Server.Integration.Tests/Controllers/ActivityLogControllerTests.cs

@@ -0,0 +1,30 @@
+using System.Net;
+using System.Net.Mime;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Jellyfin.Server.Integration.Tests.Controllers
+{
+    public sealed class ActivityLogControllerTests : IClassFixture<JellyfinApplicationFactory>
+    {
+        private readonly JellyfinApplicationFactory _factory;
+        private string? _accessToken;
+
+        public ActivityLogControllerTests(JellyfinApplicationFactory factory)
+        {
+            _factory = factory;
+        }
+
+        [Fact]
+        public async Task ActivityLog_GetEntries_Ok()
+        {
+            var client = _factory.CreateClient();
+            client.DefaultRequestHeaders.AddAuthHeader(_accessToken ??= await AuthHelper.CompleteStartupAsync(client).ConfigureAwait(false));
+
+            var response = await client.GetAsync("System/ActivityLog/Entries").ConfigureAwait(false);
+
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            Assert.Equal(MediaTypeNames.Application.Json, response.Content.Headers.ContentType?.MediaType);
+        }
+    }
+}