Python Testing Tools MCP Server

Created By

jazzberry-ai4 months ago

An advanced Model Context Protocol (MCP) server that provides AI-powered Python testing tools. This project leverages both Google's Gemini AI and BAML (Boundary ML) to intelligently generate comprehensive unit tests and perform sophisticated fuzz testing on Python code.

# Jazzberry

# Software Testing

Overview Content Tools Comments

Overview

Python Testing Tools MCP Server

Overview

This MCP server offers automated testing capabilities through three main tools:

Intelligent Unit Test Generation - Automatically creates comprehensive test suites with proper edge cases, assertions, and error handling
AI-Powered Fuzz Testing - Generates diverse, challenging inputs to test function robustness and discover potential crashes
Advanced Coverage Testing - Generates comprehensive test suites designed to achieve maximum code coverage with intelligent branch, loop, and exception path analysis

The server uses a hybrid AI approach: BAML for structured test generation and Gemini for intelligent input generation, ensuring high-quality, reliable test outputs.

Key Features

AI-Powered Unit Test Generation: Uses BAML with Gemini to generate comprehensive unittest suites covering normal cases, edge cases, and error conditions
Intelligent Fuzz Testing: Leverages AI to generate diverse, challenging inputs that test function boundaries and error handling
Advanced Coverage Testing: AST-based code analysis with AI-generated tests targeting specific coverage scenarios for maximum line and branch coverage
Built-in Coverage Measurement: Integrates coverage.py library for real-time coverage reporting and analysis
BAML Integration: Structured AI responses using BAML (Boundary ML) for consistent, parseable test generation
FastMCP Framework: Built on FastMCP for efficient MCP server implementation
Robust Error Handling: Graceful fallbacks and detailed error reporting throughout the testing pipeline
Modular Architecture: Clean separation between tools, utilities, and AI clients for easy extension
Advanced Code Analysis: Uses Python AST parsing for accurate function extraction, branch detection, and control flow analysis

Server Config

{
  "/path/to/your/project": {
    "mcpServers": {
      "python_testing_tools": {
        "type": "stdio",
        "command": "uv",
        "args": [
          "run",
          "--with",
          "fastmcp",
          "fastmcp",
          "run",
          "/path/to/your/project/python_testing_mcp_server.py"
        ],
        "env": {
          "GEMINI_API_KEY": "your-api-key-here"
        }
      }
    }
  }
}

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