test.js

// @remove-on-eject-begin
/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
// @remove-on-eject-end

process.env.NODE_ENV = 'test';
process.env.PUBLIC_URL = '';

// Load environment variables from .env file. Suppress warnings using silent
// if this file is missing. dotenv will never modify any environment variables
// that have already been set.
// https://github.com/motdotla/dotenv
require('dotenv').config({silent: true});

const jest = require('jest');
const argv = process.argv.slice(2);

// Watch unless on CI or in coverage mode
if (!process.env.CI && argv.indexOf('--coverage') < 0) {
  argv.push('--watch');
}

// A temporary hack to clear terminal correctly.
// You can remove this after updating to Jest 18 when it's out.
// https://github.com/facebook/jest/pull/2230
var realWrite = process.stdout.write;
var CLEAR = process.platform === 'win32' ? '\x1Bc' : '\x1B[2J\x1B[3J\x1B[H';
process.stdout.write = function(chunk, encoding, callback) {
  if (chunk === '\x1B[2J\x1B[H') {
    chunk = CLEAR;
  }
  return realWrite.call(this, chunk, encoding, callback);
};

// @remove-on-eject-begin
// This is not necessary after eject because we embed config into package.json.
const createJestConfig = require('../utils/createJestConfig');
const path = require('path');
const paths = require('../config/paths');
argv.push('--config', JSON.stringify(createJestConfig(
  relativePath => path.resolve(__dirname, '..', relativePath),
  path.resolve(paths.appSrc, '..'),
  false
)));
// @remove-on-eject-end
jest.run(argv);