Acceptance & Integration Testing With Behat (PHPNw2011)

Acceptance & Integration

Testing Using Behat

Ben WaineEmail: ben@ben-waine.co.uk

Twitter: @bwaine

Sunday, 9 October 11

Roadmap•Intro To Behaviour Driven Development

•Problems We Are Trying to solve at Sky With BDD

•Behat

•API Testing with Behat

•UI Testing with Behat

•Data Driven Testing

•Is Behat solving our problem?

Sky BetPHP / MySQL Stack

PHPUnit / Selenium / Behat

Software EngineerPHP Developer

BehaviourDriven Development

Behaviour-driven development (BDD) takes the position that you can turn an idea for a requirement into implemented, tested, production-ready code simply and effectively, as long as .... everyone knows what’s going on.

- Dan North

- Drinkwater et al 2011

Writing tests first in a customer friendly language

The Problem

The Business Analyst

The Tester

The Developer

The Problem

Resistance is futile.......Sunday, 9 October 11

What Does It Test?

ScriptsAPI’s

Web PagesModels

Integration Testing !=

Unit Testing

Anatomy Of A Behat Test

My Amazing PHP Conference Website!

Writing Behat Tests

$ben > cd /path/to/projects/tests$ben > behat --init

Writing Behat Tests

Feature Files

Feature: Home Page When visiting the PHPCon site As a site visitor I need to be able to see what ` conferences are coming up

ScenariosScenario: Get all conferences Given there is conference data in the database When I go to the homepage Then I should see three conferences in a table

ScenariosGiven

(Some Context)

When (Some Event)

Then (The Outcome)

Given (Some Context)

Given there is conference data in the database

When (Some Event)

When I go to the homepage

When I use the findConferences method

When I am on "/index.php"

When I fill in "search-text" with "PHP"

Then (The Outcome)

Then I should see three conferences in a table

Then I should get a array of three conferences

Then I should see "PHPNW"

ConferenceService.feature

Feature: ConferenceService Class In order to display conferences on PHPCon site As a developer I need to be able to retrieve conferences

Scenario: Get all conferences Given there is conference data in the database When I use the findConferences method Then I should get a array of three conferences AND it should contain the conference “PHPNW”

Class Methods & Annotations

/ Everybody Stand Back /

Behat Knows Regular Expressions

Copy and paste these methods into FeatureContext.php

Fill in the Feature Context File public function __construct(array $parameters) { $params = array( 'user' => $parameters['database']['username'], 'password' => $parameters['database']['password'], 'driver' => $parameters['database']['driver'], 'path' => $parameters['database']['dbPath'], );

$con = \Doctrine\DBAL\DriverManager::getConnection($params);

$confMapper = new \PHPCon\Conference\Mapper($con); $confService = new \PHPCon\Conference\Service($confMapper);

$this->service = $confService; }

Fill in the Feature Context File

/** * @Given /^there is conference data in the database$/ */ public function thereIsConferneceDataInTheDatabase() { $fileName = self::$dataDir .

'sample-conf-session-data.sql'; self::executeQueriesInFile($fileName); }

Fill in the Feature Context File

/** * @When /^I use the findConferences method$/ */ public function iUseTheFindConferencesMethod() { $this->result = $this->service->findConferences();

Fill in the Feature Context File /** *@Then /^I should get an array of (\d+) conferences$/ */ public function iShouldGetAnArrayOfConferences

($numberOfCons) { assertInternalType('array', $this->result); assertEquals($numberOfCons, count($this->result)); }

/** * @Then /^it should contain the * conference "([^"]*)"$/ */ public function itShouldContainTheConference

($confName) { $names = array();

foreach($this->result as $conf) { $names[$conf->getName()] = true; }

if(!array_key_exists($confName, $names)) { throw new \Exception("Conference "

. $confName . " not found"); } }

Ready to run the tests again.....

Failing Test

Add some application code.....

Passing Test!

What about the UI?

Goutte Sahi

Zombie.js

Extend Mink Context

Use Bundled steps to create higher level abstractions.

