Method _isRunInTest

lib/application.js:189–225

* check test env

()

   * check test env
   */
  _isRunInTest() {
    const {
      JEST_WORKER_ID,
      NODE_ENV,
      THINK_UNIT_TEST
    } = process.env;

    /**
     * https://github.com/facebook/jest/pull/5860
     * provide process.env.JEST_WORKER_ID="1" for cases when Jest * runs the tests on the main process.
     */
    const runInJest = JEST_WORKER_ID !== undefined;
    /**
     * https://github.com/avajs/ava/blob/master/docs/01-writing-tests.md
     * AVA will set process.env.NODE_ENV to test, unless the
     * NODE_ENV environment variable has been set.
     */
    const runInAva = NODE_ENV === 'test';

    /**
     * https://github.com/AndreasPizsa/detect-mocha/blob/master/index.js
     */
    const runInMocha = [
      'afterEach',
      'after',
      'beforeEach',
      'before',
      'describe',
      'it'
    ].every(name => global[name] instanceof Function);

    /**
     * Other Test framework we can't detect should add environment * by user
     */
    const runInUserDefine = !!THINK_UNIT_TEST;
    return runInJest || runInAva || runInMocha || runInUserDefine;
  }
  /**
   * run
   */