Testing Framework Comparison - Complete Guide

# Testing Frameworks

# 1. Jest Testing Framework
const sum = require('./sum');

describe('Sum function', () => {
  test('adds 1 + 2 to equal 3', () => {
    expect(sum(1, 2)).toBe(3);
  });
  
  test('adds 0 + 0 to equal 0', () => {
    expect(sum(0, 0)).toBe(0);
  });
  
  test('adds negative numbers', () => {
    expect(sum(-1, -2)).toBe(-3);
  });
});

// Jest configuration
module.exports = {
  testEnvironment: 'node',
  testMatch: ['**/__tests__/**/*.js', '**/?(*.)+(spec|test).js'],
  collectCoverage: true,
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html'],
  setupFilesAfterEnv: ['/jest.setup.js']
};

# 2. Mocha Testing Framework
const assert = require('assert');
const sum = require('./sum');

describe('Sum function', function() {
  it('should add 1 + 2 to equal 3', function() {
    assert.equal(sum(1, 2), 3);
  });
  
  it('should add 0 + 0 to equal 0', function() {
    assert.equal(sum(0, 0), 0);
  });
  
  it('should add negative numbers', function() {
    assert.equal(sum(-1, -2), -3);
  });
});

// Mocha configuration
module.exports = {
  timeout: 5000,
  reporter: 'spec',
  require: ['chai', 'sinon'],
  recursive: true,
  extension: ['js']
};

# 3. Jasmine Testing Framework
const sum = require('./sum');

describe('Sum function', function() {
  it('should add 1 + 2 to equal 3', function() {
    expect(sum(1, 2)).toBe(3);
  });
  
  it('should add 0 + 0 to equal 0', function() {
    expect(sum(0, 0)).toBe(0);
  });
  
  it('should add negative numbers', function() {
    expect(sum(-1, -2)).toBe(-3);
  });
});

// Jasmine configuration
module.exports = {
  spec_dir: 'spec',
  spec_files: ['**/*[sS]pec.js'],
  helpers: ['helpers/**/*.js'],
  stopOnSpecFailure: false,
  random: false
};

# 4. AVA Testing Framework
const test = require('ava');
const sum = require('./sum');

test('adds 1 + 2 to equal 3', t => {
  t.is(sum(1, 2), 3);
});

test('adds 0 + 0 to equal 0', t => {
  t.is(sum(0, 0), 0);
});

test('adds negative numbers', t => {
  t.is(sum(-1, -2), -3);
});

// AVA configuration
module.exports = {
  files: ['test/**/*.js'],
  concurrency: 4,
  failFast: true,
  tap: false,
  verbose: true
};

# 5. Tape Testing Framework
const test = require('tape');
const sum = require('./sum');

test('Sum function', function(t) {
  t.equal(sum(1, 2), 3, 'should add 1 + 2 to equal 3');
  t.equal(sum(0, 0), 0, 'should add 0 + 0 to equal 0');
  t.equal(sum(-1, -2), -3, 'should add negative numbers');
  t.end();
});

# 6. Vitest Testing Framework
import { describe, it, expect } from 'vitest';
import { sum } from './sum';

describe('Sum function', () => {
  it('should add 1 + 2 to equal 3', () => {
    expect(sum(1, 2)).toBe(3);
  });
  
  it('should add 0 + 0 to equal 0', () => {
    expect(sum(0, 0)).toBe(0);
  });
  
  it('should add negative numbers', () => {
    expect(sum(-1, -2)).toBe(-3);
  });
});

// Vitest configuration
export default {
  test: {
    environment: 'node',
    globals: true,
    coverage: {
      provider: 'v8',
      reporter: ['text', 'json', 'html']
    }
  }
};

# 7. Node.js Built-in Testing
import { test, describe, it, expect } from 'node:test';
import assert from 'node:assert';

describe('Sum function', () => {
  it('should add 1 + 2 to equal 3', () => {
    assert.strictEqual(sum(1, 2), 3);
  });
  
  it('should add 0 + 0 to equal 0', () => {
    assert.strictEqual(sum(0, 0), 0);
  });
  
  it('should add negative numbers', () => {
    assert.strictEqual(sum(-1, -2), -3);
  });
});

# 8. Playwright Testing Framework
const { test, expect } = require('@playwright/test');

test('API endpoint test', async ({ request }) => {
  const response = await request.get('/api/users');
  expect(response.status()).toBe(200);
  
  const data = await response.json();
  expect(data).toHaveProperty('users');
  expect(Array.isArray(data.users)).toBe(true);
});

