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feat: Add kotlin-sdk-testing module with channel-based transport implementation (#505)

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# feat: Add kotlin-sdk-testing module with channel-based transport
implementation

- Introduced `kotlin-sdk-testing` module for testing utilities in the
MCP Kotlin SDK.
- Implemented `ChannelTransport`, providing JSON-RPC transport via
Kotlin coroutines channels.

<!-- Provide a brief summary of your changes -->

## Motivation and Context
This ChannelTransport can be used for testing Server implementation
without using real transports.

## How Has This Been Tested?
Unit test

## Breaking Changes
No

## Types of changes

- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [x] Documentation update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
This commit is contained in:
Konstantin Pavlov 2026-02-16 14:10:56 +02:00 • committed by GitHub
commit 212cbfa325
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1 changed files with 669 additions and 3 deletions
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public final class io/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport : io/modelcontextprotocol/kotlin/sdk/shared/AbstractClientTransport {
public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$Companion;
public fun <init> (Lkotlinx/coroutines/channels/Channel;Lkotlinx/coroutines/CoroutineDispatcher;)V
public synthetic fun <init> (Lkotlinx/coroutines/channels/Channel;Lkotlinx/coroutines/CoroutineDispatcher;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
public fun <init> (Lkotlinx/coroutines/channels/SendChannel;Lkotlinx/coroutines/channels/ReceiveChannel;Lkotlinx/coroutines/CoroutineDispatcher;)V
public synthetic fun <init> (Lkotlinx/coroutines/channels/SendChannel;Lkotlinx/coroutines/channels/ReceiveChannel;Lkotlinx/coroutines/CoroutineDispatcher;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
}
public final class io/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$Companion {
public final fun createLinkedPair (ILkotlinx/coroutines/CoroutineDispatcher;)Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$LinkedTransports;
public static synthetic fun createLinkedPair$default (Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$Companion;ILkotlinx/coroutines/CoroutineDispatcher;ILjava/lang/Object;)Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$LinkedTransports;
}
public final class io/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$LinkedTransports {
public fun <init> (Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;)V
public final fun component1 ()Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;
public final fun component2 ()Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;
public final fun copy (Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;)Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$LinkedTransports;
public static synthetic fun copy$default (Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$LinkedTransports;Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;ILjava/lang/Object;)Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport$LinkedTransports;
public fun equals (Ljava/lang/Object;)Z
public final fun getClientTransport ()Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;
public final fun getServerTransport ()Lio/modelcontextprotocol/kotlin/sdk/testing/ChannelTransport;
public fun hashCode ()I
public fun toString ()Ljava/lang/String;
}