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Test Analyzer MCP Server
A Model Context Protocol (MCP) server that provides tools for analyzing unit test setups, checking coverage, and generating comprehensive test reports for JavaScript/TypeScript projects.
Features
🔍 Framework Detection: Automatically detects Jest, Vitest, Mocha, Cypress, and Playwright
📊 Coverage Analysis: Detailed coverage metrics with visual feedback
📁 Test Discovery: Finds and analyzes all test files in your project
🎯 Smart Recommendations: Actionable insights to improve your testing strategy
🚀 Frontend Focused: Optimized for React, Vue, Angular, and other frontend frameworks
Installation
The server is already configured in your MCP settings at:
Available Tools
1. analyze_test_setup
Analyzes the complete unit test setup of a repository.
Parameters:
repoPath
(required): Path to the repository to analyze
Returns:
Framework name (jest, vitest, mocha, etc.)
List of test files found
Total test count
Test structure (suites, tests, hooks)
Coverage configuration
Testing dependencies
Summary report
2. check_coverage
Checks test coverage for a repository with detailed metrics.
Parameters:
repoPath
(required): Path to the repositoryrunTests
(optional, default: false): Whether to run tests to generate fresh coverage data
Returns:
Line coverage percentage
Statement coverage percentage
Function coverage percentage
Branch coverage percentage
Visual status indicators (✅ Good, ⚠️ Fair, ❌ Poor)
Overall coverage summary
3. get_test_summary
Generates a comprehensive test analysis report.
Parameters:
repoPath
(required): Path to the repository
Returns:
Complete test setup overview
Coverage metrics with visual feedback
Categorized dependencies
Actionable recommendations
Markdown-formatted report
Sample Queries
Here are example queries you can use with Claude when this MCP server is active:
Basic Analysis
Coverage Analysis
Comprehensive Reports
Specific Inquiries
Supported Test Frameworks
Unit Testing
Jest - Detected via jest.config.js, package.json
Vitest - Detected via vitest.config.js, vite.config.js
Mocha - Detected via .mocharc.js, .mocharc.json
E2E Testing
Cypress - Detected via cypress.config.js, cypress.json
Playwright - Detected via playwright.config.js
Supported Coverage Tools
Jest Coverage (built-in)
NYC/Istanbul (.nycrc, .nycrc.json)
C8 (V8 coverage)
Vitest Coverage (@vitest/coverage-c8, @vitest/coverage-istanbul)
Test File Patterns
The server automatically detects test files matching these patterns:
**/*.test.{js,jsx,ts,tsx}
**/*.spec.{js,jsx,ts,tsx}
**/__tests__/**/*.{js,jsx,ts,tsx}
test/**/*.{js,jsx,ts,tsx}
(Mocha)cypress/integration/**/*
(Cypress)cypress/e2e/**/*
(Cypress)**/*.cy.{js,jsx,ts,tsx}
(Cypress component tests)tests/**/*.{js,jsx,ts,tsx}
(Playwright)e2e/**/*.{js,jsx,ts,tsx}
(E2E tests)
Coverage Thresholds
The server evaluates coverage based on these thresholds:
✅ Good: ≥ 80% coverage
⚠️ Fair: ≥ 60% coverage
❌ Poor: < 60% coverage
Example Output
Test Setup Analysis
Coverage Report
Recommendations
Advanced Usage
Analyzing Multiple Projects
You can analyze multiple projects in sequence:
CI/CD Integration Ideas
Test Improvement Workflow
Troubleshooting
No Framework Detected
Ensure package.json exists in the repository
Check if test framework is in devDependencies
Verify configuration files are present
No Coverage Data Found
Run tests with
runTests: true
parameterEnsure coverage is configured in test framework
Check if coverage directory exists after running tests
No Test Files Found
Verify test files follow common naming patterns
Check if tests are in excluded directories (node_modules, dist, build)
Ensure file extensions match (.test.js, .spec.ts, etc.)
Development
Adding New Frameworks
To support additional test frameworks, update the frameworks
array in the server implementation with:
Framework name
Configuration file patterns
Test file patterns
Extending Coverage Support
The server can be extended to support additional coverage formats by:
Adding new file patterns to
coverageFiles
arrayImplementing parsers for specific coverage formats
Supporting additional coverage reporters
License
ISC
Author
Giri - https://github.com/giri-jeedigunta/
Cline MCP screenshots
local-only server
The server can only run on the client's local machine because it depends on local resources.
Enables comprehensive analysis of JavaScript/TypeScript project testing setups by detecting frameworks like Jest, Vitest, and Cypress, analyzing test coverage metrics, and generating actionable recommendations for improving test quality. Provides detailed insights into test structure, dependencies, and coverage thresholds with visual feedback.
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