Add tests for connecting to Microsoft Learn MCP server via streamable HTTP

Co-authored-by: stephentoub <[email protected]>

Author: Copilot

tests/ModelContextProtocol.Tests/MicrosoftLearnServerTests.cs

@@ -0,0 +1,96 @@
+using ModelContextProtocol.Client;
+using ModelContextProtocol.Tests.Utils;
+
+namespace ModelContextProtocol.Tests;
+
+/// <summary>
+/// Tests for connecting to the Microsoft Learn MCP server.
+/// These tests connect to a real external server and are marked as manual execution.
+/// </summary>
+public class MicrosoftLearnServerTests(ITestOutputHelper testOutputHelper) : LoggedTest(testOutputHelper)
+{
+    /// <summary>
+    /// Tests connecting to the Microsoft Learn MCP server via streamable HTTP.
+    /// This test requires internet connectivity and access to learn.microsoft.com.
+    /// </summary>
+    [Fact]
+    [Trait("Execution", "Manual")]
+    public async Task CanConnectToMicrosoftLearnServerViaStreamableHttp()
+    {
+        // Arrange
+        var transportOptions = new HttpClientTransportOptions
+        {
+            Endpoint = new Uri("https://learn.microsoft.com/api/mcp"),
+            TransportMode = HttpTransportMode.StreamableHttp,
+            Name = "Microsoft Learn MCP Server",
+        };
+
+        // Act
+        await using var transport = new HttpClientTransport(transportOptions, LoggerFactory);
+        await using var client = await McpClient.CreateAsync(
+            transport,
+            loggerFactory: LoggerFactory,
+            cancellationToken: TestContext.Current.CancellationToken);
+
+        // Assert - verify we can list tools from the server
+        var tools = await client.ListToolsAsync(cancellationToken: TestContext.Current.CancellationToken);
+        Assert.NotNull(tools);
+        
+        // The server should expose some tools - we don't assert specific tools as they may change
+        TestOutputHelper.WriteLine($"Connected to Microsoft Learn MCP server successfully.");
+        TestOutputHelper.WriteLine($"Server: {client.ServerInfo.Name} v{client.ServerInfo.Version}");
+        TestOutputHelper.WriteLine($"Protocol version: {client.NegotiatedProtocolVersion}");
+        TestOutputHelper.WriteLine($"Number of tools available: {tools.Count}");
+        
+        if (tools.Count > 0)
+        {
+            TestOutputHelper.WriteLine("\nAvailable tools:");
+            foreach (var tool in tools)
+            {
+                TestOutputHelper.WriteLine($"  - {tool.Name}: {tool.Description}");
+            }
+        }
+    }
+
+    /// <summary>
+    /// Tests connecting to the Microsoft Learn MCP server and verifying server capabilities.
+    /// This test requires internet connectivity and access to learn.microsoft.com.
+    /// </summary>
+    [Fact]
+    [Trait("Execution", "Manual")]
+    public async Task MicrosoftLearnServer_HasExpectedCapabilities()
+    {
+        // Arrange
+        var transportOptions = new HttpClientTransportOptions
+        {
+            Endpoint = new Uri("https://learn.microsoft.com/api/mcp"),
+            TransportMode = HttpTransportMode.StreamableHttp,
+            Name = "Microsoft Learn MCP Server",
+        };
+
+        // Act
+        await using var transport = new HttpClientTransport(transportOptions, LoggerFactory);
+        await using var client = await McpClient.CreateAsync(
+            transport,
+            loggerFactory: LoggerFactory,
+            cancellationToken: TestContext.Current.CancellationToken);
+
+        // Assert - verify basic server info
+        Assert.NotNull(client.ServerInfo);
+        Assert.False(string.IsNullOrEmpty(client.ServerInfo.Name), "Server should have a name");
+        Assert.False(string.IsNullOrEmpty(client.NegotiatedProtocolVersion), "Should have negotiated a protocol version");
+
+        // Log server capabilities
+        TestOutputHelper.WriteLine($"Server: {client.ServerInfo.Name}");
+        if (!string.IsNullOrEmpty(client.ServerInfo.Version))
+        {
+            TestOutputHelper.WriteLine($"Version: {client.ServerInfo.Version}");
+        }
+        TestOutputHelper.WriteLine($"Protocol: {client.NegotiatedProtocolVersion}");
+        
+        TestOutputHelper.WriteLine("\nCapabilities:");
+        TestOutputHelper.WriteLine($"  - Tools: {client.ServerCapabilities.Tools is not null}");
+        TestOutputHelper.WriteLine($"  - Prompts: {client.ServerCapabilities.Prompts is not null}");
+        TestOutputHelper.WriteLine($"  - Resources: {client.ServerCapabilities.Resources is not null}");
+    }
+}