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 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...

Cucumber

It's a hight level framework testing

See more here

Let's see

# language: en
Feature: Addition
  In order to avoid silly mistakes
  As a math idiot 
  I want to be told the sum of two numbers

  Scenario Outline: Add two numbers
    Given I have entered <input_1> into the calculator
    And I have entered <input_2> into the calculator
    When I press <button>
    Then the result should be <output> on the screen
  Examples:
    | input_1 | input_2 | button | output |
    | 20      | 30      | add    | 50     |
    | 2       | 5       | add    | 7      |
    | 0       | 40      | add    | 40     |

Advantages

• The syntax is really similar to a real User-story
• High level testing

Drawbacks

• Need to learne the syntax
• Syntax has no link with ruby

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
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
• Could be integrate with Selenium

Drawbacks

• Need to understand Ruby