chai: Using Mocha framework with Appium for automation, I am also using chai should for assertions, but when they fail mocha waits for the time out and does not throw the assertion error

Sample code:

File 1 where should is being called:

var wd = require("wd");

require('colors');
var chai = require("chai");
var chaiAsPromised = require("chai-as-promised");
chai.use(chaiAsPromised);
var should = chai.should();
chaiAsPromised.transferPromiseness = wd.transferPromiseness;

exports.should = should;

File 2 where I am using a should assertion:

'use strict';

require( 'colors' );
require( '../../helpers/setup' );
var alerts   = require( '../../helpers/alerts' );
var assert   = require( 'assert' );
//var expect   = require( 'expect' );
var caps     = require( '../../helpers/caps' );
var config   = require( '../../helpers/Config' );
var commons  = require( '../../helpers/Commons' );
var elements = require( '../../helpers/elements' );
var login    = require( '../../helpers/loginTable' );
var Store    = require( '../../helpers/Store' );

var driver = config.driver;

var truckOption;
var clockInOption;
var userRole;
var userName;
var name;
var permissionGranted;
var newJob;

describe( 'Start login Process'.green, function() {

    it( 'should login'.green, function( done ) {
        config.loginTest = true;
        return driver
        .elementByName( elements.loginScreen.client_account )
        .isDisplayed().should.eventually.be.true
        .elementByName( elements.loginScreen.user_name )
        .isDisplayed().should.eventually.be.true
        .elementByName( elements.loginScreen.password )
        .isDisplayed().should.eventually.be.true
        .elementByName( elements.loginScreen.login_button )
        .isDisplayed().should.eventually.be.true
        .elementByName( elements.loginScreen.accept_terms )
        .isDisplayed().should.eventually.be.true
        .elementByName( elements.loginScreen.client_account

So lets say 1st element is not displayed or returns false, should sees that and does not move on with the test, but at the same time does not throw the error why it failed or didnt move on

About this issue

Original URL
State: closed
Created 8 years ago
Comments: 18 (9 by maintainers)

Most upvoted comments

@keithamus @lucasfcosta I’d love your guys opinion on this one. Seems like a tricky issue.

Here are some tests with the latest versions of node, mocha, chai, chai-as-promised, and bluebird.

Note that the only combination that doesn’t produce a useful stack trace is native promises + chai-as-promised (regardless of chai.config.includeStack setting).

var BBPromise = require('bluebird');
var chai = require('chai');
var chaiAsPromised = require('chai-as-promised');

BBPromise.config({longStackTraces: true});

chai.use(chaiAsPromised);
chai.should();

var expect = chai.expect;

describe('promise', function () {
  afterEach(function () {
    chai.config.includeStack = false;
  });

  it('native Promise', function () {
    var promise = Promise.resolve(42);
    return promise.then(function (val) {
      expect(val).to.equal(43);
    });
  });

  it('native Promise; chai-as-promised', function () {
    var promise = Promise.resolve(42);
    return expect(promise).to.eventually.equal(43);
  });

  it('native Promise; chai-as-promised; chai.config.includeStack', function () {
    chai.config.includeStack = true;

    var promise = Promise.resolve(42);
    return expect(promise).to.eventually.equal(43);
  });

  it('bluebird Promise; longStackTraces', function () {
    var promise = BBPromise.resolve(42);
    return promise.then(function (val) {
      expect(val).to.equal(43);
    });
  });

  it('bluebird Promise; chai-as-promised; longStackTraces', function () {
    var promise = BBPromise.resolve(42);
    return expect(promise).to.eventually.equal(43);
  });
});

Results:

promise
    1) native Promise
    2) native Promise; chai-as-promised
    3) native Promise; chai-as-promised; chai.config.includeStack
    4) bluebird Promise; longStackTraces
    5) bluebird Promise; chai-as-promised; longStackTraces


  0 passing (26ms)
  5 failing

  1) promise native Promise:

      AssertionError: expected 42 to equal 43
      + expected - actual

      -42
      +43

      at test/index.js:20:22

  2) promise native Promise; chai-as-promised:

      AssertionError: expected 42 to equal 43
      + expected - actual

      -42
      +43



  3) promise native Promise; chai-as-promised; chai.config.includeStack:

      AssertionError: expected 42 to equal 43
      + expected - actual

      -42
      +43

      at assertEqual (node_modules/chai/lib/chai/core/assertions.js:487:12)
      at ctx.(anonymous function) (node_modules/chai/lib/chai/utils/addMethod.js:41:25)
      at node_modules/chai-as-promised/lib/chai-as-promised.js:308:26

  4) promise bluebird Promise; longStackTraces:

      AssertionError: expected 42 to equal 43
      + expected - actual

      -42
      +43

      at test/index.js:39:22
  From previous event:
      at Context.<anonymous> (test/index.js:38:20)

  5) promise bluebird Promise; chai-as-promised; longStackTraces:

      AssertionError: expected 42 to equal 43
      + expected - actual

      -42
      +43

      at doAsserterAsyncAndAddThen (node_modules/chai-as-promised/lib/chai-as-promised.js:307:16)
      at .<anonymous> (node_modules/chai-as-promised/lib/chai-as-promised.js:255:21)
      at ctx.(anonymous function) [as equal] (node_modules/chai/lib/chai/utils/overwriteMethod.js:49:33)
      at Context.<anonymous> (test/index.js:45:42)



npm ERR! Test failed.  See above for more details.

meeber on Jun 2, 2016

Let me work on that.

blueice349 on May 31, 2016