6. – Shaun Dunne
( https://medium.com/fear-and-coding )
“If you’re doing automation, you’re already
doing something right. It’s not about how you
do it”
7. Grunt.js
• Javascript based task runner
• automate repetitive tasks
• large ecosystem of plugins (2500+)
• easy to maintain
• simple to learn and use
11. watch
• runs predefined tasks when files change
• use patterns to indicate which files to watch
12. jshint
• static code analysis tool
• detect errors & potential problems
• enforce team coding conventions
• every time we change a .js file
13. jsbeautify
• reformats Javascript source code
• enforces code formatting conventions
• easier to read and understand
• every time we change a .js file
14.
15.
16.
17. live reload
• monitors changes in files
• preprocesses files as needed
• browser automatically reloads and shows your
changes
• built into grunt-contrib-watch
21. !
~ Gerald Weinberg
Weinberg’s Second Law:
!
“If builders built buildings the way
programmers wrote programs, the first wood-
pecker that came along would destroy
civilization”
24. BDD vs TDD
• The gotcha with TDD is that too many developers focused on
the "How" when writing their unit tests, so they ended up
with very brittle tests that did nothing more than confirm
that the system does what it does.
• BDD provides a new vocabulary and thus focus for writing a
unit test. Basically it is a feature driven approach to TDD.
26. Tools
• mocha - (http://visionmedia.github.io/mocha/) BDD, TDD, QUnit
styles via interfaces
• should.js - (https://github.com/visionmedia/should.js/) expressive,
readable, test framework agnostic, assertion
library
• supertest - (https://github.com/visionmedia/supertest) Super-agent
driven library for testing HTTP servers. E2E for
apis.
• Protractor - (https://github.com/angular/protractor) E2E test
framework for Angular apps
27. … caveat
• This is based on my personal experience and
opinion - YMMV
• I’ve been known to change my mind ;-)
• … BUT these tools and techniques are being
used on a lot of projects successfully.
28. Mocha
• vs Jasmine - Jasmine is easier to get started –
great all-in-one test framework.
• Mocha is more flexible: you have to piece it
together yourself. i.e. add an assertion
framework, add a spy/mocking framework.
Supports different styles of testing, lots of
reporters (spec, xunit, nyan ;-) ) & disable tests
29. describe(“my test suite”, function(){!
!
! it(“should test something”, function(done){!
! ! // do some assertions here!
! ! // when your test completes call !
! ! done();!! !
! });!
!
! xit(“this test is skipped”, function(done){!
! ! done();!! !
! });!
!
});
Mocha - BDD
30. should.js
• nice assertion library. There are lots of others
for example chai which is also very good.
• chainable language to construct assertions
• its api provides lots of assertion methods
• very easy to read
35. supertest
• great way to test running http apis,
• provides assertions and expectations for http
• when combined with async, makes it easy to
test a series of api calls
• easy to use and makes tests easy to read!
38. Protractor
• Browser testing for Angular.js apps, built on
Webdriver.js
• uses selenium-webdriver, tests written in WebDriver
API, communicates with Selenium to control
browsers
• you can run tests locally using Selenium-Standalone
• you can run tests against any service that exposes
Selenium Hub endpoint ( BrowserStack, SauceLabs)
40. it('should greet the named user', function() {!
browser.get('http://www.angularjs.org');!
!
// find the element with ng-model matching 'yourName'!
element(by.model('yourName')).sendKeys('Nadeem');!
!
// find the <h1>Hello {{yourName}}!</h1> element.!
var greeting = element(by.binding('yourName'));!
!
expect(greeting.getText()).toEqual('Hello Nadeem!');!
});
43. E2E testing pitfalls
• Use Selenium Standalone on local dev machines
• Use Continuous Integration to test range of browsers
on different OS. Nightly builds etc.
• Use BrowserStack / SauceLabs / Other for CI, unless
you have time/£ to set up you’re own infrastructure.
• Tunnelling to test local / internal deployments from
those services can be slow / unreliable; avoid if
possible …
