macau-law-kb/jest.config.js at master · WindoC/macau-law-kb · GitHub

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/**
 * Jest Configuration for Macau Law Knowledge Base
 * Configures testing environment for TypeScript, React, and Node.js components
 */

const nextJest = require('next/jest');

const createJestConfig = nextJest({
  // Provide the path to your Next.js app to load next.config.js and .env files
  dir: './',
});

// Add any custom config to be passed to Jest
const customJestConfig = {
  // Setup files to run before each test
  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
  setupFiles: ['<rootDir>/jest.env-setup.js'],

  // Test environment for React components
  testEnvironment: 'jest-environment-jsdom',

  // Module name mapping for path aliases
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
    '^@/tests/(.*)$': '<rootDir>/tests/$1',
  },

  // Test file patterns
  testMatch: [
    '<rootDir>/tests/**/*.test.{js,jsx,ts,tsx}',
    '<rootDir>/src/**/*.test.{js,jsx,ts,tsx}',
  ],

  // Files to ignore during testing
  testPathIgnorePatterns: [
    '<rootDir>/.next/',
    '<rootDir>/node_modules/',
    '<rootDir>/dist/',
    '<rootDir>/build/',
  ],

  // Coverage collection configuration
  collectCoverageFrom: [
    'src/**/*.{js,jsx,ts,tsx}',
    '!src/**/*.d.ts',
    '!src/app/layout.tsx',
    '!src/app/page.tsx',
    '!src/app/**/page.tsx',
    '!src/app/**/layout.tsx',
    '!src/app/globals.css',
    '!src/middleware.ts',
  ],

  // Coverage thresholds
  coverageThreshold: {
    global: {
      branches: 70,
      functions: 70,
      lines: 70,
      statements: 70,
    },
    // Specific thresholds for critical files
    'src/lib/auth-service.ts': {
      branches: 80,
      functions: 80,
      lines: 80,
      statements: 80,
    },
    'src/lib/db.ts': {
      branches: 80,
      functions: 80,
      lines: 80,
      statements: 80,
    },
    'src/lib/database-new.ts': {
      branches: 75,
      functions: 75,
      lines: 75,
      statements: 75,
    },
  },

  // Coverage output directory
  coverageDirectory: '<rootDir>/coverage',

  // Coverage reporters
  coverageReporters: [
    'text',
    'text-summary',
    'html',
    'lcov',
    'json',
  ],

  // Transform configuration
  transform: {
    '^.+\\.(js|jsx|ts|tsx)$': ['babel-jest', { presets: ['next/babel'] }],
  },

  // Module file extensions
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],

  // Global test timeout
  testTimeout: 30000,

  // Verbose output
  verbose: true,

  // Clear mocks between tests
  clearMocks: true,

  // Restore mocks after each test
  restoreMocks: true,

  // Error handling
  errorOnDeprecated: true,

  // Watch mode configuration
  watchPathIgnorePatterns: [
    '<rootDir>/node_modules/',
    '<rootDir>/.next/',
    '<rootDir>/coverage/',
  ],

  // Globals available in tests
  globals: {
    'ts-jest': {
      tsconfig: {
        jsx: 'react-jsx',
      },
    },
  },
};

// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
module.exports = createJestConfig(customJestConfig);