BDD in Symfony2

BDD with Symfony2

Iwho am everzet senior from-birth PHP developer at

TIMELINE UnitTest Test code automatically

TDD Write tests firstTIMELINE UnitTest Test code automatically

BDD Dan North TDD Write tests firstTIMELINE UnitTest Test code automatically

BDD ❿evolution of TDD

- Oh, man, i hate evolutions! What’s wrong with TDD?

Test-Driven Development- Oh, man, i hate evolutions! What’s wrong with TDD?

Are we really talking about tests??? But how to test something, that not exists yet? Test-Driven Development- Oh, man, i hate evolutions! What’s wrong with TDD?

In reality, we’re talking bout software design Test-Driven Development - Oh, man, i hate evolutions! What’s wrong with TDD?

BDD was introduced as set of conventions over TDD

BDD was introduced as set of conventions over TDDTest method names should be sentencestestFindsCustomerById() ❿ tests, that class ﬁnds customer by IDtestFailsForDuplicateCustomers() ❿tests, that class fails for dup customers

BDD was introduced as set of conventions over TDDTest method names should be sentencestestFindsCustomerById() ❿ tests, that class ﬁnds customer by IDtestFailsForDuplicateCustomers() ❿tests, that class fails for dup customersTest method names should start with “should” wordshouldFindCustomerById() ❿ class should ﬁnd customer by IDshouldFailForDuplicateCustomers() ❿class should fail for dup customers

BDD was introduced as set of conventions over TDDTest method names should be sentencestestFindsCustomerById() ❿ tests, that class finds customer by IDtestFailsForDuplicateCustomers() ❿tests, that class fails for dup customersTest method names should start with “should” wordshouldFindCustomerById() ❿ class should find customer by IDshouldFailForDuplicateCustomers() ❿class should fail for dup customersTestCase class should be nouns in test method sentencesclass CustomerTableTest extends PHPUnitTestCase{ /** * @Test */ shouldFindCustomerById() ❿ CustomerTable should find customer by ID ...}

ASSERTIONS are TEST-oriented too TESTing assertEquals($expected, $actual)assertGreaterThan($expected, $actual) assertInstanceOf($class, $actual)

ASSERTIONS are TEST-oriented too TESTing Describing assertEquals($expected, $actual) $actual should be Equals to $expectedassertGreaterThan($expected, $actual) $actual should be GreaterThan $expected assertInstanceOf($class, $actual) $actual should be InstanceOf $class

Design first Spec BDD BDD Dan North TDD Write tests firstTIMELINE UnitTest Test code automatically

Speciﬁcation-oriented BDD Frameworks

*Spec RSpec by Dave Astels

*Spec RSpec by Dave Astels JSpec by TJ Holowaychuk

*Spec RSpec by Dave Astels JSpec by TJ Holowaychuk Fabulous by Alex Rudakov

RSpec # bowling_spec.rb require bowling describe Bowling, "#score" do it "returns 0 for all gutter game" do bowling = Bowling.new 20.times { bowling.hit(0) } bowling.score.should == 0 end end

RSpec # bowling_spec.rb require bowling describe Bowling, "#score" do it "returns 0 for all gutter game" do bowling = Bowling.new 20.times { bowling.hit(0) } bowling.score.should == 0 end end Write class SPECIFICATION, not UnitTEST

SCENARIOORIENTEDBDD photo by dsearls

VOCABULARY photophoto by dsearls by Horia Varlan

e rs e st r t foVOCABULARY photophoto by dsearls by Horia Varlan

e rs e st r t foVOCABULARY f ora na ly st s photophoto by dsearls by Horia Varlan

e rs e st r t fo VOCABULARY f rs ora pe na lo e ve ly d stfor s photophoto by dsearls by Horia Varlan

for rs bu e sin e st ess r t fo VOCABULARY f rs ora pe na lo e ve ly d stfor s photophoto by dsearls by Horia Varlan

for rs bu e st 1 sin e ess r t fo VOCABULARY f rs ora pe na lo e ve ly d stfor s photophoto by dsearls by Horia Varlan

ELIMINATING some of the AMBIGUITY and MISCOMMUNICATION testersbusiness developers VOCABULARY analysts photophoto by dsearls by Horia Varlan

