Add serialization roundtrip tests for all Protocol namespace types (#1289)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-02-17 12:34:49 -08:00 · 2026-02-17 12:34:49 -08:00 · 4cef394ad5
commit 4cef394ad5
parent 392e47ea29
1 changed files with 3222 additions and 475 deletions
--- a/tests/ModelContextProtocol.Tests/Protocol/GetPromptResultTests.cs
+++ b/tests/ModelContextProtocol.Tests/Protocol/GetPromptResultTests.cs
@ -0,0 +1,60 @@
+using ModelContextProtocol.Protocol;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+
+namespace ModelContextProtocol.Tests.Protocol;
+
+public static class GetPromptResultTests
+{
+    [Fact]
+    public static void GetPromptResult_SerializationRoundTrip_PreservesAllProperties()
+    {
+        var original = new GetPromptResult
+        {
+            Description = "A code review prompt",
+            Messages =
+            [
+                new PromptMessage
+                {
+                    Role = Role.User,
+                    Content = new TextContentBlock { Text = "Review this code" }
+                },
+                new PromptMessage
+                {
+                    Role = Role.Assistant,
+                    Content = new TextContentBlock { Text = "I'll review it" }
+                }
+            ],
+            Meta = new JsonObject { ["key"] = "value" }
+        };
+
+        string json = JsonSerializer.Serialize(original, McpJsonUtilities.DefaultOptions);
+        var deserialized = JsonSerializer.Deserialize<GetPromptResult>(json, McpJsonUtilities.DefaultOptions);
+
+        Assert.NotNull(deserialized);
+        Assert.Equal("A code review prompt", deserialized.Description);
+        Assert.Equal(2, deserialized.Messages.Count);
+        Assert.Equal(Role.User, deserialized.Messages[0].Role);
+        var textBlock0 = Assert.IsType<TextContentBlock>(deserialized.Messages[0].Content);
+        Assert.Equal("Review this code", textBlock0.Text);
+        Assert.Equal(Role.Assistant, deserialized.Messages[1].Role);
+        var textBlock1 = Assert.IsType<TextContentBlock>(deserialized.Messages[1].Content);
+        Assert.Equal("I'll review it", textBlock1.Text);
+        Assert.NotNull(deserialized.Meta);
+        Assert.Equal("value", (string)deserialized.Meta["key"]!);
+    }
+
+    [Fact]
+    public static void GetPromptResult_SerializationRoundTrip_WithMinimalProperties()
+    {
+        var original = new GetPromptResult();
+
+        string json = JsonSerializer.Serialize(original, McpJsonUtilities.DefaultOptions);
+        var deserialized = JsonSerializer.Deserialize<GetPromptResult>(json, McpJsonUtilities.DefaultOptions);
+
+        Assert.NotNull(deserialized);
+        Assert.Null(deserialized.Description);
+        Assert.Empty(deserialized.Messages);
+        Assert.Null(deserialized.Meta);
+    }
+}