HttpListener based SSE Server Support (#73)

tests/mcpdotnet.Tests/SseServerIntegrationTestFixture.cs

@@ -0,0 +1,83 @@
+using McpDotNet.Client;
+using McpDotNet.Configuration;
+using McpDotNet.Protocol.Transport;
+using Microsoft.Extensions.Logging;
+using System.Diagnostics;
+
+namespace McpDotNet.Tests;
+
+public class SseServerIntegrationTestFixture : IDisposable
+{
+    private Process _process;
+
+    public ILoggerFactory LoggerFactory { get; }
+    public McpClientFactory Factory { get; }
+    public McpClientOptions DefaultOptions { get; }
+    public McpServerConfig DefaultConfig { get; }
+
+    public SseServerIntegrationTestFixture()
+    {
+        LoggerFactory = Microsoft.Extensions.Logging.LoggerFactory.Create(builder =>
+            builder.AddConsole()
+            .SetMinimumLevel(LogLevel.Debug));
+
+        DefaultOptions = new()
+        {
+            ClientInfo = new() { Name = "IntegrationTestClient", Version = "1.0.0" },
+            Capabilities = new() { Sampling = new(), Roots = new() }
+        };
+
+        DefaultConfig = new McpServerConfig
+        {
+            Id = "test_server",
+            Name = "TestServer",
+            TransportType = TransportTypes.Sse,
+            TransportOptions = [],
+            Location = "http://localhost:3001/sse"
+        };
+
+        // Inject the mock transport into the factory
+        Factory = new McpClientFactory(
+            [DefaultConfig],
+            DefaultOptions,
+            LoggerFactory
+        );
+
+        Start();
+    }
+
+    public void Start()
+    {
+        // Start the server (which is at TestSseServer.exe on windows and "dotnet TestSseServer.dll" on linux)
+        var processStartInfo = new ProcessStartInfo
+        {
+            FileName = OperatingSystem.IsWindows() ? "TestSseServer.exe" : "dotnet",
+            Arguments = "TestSseServer.dll",
+            RedirectStandardInput = true,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false,
+        };
+
+        _process = Process.Start(processStartInfo)
+            ?? throw new InvalidOperationException($"Could not start process for {processStartInfo.FileName} with '{processStartInfo.Arguments}'.");
+
+        // Wait 1 second
+        Thread.Sleep(1000);
+    }
+
+    public void Dispose()
+    {
+        try
+        {
+            var client = Factory.GetClientAsync("test_server").Result;
+            client.DisposeAsync().AsTask().Wait();
+            LoggerFactory?.Dispose();
+        }
+        finally
+        {
+            // Kill the server process
+            _process.Kill();
+        }
+    }
+}