# 9. Cypress Testing Framework
describe('API Tests', () => {
  it('should fetch users', () => {
    cy.request('GET', '/api/users')
      .should((response) => {
        expect(response.status).to.eq(200);
        expect(response.body).to.have.property('users');
        expect(response.body.users).to.be.an('array');
      });
  });
});

# 10. Supertest Testing Framework
const request = require('supertest');
const app = require('../app');

describe('GET /api/users', () => {
  it('should return users', async () => {
    const response = await request(app)
      .get('/api/users')
      .expect(200);
    
    expect(response.body).toHaveProperty('users');
    expect(Array.isArray(response.body.users)).toBe(true);
  });
});

# Performance Comparison

# 1. Jest Performance Test
const { performance } = require('perf_hooks');

describe('Jest Performance', () => {
  test('should run tests quickly', () => {
    const start = performance.now();
    
    // Test execution
    expect(1 + 1).toBe(2);
    
    const end = performance.now();
    const duration = end - start;
    
    expect(duration).toBeLessThan(100); // Less than 100ms
  });
});

# 2. Mocha Performance Test
const { performance } = require('perf_hooks');

describe('Mocha Performance', function() {
  it('should run tests quickly', function() {
    const start = performance.now();
    
    // Test execution
    assert.equal(1 + 1, 2);
    
    const end = performance.now();
    const duration = end - start;
    
    assert(duration < 100, 'Test should complete in less than 100ms');
  });
});

# 3. AVA Performance Test
const test = require('ava');
const { performance } = require('perf_hooks');

test('should run tests quickly', t => {
  const start = performance.now();
  
  // Test execution
  t.is(1 + 1, 2);
  
  const end = performance.now();
  const duration = end - start;
  
  t.true(duration < 100, 'Test should complete in less than 100ms');
});

# 4. Performance Benchmark Suite
class PerformanceBenchmark {
  constructor() {
    this.results = {};
  }
  
  async benchmark(framework, testSuite) {
    const start = performance.now();
    
    await testSuite();
    
    const end = performance.now();
    const duration = end - start;
    
    this.results[framework] = duration;
    
    return duration;
  }
  
  getResults() {
    return this.results;
  }
  
  getRanking() {
    const sorted = Object.entries(this.results)
      .sort(([,a], [,b]) => a - b);
    
    return sorted;
  }
}

const benchmark = new PerformanceBenchmark();

# 5. Memory Usage Comparison
class MemoryBenchmark {
  constructor() {
    this.results = {};
  }
  
  measureMemory(framework, testSuite) {
    const initialMemory = process.memoryUsage();
    
    testSuite();
    
    const finalMemory = process.memoryUsage();
    
    const memoryUsed = {
      rss: finalMemory.rss - initialMemory.rss,
      heapUsed: finalMemory.heapUsed - initialMemory.heapUsed,
      heapTotal: finalMemory.heapTotal - initialMemory.heapTotal,
      external: finalMemory.external - initialMemory.external
    };
    
    this.results[framework] = memoryUsed;
    
    return memoryUsed;
  }
  
  getResults() {
    return this.results;
  }
}

const memoryBenchmark = new MemoryBenchmark();

# 6. Test Execution Speed
class SpeedBenchmark {
  constructor() {
    this.results = {};
  }
  
  measureSpeed(framework, testCount) {
    const start = performance.now();
    
    for (let i = 0; i < testCount; i++) {
      // Simulate test execution
      this.simulateTest();
    }
    
    const end = performance.now();
    const duration = end - start;
    
    this.results[framework] = {
      duration,
      testsPerSecond: testCount / (duration / 1000)
    };
    
    return this.results[framework];
  }
  
  simulateTest() {
    // Simulate test execution
    const result = Math.random() > 0.5;
    if (!result) {
      throw new Error('Test failed');
    }
  }
  
  getResults() {
    return this.results;
  }
}

const speedBenchmark = new SpeedBenchmark();

# 7. Parallel Execution Test
class ParallelBenchmark {
  constructor() {
    this.results = {};
  }
  
  async measureParallel(framework, testSuite, concurrency = 4) {
    const start = performance.now();
    
    const promises = [];
    for (let i = 0; i < concurrency; i++) {
      promises.push(testSuite());
    }
    
    await Promise.all(promises);
    
    const end = performance.now();
    const duration = end - start;
    
    this.results[framework] = {
      duration,
      concurrency,
      efficiency: concurrency / duration
    };
    
    return this.results[framework];
  }
  
  getResults() {
    return this.results;
  }
}

const parallelBenchmark = new ParallelBenchmark();

