How to be sure that your web app is working?

You can trust developpers

You test it!

1. You open a browser
2. Visit the url of your application
3. Fill in a form
4. Check if the page should have the right content

And you do it for every single change, and you check for every single page, for every case

Advantages

• You will become really good using your application

Drawbacks

• Time consuming
• Do not add value to the product
• Do not let you focus on the user experience
• Stupid task

A better solution?

Why not hire a monkey?

Advantages

• You pay him with banana
• It will do any stupid task
• It's cute
• It could repeat action as long as you give bananas

Drawbacks

• It's a monkey ;-)
• Training time
• It could be loud
• The office is not suitable

So let's find a better solution...

Let's hire a robot!

Advantages

• You do not pay him
• It will do any stupid task
• It can test every part of your application, not just the interface
• It could repeat action as long as you want
• it's a computer

Drawbacks

• Not cute like a monkey
• Need to program this robot

How we programm this robot?

Cucumber

It's a hight level framework testing

See more here

Let's see

Feature: Search
  In order to learn more
  As an information seeker
  I want to find more information

  Scenario: Find what I'm looking for
    Given I am on the search page
    And I have posts titled article top, other staff
    When I search for "article top"
    Then I should see
      """
      article top
      """

Under the hood!

You also need to define specific words

Given 'I am on the search page' do
  @browser.goto '/search'
end

When /I search for "(.*)"/ do |query|
  @browser.text_field(:name, 'q').set(query)
  @browser.button(:name, 'btnG').click
end

Then /I should see/ do |text\
  @browser.text.should =~ /#{text}/m
end

Advantages

• The syntax is really similar to a real User-story
• Framework force to write straightforward user stories
• High level testing

Drawbacks

• Need to learn the syntax
• Syntax has no link with ruby
• You need extra work to define specific task

Rspec with sugar*

* Capybara, Selenium-webdriver, Factory_girl_rails, ...

Framework for testing developer friendly and easy to read.

Let's see

describe "Search /blog" do
  it "should be able to search into the blog database" do
    post = FactoryGirl.create(:post)
    post2 = FactoryGirl.create(:post, title: 'other staff' )
    visit home_path
    fill_in 'search', :with => 'article top'
    click_on 'Search'
    page.should have_content("article top")
  end
end

Advantages

• Really flexible allow hight level testing and unit test
• With the sugar test case are easy to read for non developer
• Close to the ruby
• When it's written nothing to add
• Could be integrate with Selenium

Drawbacks

• Need to understand Ruby

How we know when test are passing?

You can trust your developpers

You use a building tool

It will give you a nice interface to build your project and see test result

(without knowing anything about development)

Jenkins

See more

One of the most famous, using Java to run on a server

• Really powerful :-)
• Any language
• Really complexe to setup :-(

Travis

See more

Really powerfull solution for open source project

• Really powerfull
• Any language
• Really easy to setup for opensource project
• Really expensif/complex to setup for private project

Integrity

See more

Build tool made with ruby on rails

• Really simple to use
• Simple to setup and install
• Works for any project
• Any language
• Too simple