Working on BackgroundService for Seq Logging

Tests/MessageChannelIntegrationTests.cs

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+using Autofac;
+using System.Data;
+using Insight.Database;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Microsoft.Extensions.Logging;
+using Core.Telemetry;
+using Microsoft.ApplicationInsights;
+
+namespace Tests
+{
+    [TestClass]
+    public class MessageChannelIntegrationTests : TestFixture
+    {
+        private IMessageChannel _messageChannel;
+        private SeqBackgroundService _service;
+        private CancellationTokenSource _cts;
+
+        [TestInitialize]
+        public void SetupThis()
+        {
+            _messageChannel = new MessageChannel();
+            var telemetryClient = Container.Resolve<TelemetryClient>();
+            var httpClient = new HttpClient(new TestMessageHandler());
+            _service = new SeqBackgroundService(telemetryClient, _messageChannel, httpClient);
+            _cts = new CancellationTokenSource();
+        }
+
+        [TestMethod]
+        public async Task Messages_ShouldBeProcessedFromQueue()
+        {
+            // Arrange
+            var processedMessages = new List<HttpRequestMessage>();
+
+            // Start service
+            var serviceTask = _service.StartAsync(_cts.Token);
+
+            // Act
+            // Send nogle beskeder til køen
+            for (int i = 0; i < 5; i++)
+            {
+                var message = new HttpRequestMessage(HttpMethod.Post, $"http://test.com/{i}");
+                await _messageChannel.Writer.WriteAsync(message);
+            }
+
+            // Vent lidt for at sikre processing
+            await Task.Delay(5000);
+
+            // Stop servicen
+            _cts.Cancel();
+            await _service.StopAsync(CancellationToken.None);
+
+            // Assert
+            // Check at køen er tom
+            bool hasMoreMessages = await _messageChannel.Reader.WaitToReadAsync();
+            Assert.IsFalse(hasMoreMessages, "Køen burde være tom");
+        }
+
+        private class TestMessageHandler : HttpMessageHandler
+        {
+            protected override Task<HttpResponseMessage> SendAsync(
+                HttpRequestMessage request,
+                CancellationToken cancellationToken)
+            {
+                return Task.FromResult(new HttpResponseMessage(System.Net.HttpStatusCode.OK));
+            }
+        }
+
+        [TestCleanup]
+        public void Cleanup()
+        {
+            _cts?.Dispose();
+        }
+    }
+}