# 8. Test Suite Size Impact
class SizeBenchmark {
  constructor() {
    this.results = {};
  }
  
  measureSizeImpact(framework, testSizes) {
    const results = {};
    
    for (const size of testSizes) {
      const start = performance.now();
      
      // Simulate test suite of given size
      this.simulateTestSuite(size);
      
      const end = performance.now();
      const duration = end - start;
      
      results[size] = duration;
    }
    
    this.results[framework] = results;
    
    return results;
  }
  
  simulateTestSuite(size) {
    for (let i = 0; i < size; i++) {
      this.simulateTest();
    }
  }
  
  simulateTest() {
    // Simulate test execution
    const result = Math.random() > 0.5;
    if (!result) {
      throw new Error('Test failed');
    }
  }
  
  getResults() {
    return this.results;
  }
}

const sizeBenchmark = new SizeBenchmark();

# 9. Framework Overhead Test
class OverheadBenchmark {
  constructor() {
    this.results = {};
  }
  
  measureOverhead(framework, testSuite) {
    const start = performance.now();
    
    // Measure framework overhead
    this.measureFrameworkOverhead(framework);
    
    // Measure test execution
    testSuite();
    
    const end = performance.now();
    const duration = end - start;
    
    this.results[framework] = duration;
    
    return duration;
  }
  
  measureFrameworkOverhead(framework) {
    // Simulate framework initialization overhead
    const overhead = {
      'jest': 50,
      'mocha': 30,
      'ava': 20,
      'tape': 10
    };
    
    return overhead[framework] || 0;
  }
  
  getResults() {
    return this.results;
  }
}

const overheadBenchmark = new OverheadBenchmark();

# 10. Comprehensive Benchmark
class ComprehensiveBenchmark {
  constructor() {
    this.performanceBenchmark = new PerformanceBenchmark();
    this.memoryBenchmark = new MemoryBenchmark();
    this.speedBenchmark = new SpeedBenchmark();
    this.parallelBenchmark = new ParallelBenchmark();
    this.sizeBenchmark = new SizeBenchmark();
    this.overheadBenchmark = new OverheadBenchmark();
  }
  
  async runAllBenchmarks(frameworks) {
    const results = {};
    
    for (const framework of frameworks) {
      results[framework] = {
        performance: await this.performanceBenchmark.benchmark(framework, () => {}),
        memory: this.memoryBenchmark.measureMemory(framework, () => {}),
        speed: this.speedBenchmark.measureSpeed(framework, 1000),
        parallel: await this.parallelBenchmark.measureParallel(framework, () => {}, 4),
        size: this.sizeBenchmark.measureSizeImpact(framework, [10, 100, 1000]),
        overhead: this.overheadBenchmark.measureOverhead(framework, () => {})
      };
    }
    
    return results;
  }
  
  generateReport(results) {
    const report = {
      timestamp: new Date().toISOString(),
      frameworks: Object.keys(results),
      summary: this.generateSummary(results),
      recommendations: this.generateRecommendations(results)
    };
    
    return report;
  }
  
  generateSummary(results) {
    const summary = {};
    
    for (const framework in results) {
      summary[framework] = {
        averagePerformance: this.calculateAverage(results[framework].performance),
        memoryEfficiency: this.calculateMemoryEfficiency(results[framework].memory),
        speedRating: this.calculateSpeedRating(results[framework].speed),
        parallelEfficiency: this.calculateParallelEfficiency(results[framework].parallel)
      };
    }
    
    return summary;
  }
  
  generateRecommendations(results) {
    const recommendations = [];
    
    // Find fastest framework
    const fastest = Object.entries(results)
      .sort(([,a], [,b]) => a.speed.testsPerSecond - b.speed.testsPerSecond)
      .pop();
    
    recommendations.push(`Fastest framework: ${fastest[0]} (${fastest[1].speed.testsPerSecond.toFixed(2)} tests/second)`);
    
    // Find most memory efficient
    const mostEfficient = Object.entries(results)
      .sort(([,a], [,b]) => a.memory.heapUsed - b.memory.heapUsed)
      .pop();
    
    recommendations.push(`Most memory efficient: ${mostEfficient[0]} (${mostEfficient[1].memory.heapUsed} bytes)`);
    
    return recommendations;
  }
  
  calculateAverage(values) {
    return values.reduce((sum, val) => sum + val, 0) / values.length;
  }
  
  calculateMemoryEfficiency(memory) {
    return memory.heapUsed / memory.heapTotal;
  }
  
  calculateSpeedRating(speed) {
    return speed.testsPerSecond;
  }
  
  calculateParallelEfficiency(parallel) {
    return parallel.efficiency;
  }
}

const comprehensiveBenchmark = new ComprehensiveBenchmark();