MU NICATIONSCOM photo by joshfassbind.com

Story: In order to [A] As a [B] I need [C]

Story: In order to [A] As a [B] I need [C] A ❿ benefit or value of the feature the B ❿ person (or role) who will benefit the C❿some feature

Story: In order to [A] ❿ strength is that it forces you to Its As a [B] identify the value of delivering a story when you first define it. I need [C] © Dan North A ❿ benefit or value of the feature the B ❿ person (or role) who will benefit the C❿some feature

Story: A story’s behaviour is simply its acceptance criteria! ❿ the system fulfills all the acceptance if criteria, it’s behaving correctly; if it doesn’t, it isn’t.

Story:In order to ...As a ...I need ...

Story:In order to ...As a ...I need ... Given some initial context (the givens), When an event occurs, Then ensure some outcomes.

Story:In order to ...As a ...I need ... Given some initial context (the givens), When an event occurs, Then ensure some outcomes. Given some initial context (the givens), When an event occurs, Then ensure some outcomes.

Story:In order to ...As a ...I need ... Scenario 1: Given some initial context (the givens), When an event occurs, Then ensure some outcomes. Scenario 2: Given some initial context (the givens), When an event occurs, Then ensure some outcomes.

Scenario BDD Design first Spec BDD Analyse first BDD Dan North TDD Write tests firstTIMELINE UnitTest Test code automatically

GHERKINDSL photo by isobel.gordon

Story:In order to ...As a ...I need ... Scenario 1: Given some initial context (the givens), When an event occurs, Then ensure some outcomes. Scenario 2: Given some initial context (the givens), When an event occurs, Then ensure some outcomes.

Feature: Feature descriptionIn order to ...As a ...I need ... Scenario: 1st scenario title Given some initial context (the givens) When an event occurs Then ensure some outcomes Scenario: 2nd scenario title Given some initial context (the givens) When an event occurs Then ensure some outcomes

# language: frFonctionnalité: Feature descriptionIn order to ...As a ...I need ... Scénario: 1st scenario title Etant donné some initial context (the givens) Lorsque an event occurs Alors ensure some outcomes Scénario: 2nd scenario title Etant donné some initial context (the givens) Lorsque an event occurs Alors ensure some outcomes

# language: ja : Feature descriptionIn order to ...As a ...I need ... : 1st scenario title some initial context (the givens) an event occurs ensure some outcomes : 2nd scenario title some initial context (the givens) an event occurs ensure some outcomes

# language: ruФункционал: Feature descriptionIn order to ...As a ...I need ... Сценарий: 1st scenario title Допустим some initial context (the givens) Когда an event occurs То ensure some outcomes Сценарий: 2nd scenario title Допустим some initial context (the givens) Когда an event occurs То ensure some outcomes

# language: en-pirateAhoy matey!: Feature descriptionIn order to ...As a ...I need ... Heave to: 1st scenario title Let go and haul some initial context (the givens) Blimey! an event occurs Aye ensure some outcomes Heave to: 2nd scenario title Let go and haul some initial context (the givens) Blimey! an event occurs Aye ensure some outcomes

# language: en-pirateAhoy matey!: Heave to: Let go and haul some initial context (the givens) Blimey! an event occurs Aye ensure some outcomes Heave to: Let go and haul some initial context (the givens) Blimey! an event occurs Aye ensure some outcomes

Acceptance criteria should be executable!

Feature: Feature descriptionIn order to ...As a ...I need ... Scenario: 1st scenario title Given some initial context (the givens) When an event occurs Then ensure some outcomes Scenario: 2nd scenario title Given some initial context (the givens) When an event occurs Then ensure some outcomes

feature treeFeature: Feature description 1. featureIn order to ...As a ...I need ... Scenario: 1st scenario title2. scenario Given some initial context (the givens) 3. step When an event occurs ... Then ensure some outcomes ... Scenario: 2nd scenario title2. scenario Given some initial context (the givens) 3. step When an event occurs ... Then ensure some outcomes ...

