How to make your clients happy with BDD

Talk about role of narrative in BDD *.features

Transcript

1. using BDD How to make your clients happy
2. AM who i @everzet senior from-birth web developer in
3. Agile mentor in KnpLabs since 2011 BDD evangelist Creator of Behat, Mink Contributor to Symfony2 framework everzet@knplabs.com http://github.com/everzet http://card.everzet.com AM who i @everzet senior from-birth web developer in
4. What’s our primary job ?
5. to make our clients happy !
6. Current state:
7. more awesome languages
8. more awesome frameworks
9. more awesome developers http://www.flickr.com/photos/officialgdc/4421337520
10. clients happiness = ?
12. clients happiness =valuable product
13. awesome languages ≠valuable product
14. awesome languages frameworks ≠valuable product
15. awesome languages frameworks developers ≠valuable product
16. awesome valuable ≉
17. = valuable product
18. popular = valuable product
19. popular useful = valuable product
20. popular useful profitable = valuable product
21. BUT
22. How to bring value into client product ?
23. especially, when client doesn’t know that he needs it
24. By asking
25. http://www.flickr.com/photos/brendio/71252025
26. Client wants internationalization?
27. http://www.flickr.com/photos/editor/6698208975
28. Client wants authorization?
29. http://www.flickr.com/photos/quinnanya/3588989219
30. Client wants this new shiny awesome feature?
31. Well, you got it....
32. COMMUNICATIONS photo by joshfassbind.com
33. How does it helps?
34. Correct answers to WHY? helps you to bring higher priority on things, that really matter
35. How does the correct answer looks like? WHY?
37. Correct WHY? answer should point out:
38. Correct WHY? answer should point out: • Added value of the feature
39. Correct WHY? answer should point out: • Added value of the feature • Benefitiar of the feature
40. In order to see top users
41. In order to see top users As a visitor
42. In order to see top users As a visitor I need to be able to sort them by rating
43. In order to see top users As a visitor I need to be able to sort them by rating
44. In order to get latest news As a visitor I need to be able to see last 3 articles on homepage In order to see top users As a visitor I need to be able to sort them by rating
45. In order to spend my money As a user I need to be able to buy rating on site In order to get latest news As a visitor I need to be able to see last 3 articles on homepage In order to see top users As a visitor I need to be able to sort them by rating
46. X - the benefit or value of the feature Y - the person (or role) who will benefit Z - some feature In order to [X] As a [Y] I need [Z] Its strength is that it forces you to identify the value of delivering a story when you first define it. © Dan North ❤ of BDD
47. In order to spend my money As a user I need to be able to buy rating on site In order to get latest news As a visitor I need to be able to see last 3 articles on homepage In order to see top users As a visitor I need to be able to sort them by rating
48. 2 1 3 In order to spend my money As a user I need to be able to buy rating on site In order to get latest news As a visitor I need to be able to see last 3 articles on homepage In order to see top users As a visitor I need to be able to sort them by rating define priorities
49. In order to [X] As a [Y] I need [Z]
50. Hey, it looks like a user story!
51. In order to [X] As a [Y] I need [Z] UserStory: it IS
52. Given some initial context (the givens), When an event occurs, Then ensure some outcomes. In order to [X] As a [Y] I need [Z] UserStory:
53. Given some initial context (the givens), When an event occurs, Then ensure some outcomes. In order to [X] As a [Y] I need [Z] Given some initial context (the givens), When an event occurs, Then ensure some outcomes. UserStory:
54. In order to [X] As a [Y] I need [Z] Scenario 1: Scenario 2: 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. UserStory:
55. A story’s behaviour is simply its acceptance criteria! - if the system fulfills all the acceptance criteria, it’s behaving correctly; if it doesn’t, it isn’t.
56. Acceptance criteria could be automated!
58. In order to ... As a ... I need ... Scenario: 1st scenario title Scenario: 2nd scenario title Feature: Feature description 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
59. 1. feature 2. scenario 3. step ... ... 2. scenario 3. step ... ... Given some initial context (the givens) When an event occurs Then ensure some outcomes In order to ... As a ... I need ... Given some initial context (the givens) When an event occurs Then ensure some outcomes Scenario: 1st scenario title Scenario: 2nd scenario title Feature: Feature description feature tree
60. <?php $steps->Given('/^I have a bank account$/', function($world) { $world->account = new BankAccount(); } ); Given I have a bank account
61. <?php $steps->Given('/^I have a bank account$/', function($world) { $world->account = new BankAccount(); } ); <?php $steps->When('/^I deposit (\d+)\$$/', function($world, $dollars) { $world->account->deposit($dollars); } ); Given I have a bank account When I deposit 35$
62. Then I should have 35$
63. 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!'); } } );
64. <?php $steps->Given('/^I have a bank account$/', function($world) { $world->account = new BankAccount(); } ); $steps->When('/^I deposit (\d+)\$$/', function($world, $dollars) { $world->account->deposit($dollars); } ); $steps->Then('/^I should have (\d+)\$$/', function($world, $balance) { assertEquals($balance, $world->account->getBalance()); } );
65. Feature: User logins
66. In order to have extended abilities As a site user I need to be able to login Feature: User logins
67. 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
68. 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
69. 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” 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 “someone” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Login or password is incorrect” Scenario: Non-existing user can’t login Feature: User logins
70. 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” 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 “someone” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Login or password is incorrect” Scenario: Non-existing user can’t login Feature: User logins
71. 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” 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 “someone” And I fill in “password” with “qwerty” And I press “login” in login form Then I should see “Login or password is incorrect” Scenario: Non-existing user can’t login Feature: User logins
72. 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” 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 Background: 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” Scenario: Non-existing user can’t login Feature: User logins
73. 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” 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 users: Background: 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” Scenario: Non-existing user can’t login | username | password | | everzet | qwerty | Feature: User logins
74. 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>” In order to have extended abilities As a site user I need to be able to login Scenario Outline: Only existing users can login Given a site have users: Background: | username | password | | everzet | qwerty | Feature: User logins
75. 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>” In order to have extended abilities As a site user I need to be able to login Scenario Outline: Only existing users can login Given a site have users: Background: | username | password | | everzet | qwerty | Examples: Feature: User logins
76. 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>” In order to have extended abilities As a site user I need to be able to login Scenario Outline: Only existing users can login Feature: User logins Given a site have users: Background: | username | password | | everzet | qwerty | Examples: | username | password | message | | everzet | qwerty | Welcome, everzet | | someone | pa$$word | Login or password is incorrect |
77. In-browser testing and frameworks support
78. Sahi Goutte Selenium sfBrowser Symfony2 Client
79. Sahi Goutte Selenium sfBrowser Symfony2 Client through one clean API
80. M!"#
81. Given I am on the “/login” page When I fill in “username” with “<username>” And I fill in “password” with “<password>” And I press “login” in login form Then I should see “<message>” In order to have extended abilities As a site user I need to be able to login Scenario Outline: Only existing users can login Feature: User logins Given a site have users: Background: | username | password | | everzet | qwerty | Examples: | username | password | message | | everzet | qwerty | Welcome, everzet | | someone | pa$$word | Login or password is incorrect |
82. 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>” In order to have extended abilities As a site user I need to be able to login Scenario Outline: Only existing users can login Feature: User logins Given a site have users: Background: | username | password | | everzet | qwerty | Examples: | username | password | message | | everzet | qwerty | Welcome, everzet | | someone | pa$$word | Login or password is incorrect | @javascript
83. Questions?