4a53f6f6d0* List tools from DI once - Follow best practice to not mutate options outside of IConfigureOptions - Long-term, we should move the repeated work from SetToolsHandler into an IPostConfigureOptions service or IMcpServerConnectionFactory * Add Can_Create_Multiple_Servers_From_Options_And_List_Registered_Tools * Flip stdin and stdout in StreamClientTransport * s/McpToolType/McpServerToolType * Clarify stdin and stdout refers to server process in StreamClientTransport * fixup
86 lines
No EOL
3.1 KiB
C#
86 lines
No EOL
3.1 KiB
C#
using Microsoft.Extensions.DependencyInjection;
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using ModelContextProtocol.Client;
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using ModelContextProtocol.Configuration;
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using ModelContextProtocol.Protocol.Transport;
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using ModelContextProtocol.Server;
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using ModelContextProtocol.Tests.Transport;
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using System.IO.Pipelines;
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namespace ModelContextProtocol.Tests.Client;
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public class McpClientExtensionsTests
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{
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private Pipe _clientToServerPipe = new();
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private Pipe _serverToClientPipe = new();
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private readonly IMcpServer _server;
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public McpClientExtensionsTests()
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{
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ServiceCollection sc = new();
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sc.AddSingleton<IServerTransport>(new StdioServerTransport("TestServer", _clientToServerPipe.Reader.AsStream(), _serverToClientPipe.Writer.AsStream()));
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sc.AddMcpServer();
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for (int f = 0; f < 10; f++)
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{
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string name = $"Method{f}";
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sc.AddSingleton(McpServerTool.Create((int i) => $"{name} Result {i}", name));
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}
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_server = sc.BuildServiceProvider().GetRequiredService<IMcpServer>();
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}
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public ValueTask DisposeAsync()
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{
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_clientToServerPipe.Writer.Complete();
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_serverToClientPipe.Writer.Complete();
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return _server.DisposeAsync();
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}
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private async Task<IMcpClient> CreateMcpClientForServer()
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{
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await _server.StartAsync(TestContext.Current.CancellationToken);
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var serverStdinWriter = new StreamWriter(_clientToServerPipe.Writer.AsStream());
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var serverStdoutReader = new StreamReader(_serverToClientPipe.Reader.AsStream());
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var serverConfig = new McpServerConfig()
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{
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Id = "TestServer",
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Name = "TestServer",
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TransportType = "ignored",
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};
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return await McpClientFactory.CreateAsync(
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serverConfig,
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createTransportFunc: (_, _) => new StreamClientTransport(serverStdinWriter, serverStdoutReader),
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cancellationToken: TestContext.Current.CancellationToken);
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}
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[Fact]
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public async Task ListToolsAsync_AllToolsReturned()
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{
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IMcpClient client = await CreateMcpClientForServer();
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var tools = await client.ListToolsAsync(TestContext.Current.CancellationToken);
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Assert.Equal(10, tools.Count);
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var echo = tools.Single(t => t.Name == "Method4");
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var result = await echo.InvokeAsync(new Dictionary<string, object?>() { ["i"] = 42 }, TestContext.Current.CancellationToken);
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Assert.Contains("Method4 Result 42", result?.ToString());
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}
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[Fact]
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public async Task EnumerateToolsAsync_AllToolsReturned()
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{
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IMcpClient client = await CreateMcpClientForServer();
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await foreach (var tool in client.EnumerateToolsAsync(TestContext.Current.CancellationToken))
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{
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if (tool.Name == "Method4")
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{
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var result = await tool.InvokeAsync(new Dictionary<string, object?>() { ["i"] = 42 }, TestContext.Current.CancellationToken);
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Assert.Contains("Method4 Result 42", result?.ToString());
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return;
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}
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}
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Assert.Fail("Couldn't find target method");
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}
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} |