STEP DEFINITIONS Given I have a bank account

STEP DEFINITIONS Given I have a bank account <?php Given(/^I have a bank account$/);

STEP DEFINITIONS Given I have a bank account <?php Given(/^I have a bank account$/, function() { throw new BehatBehatExceptionPending(); } );

STEP DEFINITIONS Given I have a bank account <?php $steps->Given(/^I have a bank account$/, function() { throw new BehatBehatExceptionPending(); } );

STEP DEFINITIONS Given I have a bank account <?php $steps->Given(/^I have a bank account$/, function() { throw new BehatBehatExceptionPending(); ??? } );

STEP RESULT TYPES1. Pending step ❿that throw new BehatBehatExceptionPending();

STEP RESULT TYPES1. Pending step ❿that throw new BehatBehatExceptionPending();2. Undeﬁned step ❿that have no deﬁnitions (found)

STEP RESULT TYPES1. Pending step ❿that throw new BehatBehatExceptionPending();2. Undefined step ❿that have no definitions (found)3. Ambiguous step ❿which match multiple definitions

STEP RESULT TYPES1. Pending step ❿that throw new BehatBehatExceptionPending();2. Undefined step ❿that have no definitions (found)3. Ambiguous step ❿which match multiple definitions4. Failed step ❿that throw Exception();

STEP RESULT TYPES1. Pending step ❿that throw new BehatBehatExceptionPending();2. Undefined step ❿that have no definitions (found)3. Ambiguous step ❿which match multiple definitions4. Failed step ❿that throw Exception();5. Skipped step ❿that follows pending/undefined/failed

STEP RESULT TYPES1. Pending step ❿that throw new BehatBehatExceptionPending();2. Undefined step ❿that have no definitions (found)3. Ambiguous step ❿which match multiple definitions4. Failed step ❿that throw Exception();5. Skipped step ❿that follows pending/undefined/failed6. Passed step ❿that doesn’t throw exceptions

STEP DEFINITIONS Given I have a bank account <?php $steps->Given(/^I have a bank account$/, function() { throw new BehatBehatExceptionPending(); } );

STEP DEFINITIONS Given I have a bank account <?php $steps->Given(/^I have a bank account$/, function() { throw new BehatBehatExceptionPending(); } ); When I deposit 35$

STEP DEFINITIONS Given I have a bank account <?php $steps->Given(/^I have a bank account$/, function() { throw new BehatBehatExceptionPending(); } ); When I deposit 35$ <?php $steps->When(/^I deposit (d+)$$/, function($dollars) { // $dollars === 35 } );

STEP DEFINITIONS Given I have a bank account <?php $steps->Given(/^I have a bank account$/, function($world) { throw new BehatBehatExceptionPending(); } ); When I deposit 35$ <?php $steps->When(/^I deposit (d+)$$/, function($world, $dollars) { // $dollars === 35 } );

STEP DEFINITIONS Given I have a bank account <?php $steps->Given(/^I have a bank account$/, function($world) { $world->account = new BankAccount(); } ); When I deposit 35$ <?php $steps->When(/^I deposit (d+)$$/, function($world, $dollars) { $world->account->deposit($dollars); } );

TESTING OUTCOME Then I should have 35$

TESTING OUTCOME Then I should have 35$ <?php $steps->Then(/^I should have (d+)$$/, function($world, $balance) { if ($balance !== $world->account->getBalance()) { throw new Exception(Wrong balance!); } } );

TESTING OUTCOME Then I should have 35$ <?php $steps->Then(/^I should have (d+)$$/, function($world, $balance) { if ($balance !== $world->account->getBalance()) { throw new Exception(Wrong balance!); } } ); Then I should have 35$ ( using PHPUnit ) <?php $steps->Then(/^I should have (d+)$$/, function($world, $balance) { assertEquals($balance, $world->account->getBalance()); } );

STEP DEFINITIONS <?php $steps->Given(/Î have a bank account$/, function($world) { $world->account = new BankAccount(); } ); $steps->When(/Î deposit (d+)$$/, function($world, $dollars) { $world->account->deposit($dollars); } ); $steps->Then(/Î should have (d+)$$/, function($world, $balance) { assertEquals($balance, $world->account->getBalance()); } );

