'use strict';

// Do this as the first thing so that any code reading it knows the right env.

process.env.BABEL_ENV = 'test';

process.env.NODE_ENV = 'test';

process.env.PUBLIC_URL = '';

// Makes the script crash on unhandled rejections instead of silently

// ignoring them. In the future, promise rejections that are not handled will

// terminate the Node.js process with a non-zero exit code.

process.on('unhandledRejection', err => {

  throw err;

});

// Ensure environment variables are read.

require('../config/env');

const jest = require('jest');

const execSync = require('child_process').execSync;

let argv = process.argv.slice(2);

function isInGitRepository() {

  try {

    execSync('git rev-parse --is-inside-work-tree', {stdio: 'ignore'});

    return true;

  } catch (e) {

    return false;

  }

}

function isInMercurialRepository() {

  try {

    execSync('hg --cwd . root', {stdio: 'ignore'});

    return true;

  } catch (e) {

    return false;

  }

}

// Watch unless on CI or explicitly running all tests

if (

  !process.env.CI &&

  argv.indexOf('--watchAll') === -1 &&

  argv.indexOf('--watchAll=false') === -1

) {

  // https://github.com/facebook/create-react-app/issues/5210

  const hasSourceControl = isInGitRepository() || isInMercurialRepository();

  argv.push(hasSourceControl ? '--watch' : '--watchAll');

}

jest.run(argv);