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Implement SEP-2663 Tasks Extension (#1579)

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Pranav Senthilnathan 2026-06-11 13:10:45 -07:00 • committed by GitHub
commit dbb7a20176
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1 changed files with 8190 additions and 11405 deletions
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62
tests/ModelContextProtocol.Tests/ExperimentalPropertySerializationTests.cs
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@ -1,4 +1,5 @@
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Text.Json.Serialization;
using ModelContextProtocol.Protocol;
@ -10,13 +11,13 @@ namespace ModelContextProtocol.Tests;
/// </summary>
/// <remarks>
/// <para>
/// Experimental properties (e.g. <see cref="Tool.Execution"/>, <see cref="ServerCapabilities.Tasks"/>)
/// Experimental properties (e.g. <see cref="ServerCapabilities.Extensions"/>, <see cref="ClientCapabilities.Extensions"/>)
/// use an internal <c>*Core</c> property for serialization. A consumer's source-generated
/// <see cref="JsonSerializerContext"/> cannot see internal members, so experimental data is
/// silently dropped unless the consumer chains the SDK's resolver into their options.
/// </para>
/// <para>
/// These tests depend on <see cref="Tool.Execution"/> and <see cref="ServerCapabilities.Tasks"/>
/// These tests depend on <see cref="ServerCapabilities.Extensions"/> and <see cref="ClientCapabilities.Extensions"/>
/// being experimental. When those APIs stabilize, update these tests to reference whatever
/// experimental properties exist at that time, or remove them entirely if no experimental
/// APIs remain.
@ -32,36 +33,36 @@ public class ExperimentalPropertySerializationTests
TypeInfoResolverChain = { ConsumerJsonContext.Default }
};
var tool = new Tool
var capabilities = new ServerCapabilities
{
Name = "test-tool",
Execution = new ToolExecution { TaskSupport = ToolTaskSupport.Optional }
Tools = new ToolsCapability(),
Extensions = new Dictionary<string, object> { ["io.test"] = new JsonObject { ["enabled"] = true } }
};
string json = JsonSerializer.Serialize(tool, options);
Assert.DoesNotContain("\"execution\"", json);
Assert.Contains("\"name\"", json);
string json = JsonSerializer.Serialize(capabilities, options);
Assert.DoesNotContain("\"extensions\"", json);
Assert.Contains("\"tools\"", json);
}
[Fact]
public void ExperimentalProperties_IgnoredOnDeserialize_WithConsumerContextOnly()
{
string json = JsonSerializer.Serialize(
new Tool
new ServerCapabilities
{
Name = "test-tool",
Execution = new ToolExecution { TaskSupport = ToolTaskSupport.Optional }
Tools = new ToolsCapability(),
Extensions = new Dictionary<string, object> { ["io.test"] = new JsonObject { ["enabled"] = true } }
},
McpJsonUtilities.DefaultOptions);
Assert.Contains("\"execution\"", json);
Assert.Contains("\"extensions\"", json);
var options = new JsonSerializerOptions
{
TypeInfoResolverChain = { ConsumerJsonContext.Default }
};
var deserialized = JsonSerializer.Deserialize<Tool>(json, options)!;
Assert.Equal("test-tool", deserialized.Name);
Assert.Null(deserialized.Execution);
var deserialized = JsonSerializer.Deserialize<ServerCapabilities>(json, options)!;
Assert.NotNull(deserialized.Tools);
Assert.Null(deserialized.Extensions);
}
[Fact]
@ -76,35 +77,36 @@ public class ExperimentalPropertySerializationTests
}
};
var tool = new Tool
var capabilities = new ServerCapabilities
{
Name = "test-tool",
Execution = new ToolExecution { TaskSupport = ToolTaskSupport.Optional }
Tools = new ToolsCapability(),
Extensions = new Dictionary<string, object> { ["io.test"] = new JsonObject { ["enabled"] = true } }
};
string json = JsonSerializer.Serialize(tool, options);
Assert.Contains("\"execution\"", json);
Assert.Contains("\"name\"", json);
string json = JsonSerializer.Serialize(capabilities, options);
Assert.Contains("\"extensions\"", json);
Assert.Contains("\"tools\"", json);
var deserialized = JsonSerializer.Deserialize<Tool>(json, options)!;
Assert.Equal("test-tool", deserialized.Name);
Assert.NotNull(deserialized.Execution);
Assert.Equal(ToolTaskSupport.Optional, deserialized.Execution.TaskSupport);
var deserialized = JsonSerializer.Deserialize<ServerCapabilities>(json, options)!;
Assert.NotNull(deserialized.Tools);
Assert.NotNull(deserialized.Extensions);
Assert.True(deserialized.Extensions.ContainsKey("io.test"));
}
[Fact]
public void ExperimentalProperties_RoundTrip_WithDefaultOptions()
{
var capabilities = new ServerCapabilities
var capabilities = new ClientCapabilities
{
Tasks = new McpTasksCapability()
Extensions = new Dictionary<string, object> { ["io.test"] = new JsonObject { ["enabled"] = true } }
};
string json = JsonSerializer.Serialize(capabilities, McpJsonUtilities.DefaultOptions);
Assert.Contains("\"tasks\"", json);
Assert.Contains("\"extensions\"", json);
var deserialized = JsonSerializer.Deserialize<ServerCapabilities>(json, McpJsonUtilities.DefaultOptions)!;
Assert.NotNull(deserialized.Tasks);
var deserialized = JsonSerializer.Deserialize<ClientCapabilities>(json, McpJsonUtilities.DefaultOptions)!;
Assert.NotNull(deserialized.Extensions);
Assert.True(deserialized.Extensions.ContainsKey("io.test"));
}
}