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jest.config.js
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jest.config.js
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// Consistent timezone for testing.
// This does not work on windows, see https://github.com/nodejs/node/issues/4230
/* eslint-env node */
process.env.NODE_ENV = 'test';
process.env.TZ = 'UTC';
module.exports = {
setupFilesAfterEnv: ['./testSetup.js'],
collectCoverageFrom: [
'bin/*.js',
'app/javascript/**/*.{js,jsx}',
// This exclusion avoids running coverage on Barrel files, https://twitter.com/housecor/status/981558704708472832
'!app/javascript/**/index.js',
'!app/javascript/packs/**/*.js', // avoids running coverage on webpacker pack files
'app/javascript/packs/dashboards/*.js', // try opting-in for jest coverage?
'!**/__tests__/**',
'!**/__stories__/**',
'!app/javascript/storybook-static/**/*.js',
// We do not need code coverage on files that are prop types
// or eslint configuration files.
'!app/javascript/**/*PropTypes.js',
'!./**/.eslintrc.js',
// Ignore Storybook configuration files
'!app/javascript/.storybook/**/*.{js,jsx}',
],
coverageDirectory: 'coverage/jest',
coverageThreshold: {
global: {
statements: 43,
branches: 45,
functions: 42,
lines: 44,
},
},
moduleNameMapper: {
'\\.(svg|png|css)$': '<rootDir>/empty-module.js',
'^@crayons(.*)$': '<rootDir>/app/javascript/crayons$1',
'^@images(.*)$': '<rootDir>/app/assets/images$1',
'^@utilities(.*)$': '<rootDir>/app/javascript/utilities$1',
'^@components(.*)$': '<rootDir>/app/javascript/shared/components$1',
'^react$': 'preact/compat',
'^react-dom$': 'preact/compat',
},
// The webpack config folder for webpacker is excluded as it has a test.js file that gets
// picked up by jest if this folder is not excluded causing a false negative of a test suite failing.
testPathIgnorePatterns: [
'/node_modules/',
'<rootDir>/config/webpack',
// Allows developers to add utility modules that jest won't run as test suites.
'/__tests__/utilities/',
'<rootDir>/app/javascript/storybook-static',
'<rootDir>/cypress',
],
watchPlugins: [
'jest-watch-typeahead/filename',
'jest-watch-typeahead/testname',
],
testEnvironment: './customJsDomEnvironment.js',
// We occasionally need to allow transpiling of specific node_modules. See https://jestjs.io/docs/configuration#transformignorepatterns-arraystring
transformIgnorePatterns: [
'/node_modules/(?!(preact|react-colorful|i18n-js)/)',
],
reporters: [
'default',
[
'jest-junit',
{
addFileAttribute: 'true',
ancestorSeparator: ' › ',
classNameTemplate: '{classname}',
titleTemplate: '{title}',
},
],
],
};