# Update/Fix build workflow
- `macos-latest-xlarge` is no longer available. Switch to cheaper
runner: `macos-latest-xlarge` -> `macos-latest`
- Refactor build to run matrix job under Linux and macOS
- Tune caching GH caching
- Add junit and logger properties
- Downgrade Junit to 5.14.2
- Extract `ProcessBuilder` creation logic into helper functions
- Disable `StdioClientTransportTest` on windows temporary
## How Has This Been Tested?
CI
## Breaking Changes
Functionally - no. Outdated/broken TypeScript tests were disabled
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [x] Bug fix (non-breaking change which fixes an issue)
- [x] CI Update
## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [ ] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [ ] My code follows the repository's style guidelines
- [ ] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed
## Additional context
GitHub actions workflows were blocked because the selected
"macos-latest-xlarge" runner, which is not available for the free
open-source plan. With "macos-latest" workflow works.
<!-- Provide a brief summary of your changes -->
## Motivation and Context
1. The currently failing checks are commented out in `ConformanceTest`,
see the TODOs.
2. I added detailed logging for Gradle task, Server, and Client to allow
easier output reading when viewing tests results outside of IDE.
3. As a future improvement, instead of hard-coding scenarios, we can get
them with `npx @modelcontextprotocol/conformance list` and run all of
them.
4. The conformance framework writes its result into
`kotlin-sdk-test/results` directory and contains JSONs like the one
below:
```json
[
{
"id": "mcp-client-initialization",
"name": "MCPClientInitialization",
"description": "Validates that MCP client properly initializes with server",
"status": "SUCCESS",
"timestamp": "2025-11-28T14:38:36.718Z",
"specReferences": [
{
"id": "MCP-Lifecycle",
"url": "https://modelcontextprotocol.io/specification/2025-06-18/basic/lifecycle"
}
],
"details": {
"protocolVersionSent": "2025-06-18",
"expectedSpecVersion": "2025-06-18",
"versionMatch": true,
"clientName": "kotlin-conformance-client",
"clientVersion": "1.0.0"
}
},
{
"id": "server-info",
"name": "ServerInfo",
"description": "Test server info returned to client",
"status": "INFO",
"timestamp": "2025-11-28T14:38:36.718Z",
"specReferences": [
{
"id": "MCP-Lifecycle",
"url": "https://modelcontextprotocol.io/specification/2025-06-18/basic/lifecycle"
}
],
"details": {
"serverName": "test-server",
"serverVersion": "1.0.0"
}
}
]
```
As another future improvement, we can do somethig with these JSON files,
like putting them into a job summary on GitHub.
5. The client test also generated stderr.txt file in
`kotlin-sdk-test/results/initialize-.......` which contains errors
because it tries to call a tool. I haven't investigated if it's just the
way I wrote the client or related to `StreamableHttpClientTransport`.
6. The server is the simplified version of the existing server for
Kotlin<--->Typescript tests. If conformance tests extend significantly,
we can either combine the server implementations or ditch the
integration tests.
## How Has This Been Tested?
<!-- Have you tested this in a real application? Which scenarios were
tested? -->
## Breaking Changes
<!-- Will users need to update their code or configurations? -->
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] 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)
- [ ] 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
- [ ] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed
## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->
---------
Co-authored-by: Konstantin Pavlov <1517853+kpavlov@users.noreply.github.com>
Konstantin Pavlov
dependabot[bot]
Sergey Karpov