Behaviour Driven Development
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Behavior Driven Development (BDD) is a practice aimed at improving software delivery by fostering collaboration among all stakeholders to ensure shared understanding of project requirements. The document discusses common issues in project management, specifically the high rate of project restarts, and provides a framework for defining user stories and requirements through scenarios relevant to serving advertisements. It includes specific coding examples for implementing BDD with tools like Behat and Mink in the context of advertisement targeting based on user country and channel.
![Enter some logic
<?php
use BehatBehatTesterExceptionPendingException;
use BehatMinkExtensionContextMinkContext;
use BehatBehatContextSnippetAcceptingContext;
class WebContext extends MinkContext implements SnippetAcceptingContext
{
private $pages = array(
'default' => '/',
'home' => '/',
'game' => '/spel/donuts-saras-kookcursus'
);
private $channels = array(
'Teens' => 'http://www.agame.com',
'Girls' => 'http://www.girlsgogames.com',
'Family' => 'http://spel.nl'
);
/**
* @Given the visitor is from :country
*/
public function theVisitorIsFrom($country)
{
$this->getSession()->setCookie('country', $country);
}
/**
* @When the visitor is on the :page page
*/
public function theVisitorIsOnThePage($page)
{
$this->visitPath($this->pages[$page]);
}
/**
* @When the visitor is on the :arg1 channel
*/
public function theVisitorIsOnTheChannel($channel)
{
$this->setMinkParameter('base_url', $this->channels[$channel]);
}
/**
* @Then advertisements should be served by :provider
*/
public function advertisementsShouldBeServedBy($provider)
{
// provider check...
}
}](https://image.slidesharecdn.com/behaviourdrivendevelopment-150629091356-lva1-app6891/85/Behaviour-Driven-Development-13-320.jpg)
Behaviour Driven Development
- 1. BDD Behaviour Driven Development Why we should use it
- 2. Project restarts One of the major causes of both cost and time overruns is restarts. For every 100 projects that start, there are 94 restarts. This does not mean that 94 of 100 will have one restart, some projects can have several restarts. src: http://www.projectsmart.co.uk/docs/chaos-report.pdf
- 3. What is BDD? Behavior Driven Development (BDD) is a software engineering practice designed to help teams build and deliver more valuable, higher quality software faster. It is not about programming, testing or management. It's about building together.
- 4. Building together To do this, we need a way to describe the requirement such that everyone ● the business folks (customer) ● the product owner ● the development team have a common understanding of the scope of the work. source: http://dannorth.net/whats-in-a-story/
- 5. Actionable Common understanding Business value Low hanging fruit Product requirements Delivery Impact analyses Acceptance criteria JavaScript Performance tweakers.ne t Trafficker Advertisements Video Views We all have our jargon….
- 6. Use case It would be great if we could connect multiple advertisement agents worldwide. Then visitors can see local advertisements. Feature: Local advertisements for visitors In order to see local advertisements, As a Visitor I want the website to detect my country settings, So that the right Advertising agent will serve my advertisements
- 7. Present the story to the dev team The Visitor doesn't benefit from this feature, but the Advertising traffickers. They will have full control over country based advertisements. How about control on channels? Feature: Country Based Advertisement Serving on portals In order to be able to serve advertisements by different agents As a Advertising trafficker I want define the agent based on the country and channel
- 8. Making the boss happy I love you guys. This will bring in even more $ money $. While you're on it please add support for pages as well.... Feature: Country Based Advertisement Serving on portals In order to be able to serve advertisements by different agents As a Advertising trafficker I want define the agent based on the country, channel and page
- 9. Writing the story Feature: Country Based Advertisement Serving on portals In order to be able to serve advertisements by different agents As a Advertising trafficker I want define the agent based on the country, portal and page
- 10. Refining the story Feature: Country Based Advertisement Serving on portals In order to be able to serve advertisements by different agents As a Advertising trafficker I want define the agent based on the country, portal and page Scenario Outline: Visitors on certain channel pages Given the visitor is from "<country>" When the visitor is on the "<page>" page And the visitor is on the "<channel>" channel Then advertisements should be served by <agent> Examples: ####################################################### | country | page | channel | agent | ####################################################### | default | default | default | Google | | The Netherlands | home | default | Google | | America | game | Family | AdTech | | America | home | Teens | StarMedia | | America | home | Girls | Google |
- 11. Behat + Mink + Selenium2 = YEAH!
- 12. Generated snippet <?php use BehatBehatTesterExceptionPendingException; use BehatMinkExtensionContextMinkContext; use BehatBehatContextSnippetAcceptingContext; class WebContext extends MinkContext implements SnippetAcceptingContext { /** * @Given the visitor is from :arg1 */ public function theVisitorIsFrom($arg1) { throw new PendingException(); } /** * @When the visitor is on the :arg1 page */ public function theVisitorIsOnThePage($arg1) { throw new PendingException(); } /** * @When the visitor is on the :arg1 channel */ public function theVisitorIsOnTheChannel($arg1) { throw new PendingException(); } /** * @Then advertisements should be served by :provider */ public function advertisementsShouldBeServedBy($provider) { throw new PendingException(); } }
- 13. Enter some logic <?php use BehatBehatTesterExceptionPendingException; use BehatMinkExtensionContextMinkContext; use BehatBehatContextSnippetAcceptingContext; class WebContext extends MinkContext implements SnippetAcceptingContext { private $pages = array( 'default' => '/', 'home' => '/', 'game' => '/spel/donuts-saras-kookcursus' ); private $channels = array( 'Teens' => 'http://www.agame.com', 'Girls' => 'http://www.girlsgogames.com', 'Family' => 'http://spel.nl' ); /** * @Given the visitor is from :country */ public function theVisitorIsFrom($country) { $this->getSession()->setCookie('country', $country); } /** * @When the visitor is on the :page page */ public function theVisitorIsOnThePage($page) { $this->visitPath($this->pages[$page]); } /** * @When the visitor is on the :arg1 channel */ public function theVisitorIsOnTheChannel($channel) { $this->setMinkParameter('base_url', $this->channels[$channel]); } /** * @Then advertisements should be served by :provider */ public function advertisementsShouldBeServedBy($provider) { // provider check... } }
- 14. Run! Run! Run!
- 15. Tested 5 scenarios in 10 seconds.
- 16. Questions?