feat(mcptest): extend test server with prompt and resource support

[vasayxtx]

Description

This PR enhances the mcptest.Server by adding comprehensive support for prompts and resources alongside the existing tools functionality.

Type of Change

• [ ] Bug fix (non-breaking change that fixes an issue)
• [x] New feature (non-breaking change that adds functionality)
• [ ] MCP spec compatibility implementation
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update
• [x] Code refactoring (no functional changes)
• [ ] Performance improvement
• [ ] Tests only (no functional changes)
• [ ] Other (please describe):

Checklist

• [x] My code follows the code style of this project
• [x] I have performed a self-review of my own code
• [x] I have added tests that prove my fix is effective or that my feature works
• [ ] I have updated the documentation accordingly

Summary by CodeRabbit

• New Features

  • Added support for registering prompts and resources on the server, enabling interaction with custom prompts and access to resources.

• Bug Fixes

  • Enhanced initialization logic for server capabilities related to resources and prompts to ensure thread-safe setup.

• Tests

  • Added tests validating server behavior with prompts and resources, confirming accurate handling and responses.

[coderabbitai[bot]]

"""

Walkthrough

The changes introduce support for registering prompts and resources in both the MCP server and its test server. New methods and struct types are added to manage prompts and resources, including batch registration. Tests are updated and expanded to verify the new prompt and resource handling capabilities in the test server.

Changes

Files / Areas	Change Summary
mcptest/mcptest.go	Added prompt/resource slices to Server struct; added methods for adding prompts/resources; integrated into server startup.
mcptest/mcptest_test.go	Renamed existing test; added new tests for prompt and resource registration and retrieval.
server/server.go	Introduced ServerPrompt/ServerResource structs; added batch and single add methods; centralized capability registration with lazy init.

Possibly related PRs

• mark3labs/mcp-go#149: Establishes the original mcptest package and Server struct, which this PR extends with prompt and resource support.
• mark3labs/mcp-go#320: Adds a method for prompt deletion in MCPServer; both PRs modify prompt management within the server.

Suggested reviewers

• ezynda3
• robert-jackson-glean """

[!WARNING] There were issues while running some tools. Please review the errors and either fix the tool's configuration or disable the tool if it's a critical failure.

🔧 golangci-lint (1.64.8)

Error: you are using a configuration file for golangci-lint v2 with golangci-lint v1: please use golangci-lint v2 Failed executing command with error: you are using a configuration file for golangci-lint v2 with golangci-lint v1: please use golangci-lint v2

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📜 Recent review details

Configuration used: CodeRabbit UI Review profile: CHILL Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between de0304af04fd501af9644f7b8492cab1635e4f88 and d36a6f51e23c1929e3dc98784894592bd3b6763c.

📒 Files selected for processing (3)

• mcptest/mcptest.go (3 hunks)
• mcptest/mcptest_test.go (2 hunks)
• server/server.go (7 hunks)

🚧 Files skipped from review as they are similar to previous changes (3)

• mcptest/mcptest_test.go
• mcptest/mcptest.go
• server/server.go

✨ Finishing Touches

• [ ] 📝 Generate Docstrings

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[vasayxtx]

@pottekkat coderabbit's comments are processed. Could you pls check the PR again? Thanks!