STEP DEFINITIONS <?php $steps-> Given(/Î have a bank account$/, function($world) { $world->account = new BankAccount(); } )-> When(/Î deposit (d+)$$/, function($world, $dollars) { $world->account->deposit($dollars); } )-> Then(/Î should have (d+)$$/, function($world, $balance) { assertEquals($balance, $world->account->getBalance()); } );

d le un atB e hB

BehatBundle USAGE 1. Install: http://symfony2bundles.org/Behat/BehatBundle

BehatBundle USAGE 1. Install: http://symfony2bundles.org/Behat/BehatBundle 2. Setup: $ app/console behat:test:bundle --init ApplicationHelloBundle . src/Application/HelloBundle/Tests/Features ❿write and put your features here steps ❿place step definition files here steps.php ❿example step definition file support ❿place support scripts here bootstrap.php ❿bootstrap env.php ❿environment (context) initialization

BehatBundle USAGE 1. Install: http://symfony2bundles.org/Behat/BehatBundle 2. Setup: $ app/console behat:test:bundle --init ApplicationHelloBundle . src/Application/HelloBundle/Tests/Features ❿write and put your features here steps ❿place step definition files here steps.php ❿example step definition file support ❿place support scripts here bootstrap.php ❿bootstrap env.php ❿environment (context) initialization 3. Colorize: $ app/console behat:test:bundle ApplicationHelloBundle

BUNDLEDSteps

BUNDLEDSteps Browser Steps Given /Î am on(?: the)? (.*)$/ When /Î go to(?: the)? (.*)$/ When /Î (?:follow|click)(?: the)? "([^"]*)"(?: link)*$/ When /Î go back$/ When /Î go forward$/ When /Î send (POST|PUT|DELETE) to (.*) with:$/ When /Î follow redirect$/

BUNDLEDSteps Browser Steps Given /Î am on(?: the)? (.*)$/ When /Î go to(?: the)? (.*)$/ When /Î (?:follow|click)(?: the)? "([^"]*)"(?: link)*$/ When /Î go back$/ When /Î go forward$/ When /Î send (POST|PUT|DELETE) to (.*) with:$/ When /Î follow redirect$/ Form Steps When /Î fill in "([^"]*)" with "([^"]*)"$/ When /Î select "([^"]*)" from "([^"]*)"$/ When /Î uncheck "([^"]*)"$/ When /Î uncheck "([^"]*)"$/ When /Î attach the file at "([^"]*)" to "([^"]*)"$/ When /Î press "([^"]*)" in (.*) form$/

BUNDLEDSteps Request Steps Then /^Request method is (.*)$/ Then /^Request has cookie "([^"]*)"$/ Then /^Request has not cookie "([^"]*)"$/ Then /^Request cookie "([^"]*)" is "([^"]*)"$/

BUNDLEDSteps Request Steps Then /^Request method is (.*)$/ Then /^Request has cookie "([^"]*)"$/ Then /^Request has not cookie "([^"]*)"$/ Then /^Request cookie "([^"]*)" is "([^"]*)"$/ Response Steps Then /^Response status code is (d+)$/ Then /Î should see "([^"]*)"$/ Then /Î should not see "([^"]*)"$/ Then /Î should see element "([^"]*)"$/ Then /^Header "([^"]*)" is set to "([^"]*)"$/ Then /^Header "([^"]*)" is not set to "([^"]*)"$/ Then /Î was redirected$/ Then /Î was not redirected$/ Then /^Print output$/

Feature: User logins

Feature: User logins In order to have extended abilities As a site user I need to be able to login

Feature: User logins In order to have extended abilities As a site user I need to be able to login Scenario: Existing user can login

Feature: User logins In order to have extended abilities As a site user I need to be able to login Scenario: Existing user can login Scenario: Non-existing user can’t login

Feature: User logins In order to have extended abilities As a site user I need to be able to login Scenario: Existing user can login Given a site have “everzet” user with “qwerty” password And I am on the “/login” When I fill in “username” with “everzet” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Welcome, everzet” Scenario: Non-existing user can’t login Given a site have “everzet” user with “qwerty” password And I am on the “/login” When I fill in “username” with “someone” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Login or password is incorrect”

