features/support/hook.js

/**
 * Copyright (c) 2016-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

var {After, Before} = require('cucumber');
var remove = require('remove');
var mkdirp = require('mkdirp');
var fs = require('fs');

var TMP_DIR_PATH = __dirname + '/../../tmp';
var iterationNumber = 0;

function tmpDirectoryPath(sessionGuid) {
  return TMP_DIR_PATH + '/' + sessionGuid;
}

function isFirstBeforeRun() {
  if (!global.finishedFirstRun) {
    global.finishedFirstRun = true;
    return true;
  } else {
    return false;
  }
}

Before(function (testCase) {
  if (isFirstBeforeRun() && fs.existsSync(TMP_DIR_PATH)) {
    remove.removeSync(TMP_DIR_PATH);
  }
  iterationNumber += 1;
  this.testCase = testCase;
  this.tmpDirectoryPath = tmpDirectoryPath(iterationNumber);
  mkdirp.sync(this.tmpDirectoryPath);
});