Includes predefined steps

Back To: My Amazing PHP Conference

Website!

Example

Scenario: View all conferences on the homepage Given there is conference data in the database When I am on "/index.php" Then I should see "PHPNW" in the ".conferences" element And I should see "PHPUK" in the ".conferences" element And I should see "PBC11" in the ".conferences" element

Using Minks Bundled Steps

# features/bootstrap/UIContext.php

use Behat\Behat\Context\ClosuredContextInterface, Behat\Behat\Context\BehatContext, Behat\Behat\Exception\PendingException;

use Behat\Gherkin\Node\PyStringNode, Behat\Gherkin\Node\TableNode;

require_once 'mink/autoload.php';

class UIContext extends Behat\Mink\Behat\Context\MinkContext{

class FeatureContext

public function __construct(array $parameters) { $this->useContext('subcontext_alias', new UIContext($parameters));

! // REST OF FEATURE CONSTRUCTOR

Powerful Headless UI Testing Out The Box

Scenario: View all conferences on the homepage Given there is conference data in the database When I am on the "home" page Then I should see "PHPNW" in the "conferences" table And I should see "PHPUK" in the "conferences" table And I should see "PBC11" in the "conferences" table

Abstracting your scenario

class UIContext extends Behat\Mink\Behat\Context\MinkContext{ protected $pageList = array( "home" => '/index.php'); protected $elementList = array( "conferences table" => '.conferences');

Mink Feature Context

/** * @When /^I am on the "([^"]*)" page$/ */ public function iAmOnThePage($pageName) {

if(!isset($this->pageList[$pageName])) { throw new Exception( 'Page Name: not in page list'); } $page = $this->pageList[$pageName]; return new When("I am on \"$page\""); }

/** * @Then /^I should see "([^"]*)" in the "([^"]*)"$/ */ public function iShouldSeeInThe($text, $element) { if(!isset($this->elementList[$element])) { throw new Exception( 'Element: ' . $element . ‘not in element list'); } $element = $this->elementList[$element]; return new Then("I should see \"$text\" in then\"$element\" element"); }

Javascript Testing with.....

Back To: My Amazing PHP Conference

Website!

@javascriptScenario: Use autocomplete functionality to complete a input field Given there is conference data in the database When I am on the "home" page When I fill in "search-text" with "PHP" And I wait for the suggestion box to appear Then I should see "PHPNW"

Example

@javascriptScenario: Use autocomplete functionality to complete a input field Given there is conference data in the database When I am on the "home" page When I fill in "search-text" with "PHP" And I wait for the suggestion box to appear Then I should see "PHPNW"

Great Reuse

// In the UIContext class /**

* @Given /^I wait for the suggestion box to appear$/ */ public function iWaitForTheSuggestionBoxToAppear() { $this->getSession()->wait(5000, "$('.suggestions-results').children().length > 0" ); }

SQL Fixture

Phabric

Inserting Data From Gherkin Tables

INSERT INTO event `Name`, `Date`, `Venue`, `Desc`VALUE(‘PHPNW’, ‘2011-10-08 09:00’, ‘Ramada Hotel’, ‘Awesome Conf!’)

Phabric

Transforming Table Headings to DB col names

INSERT INTO event `name`, `date`, `venue`, `description`VALUE(‘PHPNW’, ‘2011-10-08 09:00’, ‘Ramada Hotel’, ‘Awesome Conf!’)

Phabric

Transforming Table data using user defined callbacks

INSERT INTO event `name`, `date`, `venue`, `description`VALUE(‘PHPNW’, ‘2011-10-08 09:00’, ‘Ramada Hotel’, ‘Awesome Conf!’)

PhabricInserting Relational Data

Back To Our Problem At Sky

Balance.

A whole world of trouble.

Questions?

Behat Github Page: https://github.com/Behat/Behat

Mink On Github: https://github.com/Behat/Mink

Website: http://behat.org/

Phabric On Github: https://github.com/benwaine/Phabric

joind.in: http://joind.in/3592 Sunday, 9 October 11

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