export default {

displayName: 'unit',

// Use jsdom environment for DOM testing (React components)

testEnvironment: 'jsdom',

// Jest 30 performance optimizations

maxWorkers: '50%',

workerIdleMemoryLimit: '512MB',

// Jest 30 new features

waitForUnhandledRejections: true,

// Setup files to run before tests

setupFilesAfterEnv: [

'<rootDir>/test/unit/jest.setup.js'

],

// Test file patterns - Only look for unit tests

testMatch: [

'<rootDir>/test/unit/**/*.test.js'

],

// Standard Jest ignore patterns

testPathIgnorePatterns: [

'/node_modules/'

],

// Ignore integration test mocks to avoid duplicate mock warnings

modulePathIgnorePatterns: [

'<rootDir>/test/integration/__mocks__'

],

// Module name mapping for specific aliases and assets

moduleNameMapper: {

// Essential webpack aliases

'^text-encoding$': '<rootDir>/src/lib/string-encoding.js',

// Asset mocking (Note: CSS transforms are handled in transform section below)

'\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$': '<rootDir>/test/unit/__mocks__/fileMock.js',

'\\.(asc)$': '<rootDir>/test/unit/__mocks__/ascMock.js',

'\\.(css|less|scss|sass)$': '<rootDir>/test/unit/__mocks__/cssTransform.js'

},

// Module directories (equivalent to webpack resolve.modules)

moduleDirectories: [

'node_modules',

'<rootDir>/src'

],

// Transform files using babel-jest for JSX and modern JS

transform: {

'^.+\\.(js|jsx)$': ['babel-jest', {

configFile: './test/babel.config.cjs'

}]

},

// In general node_modules are not transformed, except ES modules that need it

transformIgnorePatterns: [

'node_modules/'

//'node_modules/(?!(@openpgp/web-stream-tools|emailjs-mime-builder)/)'

],

// Collect coverage from source files - Focus on core modules

collectCoverageFrom: [

'src/app/**/*.js',

'src/client-API/**/*.js',

'src/components/**/*.js',

'src/content-scripts/**/*.js',

'src/controller/**/*.js',

'src/lib/**/*.js',

'src/modules/**/*.js',

'!src/**/*.test.js',

'!src/**/__tests__/**',

'!**/node_modules/**'

],

// Coverage output directory

coverageDirectory: '<rootDir>/coverage/unit',

// Coverage reporters

coverageReporters: [

'text',

'lcov',

'html'

],

// Clear mocks between tests

clearMocks: true,

// Restore mocks after each test

restoreMocks: true,

// Cache directory for better performance

cacheDirectory: '<rootDir>/node_modules/.cache/jest/unit',

// Test timeout (in milliseconds) - Crypto operations need more time

testTimeout: 10000,

// Handle imports with file extensions

moduleFileExtensions: [

'js',

'jsx',

'json',

'css',

'scss',

'sass'

],

// Global variables

globals: {

'NODE_ENV': 'test'

}

};