Feature: User logins In order to have extended abilities As a site user I need to be able to login Scenario: Existing user can login Given I am on the “/login” page When I fill in “username” with “everzet” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Welcome, everzet” Scenario: Non-existing user can’t login Given I am on the “/login” page When I fill in “username” with “someone” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Login or password is incorrect”

Feature: User logins In order to have extended abilities As a site user I need to be able to login Background: Given a site have “everzet” user with “qwerty” password Scenario: Existing user can login Given I am on the “/login” page When I fill in “username” with “everzet” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Welcome, everzet” Scenario: Non-existing user can’t login Given I am on the “/login” page When I fill in “username” with “someone” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Login or password is incorrect”

Feature: User logins In order to have extended abilities As a site user I need to be able to login Background: Given a site have users: | username | password | | everzet | qwerty | Scenario: Existing user can login Given I am on the “/login” page When I fill in “username” with “everzet” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Welcome, everzet” Scenario: Non-existing user can’t login Given I am on the “/login” page When I fill in “username” with “someone” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Login or password is incorrect”

Feature: User logins In order to have extended abilities As a site user I need to be able to login Background: Given a site have users: | username | password | | everzet | qwerty | Scenario Outline: Only existing users can login Given I am on the “/login” page When I fill in “username” with “<username>” And I fill in “password” with “<password>” And I press “login” in login form Then I should see “<message>”

Feature: User logins In order to have extended abilities As a site user I need to be able to login Background: Given a site have users: | username | password | | everzet | qwerty | Scenario Outline: Only existing users can login Given I am on the “/login” page When I fill in “username” with “<username>” And I fill in “password” with “<password>” And I press “login” in login form Then I should see “<message>” Examples:

USAGE 1. Colorize: $ app/console behat:test:bundle ApplicationHelloBundle

USAGE 1. Colorize: $ app/console behat:test:bundle ApplicationHelloBundle 2. Write missing steps: <?php $steps->Given(/^a site have users:$/, function($world, $table) { $em = $world->getClient()-> getKernel()-> getContainer()-> get(doctrine.orm.entity_manager); // remove all users from test db with EntityManager foreach ($table->getRowHash() as $row) { // persist new user into test db with EntityManager // $row[‘username’] AND $row[‘password’] } $em->flush(); });

One more thing http://Behat.org

In-browser testing andother frameworks support

SahiGoutte

SahiGoutteSelenium

SahiGoutteSeleniumsfBrowser

SahiGoutteSeleniumsfBrowserSymfony2 Client

SahiGoutteSeleniumsfBrowserSymfony2 Client through one clean API

<?php// src/Sensio/HelloBundle/Tests/Controller/HelloControllerTest.phpnamespace SensioHelloBundleTestsController;use SymfonyBundleFrameworkBundleTestWebTestCase;use BehatMink;class HelloControllerTest extends WebTestCase{ public function testIndexWithSymfony2Client() { $client = $this->createClient(); $driver = new MinkDriverSymfony2ClientDriver($client); $session = new MinkSession($driver); $session->visit(/hello/Fabien); $page = $session->getPage(); $this->assertTrue($page->hasContent(Hello Fabien)); } public function testIndexWithSahi() { $driver = new MinkDriverSahiDriver(SAHI_SESSION_ID); $session = new MinkSession($driver); $session->visit(/hello/Fabien); $page = $session->getPage(); $this->assertTrue($page->hasContent(Hello Fabien)); }}

http://Behat.orgQuestions?http://joind.in/2769

http://www.lafermeduweb.net	1699
http://blogdwich.fr	135
http://www.symfony.es	111
http://coderwall.com	44
http://pocky.github.com	31
http://translate.googleusercontent.com	6
http://paper.li	5
http://static.slidesharecdn.com	4
http://twitter.com	4
http://www.emmanuelpereira.com	4
https://twitter.com	3
http://webcache.googleusercontent.com	2
http://www.sfexception.com	2
http://feeds.feedburner.com	2
http://livebuzz.com.br	1

BDD in Symfony2

by Konstantin Kudryashov on Mar 04, 2011

Accessibility

Categories

Tags

Upload Details

Usage Rights

15 Embeds 2,053

Statistics

BDD in Symfony2 — Presentation Transcript