Gavin Mogan

@halkeye

http://www.gavinmogan.com

Code Monkey @ Sauce Labs

Why not testing?

First Job

Low pay
Develop Live
No source control
No testing

Gross

use Inhouse::Library;
use JSON;

$user = Inhouse::Library::createUser({ 
    username => "zoidberg", 
    password => "doctor"
});

print JSON::to_json($user);

gavin.pl

const Users = require('./models/users.js');

Users.createUser({ 
    username => "zoidberg", 
    password => "doctor"
}).then(function(user) {
    console.log($user);
});

gavin.js

Gavin asks you

(Gavin draws the best)

Indirect Pros

Learning Codebases
- New Hire can write tests
- Tests are always up to date when compared to documentation
- When/why is this code supposed to be used.

"We need time to test"

Often leads to features being shipped that have never been used
Blame others (QA) when things don't get caught

Why not testing first?

Helps you think about design
Lets you fail fast
Write failing test first, then code
Refactoring later isn't scary

How do I run tests?

grunt/gulp/etc
mocha (with watch)
qunit
many many more

Javascript

Ruby

guard
rake
rspec
minitest
unittest
many many more

IDEs

IdeaJ
Sublime/Atom
many many more

Python

nose
unittests
many many more

No, more automated!

Jenkins
Travis-ci (.org)
Circle CI
Bamboo
Team City
Visual Studio Online (VSTS)
more more more

Where do I start testing

Convert simple scripts into tests
Generally anything you care about
API Return values
Public methods
Small discreet units

Don't forget bugs

How do I test?

Really easy.

Run some code
Check the value

test "should save article with title" do
  article = Article.new(title => "Gavin's Article")
  assert article.save
end

test "should load with the same title" do
  # create new article
  created_article = Article.create(title => "Gavin's Better Article")
  assert_not_null created_article
  # load from DB
  loaded_article = Article.find(created_article.id)
  # check values
  assert_not_null loaded_article
  assert_equal loaded_article.title, "Gavin's Better Article"
end

E2E Tests

Usually involve setting up a complete environment
Websites will actually automate browsers for testing
Mobile apps will test in emulators or real devices with real apps
Talking to a fully setup backend. Hopefully not production code, but certainly possible

Example

https://github.com/saucelabs-sample-test-frameworks/JS-Mocha-WD.js

More Information

Selenium - Website Testing / Automation
- http://www.seleniumhq.org/
Appium - Mobile (And more) / Automation
- http://appium.io/
- Android
- IOS
- Universal Windows Platform
Xamarin
- (Let other speaker talk about it)

Thanks

@halkeye

http://www.gavinmogan.com

Gavin Mogan