Helper method to simulate beforeAll behavior for tests using protractor.

beforeAll.helper.js

/**
 * @file
 * Protractor beforeAll implementation as helper.
 */

var history = [];

/**
 * BeforeAll implementation.
 */
function beforeAll(callback) {
  (callback.length ? beforeAllAsync : beforeAllSync).call(null, callback);
}

/**
 * BeforeAll Synchronous: used when there is no "done" argument
 * defined in the callback.
 */
function beforeAllSync(callback) {
  // Avoid registering multiple beforeEach callbacks.
  if (!~history.indexOf(callback)) {
    beforeEach(function () {
      // Only execute if never executed before.
      if (!~history.indexOf(callback)) {
        history.push(callback);
        callback();
      }
    });
  }
}

/**
 * BeforeAll Asynchronous: used when there is a "done" argument
 * defined in the callback.
 */
function beforeAllAsync(callback) {
  // Avoid registering multiple beforeEach callbacks.
  if (!~history.indexOf(callback)) {
    beforeEach(function (done) {
      // Only execute if never executed before.
      if (!~history.indexOf(callback)) {
        history.push(callback);
        callback(done);
      }
    });
  }
}

module.exports = beforeAll;