@percy/sdk-utils/test/helpers.js

Common JavaScript SDK utils

const utils = require('@percy/sdk-utils');

const helpers = {
  async setupTest({ logger = true } = {}) {
    utils.percy.version = '';
    delete utils.percy.config;
    delete utils.percy.build;
    delete utils.percy.enabled;
    delete utils.percy.domScript;
    delete utils.logger.log.history;
    delete utils.logger.loglevel.lvl;
    delete process.env.PERCY_LOGLEVEL;
    delete process.env.PERCY_SERVER_ADDRESS;
    utils.logger.log = helpers.logger.__log__;
    if (logger) helpers.logger.mock();
    await helpers.test('reset');
  },

  async test(cmd, arg) {
    let res = await utils.request.post(`/test/api/${cmd}`, arg);
    return res.body;
  },

  async get(what, map) {
    let res = await utils.request(`/test/${what}`);
    if (!map) map = what === 'logs' ? (l => l.message) : (i => i);
    return Array.isArray(res.body[what]) ? res.body[what].map(map) : map(res.body);
  },

  async mockGetCurrentUrl() {
    try {
      await utils.request('/wd/hub/session');
    } catch {}
  },

  get testSnapshotURL() {
    return `${utils.percy.address}/test/snapshot`;
  },

  logger: {
    __log__: utils.logger.log,
    loglevel: utils.logger.loglevel,
    stdout: [],
    stderr: [],

    mock() {
      helpers.logger.reset();

      utils.logger.log = (ns, lvl, msg) => {
        if (lvl === 'debug' && helpers.logger.loglevel.lvl !== 'debug') return;
        msg = `[percy${lvl === 'debug' ? `:${ns}` : ''}] ${msg}`;
        let io = (lvl === 'info') ? 'stdout' : 'stderr';
        helpers.logger[io].push(msg);
      };
    },

    reset() {
      helpers.logger.stdout = [];
      helpers.logger.stderr = [];
      helpers.logger.loglevel('info');
    }
  }
};

module.exports = helpers;