BDD with Drupal using Behat

Use Behat and DrupalExtension to automate testing of Drupal applications.

By Hussain Abbas / @hussainweb
for Drupal Bangalore Mini-camp

That's me

We're Hiring!

Behaviour Driven Development

• Based on TDD approach
  • Test First
  • Implement the unit
  • Verify that the tests succeed
• What's different?
  • More specific tests
  • What should be tested?
  • How it should be tested?

“BDD is a second-generation, outside-in, pull-based, multi stakeholder, multiple scale, high automation, agile technology.” — Dan North

Make it simpler

“BDD is when you use examples in conversations to illustrate behaviour.” — Liz Keogh

Why BDD?

“... test software the matters.”

We Deliver Waste

in name of features

Clients don't care about:

• Scope
• Budget

They care about their business.

Conversation

Start Talking

• Ask Business questions
• Business Examples
• Can you give me an example?
• Less about features, more about software that matters

Conversation

• More important than capturing it.
• More important than automating it.

Features

• Why would anyone want this feature?
• Who will benefit?
• What does he need to do?

Ubiquitous Language

Used everywhere.

• Language of business and developers.
• Product owners able to understand developers.
• And correct them.

Bad Features

• Implementation specific
• Too specific to technology

#language: en
Feature: Login

  Scenario: Login without filling any detail
    Given I am on "/user"
    When I press "Log in"
    And I should see the following <error messages>
    | error messages             |
    | Username field is required |
    | Password field is required |
                        

Good Features

• Readable
• Business Conversation
• Gives Examples
• Answers more questions
  • How to name things?

#language: en
Feature: Login

  Scenario: Create users
    Given users:
    | name     | mail            | status |
    | Joe User | joe@example.com | 1      |
    And I am logged in as a user with the "administrator" role
    When I visit "admin/people"
    Then I should see the link "Joe User"