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Fix _meta properties to use JsonObject (#1341)

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
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Copilot 2026-02-21 07:54:06 -05:00 • committed by GitHub
commit d429b0bf64
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2 changed files with 5 additions and 4 deletions
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4
src/ModelContextProtocol.Core/Protocol/Root.cs
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@ -1,5 +1,5 @@
using System.Diagnostics.CodeAnalysis; using System.Diagnostics.CodeAnalysis;
using System.Text.Json; using System.Text.Json.Nodes;
using System.Text.Json.Serialization; using System.Text.Json.Serialization;
namespace ModelContextProtocol.Protocol; namespace ModelContextProtocol.Protocol;
@ -35,5 +35,5 @@ public sealed class Root
/// This is reserved by the protocol for future use. /// This is reserved by the protocol for future use.
/// </remarks> /// </remarks>
[JsonPropertyName("_meta")] [JsonPropertyName("_meta")]
public JsonElement? Meta { get; set; } public JsonObject? Meta { get; set; }
} }

5
tests/ModelContextProtocol.Tests/Protocol/RootTests.cs
View file

@ -1,5 +1,6 @@
using ModelContextProtocol.Protocol; using ModelContextProtocol.Protocol;
using System.Text.Json; using System.Text.Json;
using System.Text.Json.Nodes;
namespace ModelContextProtocol.Tests.Protocol; namespace ModelContextProtocol.Tests.Protocol;
@ -12,7 +13,7 @@ public static class RootTests
{ {
Uri = "file:///home/user/project", Uri = "file:///home/user/project",
Name = "My Project", Name = "My Project",
Meta = JsonDocument.Parse("""{"custom":"data"}""").RootElement.Clone() Meta = new JsonObject { ["custom"] = "data" }
}; };
string json = JsonSerializer.Serialize(original, McpJsonUtilities.DefaultOptions); string json = JsonSerializer.Serialize(original, McpJsonUtilities.DefaultOptions);
@ -22,7 +23,7 @@ public static class RootTests
Assert.Equal("file:///home/user/project", deserialized.Uri); Assert.Equal("file:///home/user/project", deserialized.Uri);
Assert.Equal("My Project", deserialized.Name); Assert.Equal("My Project", deserialized.Name);
Assert.NotNull(deserialized.Meta); Assert.NotNull(deserialized.Meta);
Assert.Equal("data", deserialized.Meta.Value.GetProperty("custom").GetString()); Assert.Equal("data", (string?)deserialized.Meta["custom"]);
} }
[Fact] [Fact]