Add client-side Streamable HTTP transport support (#356)

tests/ModelContextProtocol.AspNetCore.Tests/MapMcpStreamableHttpTests.cs

@@ -0,0 +1,36 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace ModelContextProtocol.AspNetCore.Tests;
+
+public class MapMcpStreamableHttpTests(ITestOutputHelper outputHelper) : MapMcpTests(outputHelper)
+{
+    protected override bool UseStreamableHttp => true;
+
+    [Theory]
+    [InlineData("/a", "/a")]
+    [InlineData("/a", "/a/")]
+    [InlineData("/a/", "/a/")]
+    [InlineData("/a/", "/a")]
+    [InlineData("/a/b", "/a/b")]
+    public async Task CanConnect_WithMcpClient_AfterCustomizingRoute(string routePattern, string requestPath)
+    {
+        Builder.Services.AddMcpServer(options =>
+        {
+            options.ServerInfo = new()
+            {
+                Name = "TestCustomRouteServer",
+                Version = "1.0.0",
+            };
+        }).WithHttpTransport();
+        await using var app = Builder.Build();
+
+        app.MapMcp(routePattern);
+
+        await app.StartAsync(TestContext.Current.CancellationToken);
+
+        var mcpClient = await ConnectAsync(requestPath);
+
+        Assert.Equal("TestCustomRouteServer", mcpClient.ServerInfo.Name);
+    }
+}