Default draft protocol support: sessionless + handshake-less (SEP-2575 + SEP-2567) (#1610)

2026-06-23 21:24:22 -07:00 · 2026-06-23 21:24:22 -07:00 · 6c323e783b
commit 6c323e783b
parent 3368bb7349
1 changed files with 5704 additions and 712 deletions
--- a/tests/ModelContextProtocol.Tests/Protocol/DiscoverProtocolTests.cs
+++ b/tests/ModelContextProtocol.Tests/Protocol/DiscoverProtocolTests.cs
@ -0,0 +1,80 @@
+using ModelContextProtocol.Protocol;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+
+namespace ModelContextProtocol.Tests.Protocol;
+
+/// <summary>
+/// Serialization tests for the request/result types introduced by the draft protocol revision (SEP-2575).
+/// </summary>
+public static class DiscoverProtocolTests
+{
+    [Fact]
+    public static void DiscoverRequestParams_SerializationRoundTrip_WithMeta()
+    {
+        var original = new DiscoverRequestParams
+        {
+            Meta = new JsonObject
+            {
+                [MetaKeys.ProtocolVersion] = "2026-07-28",
+                [MetaKeys.ClientInfo] = new JsonObject
+                {
+                    ["name"] = "test-client",
+                    ["version"] = "1.0",
+                },
+                [MetaKeys.ClientCapabilities] = new JsonObject(),
+            },
+        };
+
+        var json = JsonSerializer.Serialize(original, McpJsonUtilities.DefaultOptions);
+        var deserialized = JsonSerializer.Deserialize<DiscoverRequestParams>(json, McpJsonUtilities.DefaultOptions);
+
+        Assert.NotNull(deserialized);
+        Assert.NotNull(deserialized.Meta);
+        Assert.Equal("2026-07-28", (string)deserialized.Meta[MetaKeys.ProtocolVersion]!);
+    }
+
+    [Fact]
+    public static void DiscoverResult_SerializationRoundTrip_PreservesAllProperties()
+    {
+        var original = new DiscoverResult
+        {
+            SupportedVersions = new List<string> { "2025-11-25", "2026-07-28" },
+            Capabilities = new ServerCapabilities
+            {
+                Tools = new ToolsCapability { ListChanged = true },
+            },
+            ServerInfo = new Implementation { Name = "test-server", Version = "2.0" },
+            Instructions = "Use this server for testing.",
+        };
+
+        var json = JsonSerializer.Serialize(original, McpJsonUtilities.DefaultOptions);
+        var deserialized = JsonSerializer.Deserialize<DiscoverResult>(json, McpJsonUtilities.DefaultOptions);
+
+        Assert.NotNull(deserialized);
+        Assert.Equal(["2025-11-25", "2026-07-28"], deserialized.SupportedVersions);
+        Assert.NotNull(deserialized.Capabilities.Tools);
+        Assert.True(deserialized.Capabilities.Tools.ListChanged);
+        Assert.Equal("test-server", deserialized.ServerInfo.Name);
+        Assert.Equal("Use this server for testing.", deserialized.Instructions);
+    }
+
+    [Fact]
+    public static void DiscoverResult_SerializationRoundTrip_WithMinimalProperties()
+    {
+        var original = new DiscoverResult
+        {
+            SupportedVersions = new List<string> { "2026-07-28" },
+            Capabilities = new ServerCapabilities(),
+            ServerInfo = new Implementation { Name = "minimal-server", Version = "1.0" },
+        };
+
+        var json = JsonSerializer.Serialize(original, McpJsonUtilities.DefaultOptions);
+        var deserialized = JsonSerializer.Deserialize<DiscoverResult>(json, McpJsonUtilities.DefaultOptions);
+
+        Assert.NotNull(deserialized);
+        Assert.Single(deserialized.SupportedVersions);
+        Assert.Equal("2026-07-28", deserialized.SupportedVersions[0]);
+        Assert.Null(deserialized.Instructions);
+    }
+}