codeceptjs/lib/listener/config.js

Modern Era Acceptance Testing Framework for NodeJS

const event = require('../event');
const container = require('../container');
const recorder = require('../recorder');
const { deepMerge, deepClone, ucfirst } = require('../utils');
const { debug } = require('../output');
/**
 * Enable Helpers to listen to test events
 */
module.exports = function () {
  const helpers = container.helpers();

  enableDynamicConfigFor('suite');
  enableDynamicConfigFor('test');

  function enableDynamicConfigFor(type) {
    event.dispatcher.on(event[type].before, (context = {}) => {
      function updateHelperConfig(helper, config) {
        const oldConfig = Object.assign({}, helper.options);
        try {
          helper._setConfig(deepMerge(deepClone(oldConfig), config));
          debug(`[${ucfirst(type)} Config] ${helper.constructor.name} ${JSON.stringify(config)}`);
        } catch (err) {
          recorder.throw(err);
          return;
        }
        event.dispatcher.once(event[type].after, (t) => {
          helper._setConfig(oldConfig);
          debug(`[${ucfirst(type)} Config] Reverted for ${helper.constructor.name}`);
        });
      }

      // change config
      if (context.config) {
        for (let name in context.config) {
          const config = context.config[name];
          if (name === '0') { // first helper
            name = Object.keys(helpers)[0];
          }
          const helper = helpers[name];
          updateHelperConfig(helper, config);
        }
      }
    });
  }
};