Presentation for Liverpool Behat UG opening

Transcript

2. bdd
4. It is a tool to bring a structure into agile processes.
7. BDD
8. BDD is agile enabler.
9. is a BDD enabler
10. How?
11. Requirements Analysis Design Develop Test [Royce 1970] 9 months 3 months 2 months 12 months ...
12. Most of the cost in software development is in feedback delay
13. Let’s reduce feedback delay
14. [Beck & Cunningham 1996-99] Refactoring Code Test Requirements Acceptance
15. Let’s rename a few things
16. Incremental Design Implement Describe Object Narratives What do you mean [North 03]
17. Incremental Design Implement Describe Object Narratives What do you mean StoryBDD TDD
18. StoryBDD
19. StoryBDD could look like functional TDD to people from outside BDD community, but it’s a lie.
20. We are not testing that application functions as we (developers) expect it to, but instead we’re testing that it fullfils clients business needs.
21. Some applications could easily fullfill developers expectations and still not being able to cover business needs.
22. You might think about StoryBDD as a technique to teach your clients about testing, but in reality it's a tool to teach you about client business.
23. Exploration OF Domain area
24. 3 levels of domain exploration
25. 1 2 3 narrative possible scenarios scenario details
26. Feature: Authorization In order to get access to the shopping history As a frequent buyer I need to be able to authenticate 1 2 3 possible scenarios scenario details
27. Feature: Authorization In order to get access to the shopping history As a frequent buyer I need to be able to authenticate Scenario: Successfully authenticating with correct credentials 1 2 3 scenario details
28. Feature: Authorization In order to get access to the shopping history As a frequent buyer I need to be able to authenticate Scenario: Successfully authenticating with correct credentials Given there is a user “everzet” with password “123” And I am on the login page When I fill in “username” with “everzet” And I fill in “password” with “123” And I press “login” Then I should see “Hello, everzet” 1 2 3
29. Feature: Authorization In order to get access to the shopping history As a frequent buyer I need to be able to authenticate Scenario: Successfully authenticating with correct credentials Scenario: Can not authenticate with wrong credentials Scenario: Blocked user can not authenticate, even with correct credentials
30. Feature: Authorization In order to get access to the shopping history As a frequent buyer I need to be able to authenticate user story =>
31. StoryBDD helps ensuring that development team has understanding of business on the same level that client does
32. StoryBDD helps ensuring that development team has understanding of business on the same level that client does And even leveling up client knowledge of his business
33. How?
34. by Forcing you business questions to answer
35. 1. For who?
36. 1. For who? 2. What?
37. 1. For who? 2. What? 3. How?
38. 1. For who? 2. What? 3. How? Why?
39. example Registration
40. ” I want visitors to be able to register on my website through simple registration form. Your hypothetical client
41. 1.Who?
42. 1.Who? users?
43. 1.Who? users visitors
44. 1.Who? users visitors 2.Why?
45. 1.Who? users visitors 2.Why? it’s common?
46. 1.Who? users visitors 2.Why? it’s common buyings history
47. Know your client clients!
48. in order to maintain my shopping history as a site visitor i need to be able to register on this site
49. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration
50. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration benefit role (benefitiar)
51. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration benefit role (benefitiar) in order to ... as a ... i need to ... Feature: ... benefit role (benefitiar) in order to ... as a ... i need to ... Feature: ... benefit role (benefitiar) in order to ... as a ... i need to ... Feature: ... benefit role (benefitiar)
52. in order to ... as a ... i need to ... Feature: ... benefit role (benefitiar) in order to ... as a ... i need to ... Feature: ... benefit role (benefitiar) in order to ... as a ... i need to ... Feature: ... benefit role (benefitiar) in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration benefit role (benefitiar) SELECT f.* FROM ‘/features’ as f ORDER BY f.role, f.benefit LIMIT 10 PSEUDOAgileQL
53. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration
54. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration Scenario: Successful registration when visitor provides all the required info
55. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration Scenario: Successful registration when visitor provides all the required info Scenario: Unable to register when visitor misses required info
56. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration Scenario: Successful registration when visitor provides all the required info Scenario: Unable to register when visitor misses required info Scenario: ...
57. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration Scenario: Successful registration when visitor provides all the required info Scenario: Unable to register when visitor misses required info Scenario: ... Scenario: ... Scenario: ... Scenario: ... Scenario: ...
58. in order to maintain my shopping history as a site visitor i need to be able to register on this site Feature: registration Scenario: Successful registration when visitor provides all the required info Given I am on homepage And I follow “sign up” When I fill in “email” with “linkedin@example.com” And I fill in “username” with “linkedin” And I fill in “password” with “sha1_without_salt” And I press “register” Then I should see “You have been successfully registered” And I should be on homepage
60. $> vim composer.json { “require-dev”: { “behat/behat”: “~2.4.5”, }, “config”: { “bin-dir”: “bin/” } } $> curl http://getcomposer.org/installer | php $> php composer.phar install --dev
61. $> bin/behat --init +d features +d features/bootstrap +f features/bootstrap/FeatureContext.php
62. <?php use Behat\Behat\Context\ClosuredContextInterface, Behat\Behat\Context\TranslatedContextInterface, Behat\Behat\Context\BehatContext, Behat\Behat\Exception\PendingException; use Behat\Gherkin\Node\PyStringNode, Behat\Gherkin\Node\TableNode; class FeatureContext extends BehatContext { public function __construct(array $parameters) { // Initialize your context here } }
63. $> bin/behat ... You can implement step definitions for undefined steps with these snippets: /** * @When /^I fill in “([^”]+)” with “([^”]+)”$/ */ public function iFillInWith($val1, $val2) { throw new PendingException(); } ...
64. $> bin/behat ... You can implement step definitions for undefined steps with these snippets: /** * @When /^I fill in “([^”]+)” with “([^”]+)”$/ */ public function iFillInWith($val1, $val2) { throw new PendingException(); } ...
65. $> bin/behat --append-snippets
66. /** * @Given /^I am on homepage$/ */ public function iAmOnHomepage() { throw new PendingException(); } /** * @Given /^I follow “sign up”$/ */ public function iFollowSignUp() { throw new PendingException(); } /** * @When /^I fill in “([^”]+)” with “([^”]+)”$/ */ public function iFillInWith($val1, $val2) { throw new PendingException(); }
67. $> bin/behat Feature: registration in order to maintain my shopping history as a site visitor i need to be able to register on this site Scenario: Successful registration when visitor provides all the required info Given I am on homepage TODO: write pending definition And I follow “sign up” When I fill in “email” with “linkedin@example.com” And I fill in “username” with “linkedin” And I fill in “password” with “sha1_without_salt” And I press “register” Then I should see “You have been successfully registered” And I should be on homepage 1 scenario (1 pending) 8 steps (7 skipped, 1 pending) 0m0.015s
68. /** * @Given /^I am on homepage$/ */ public function iAmOnHomepage() { $crawler = new \Some\Crawler\Lib\Crawler(); $crawler->goto(“http://localhost:8080/”); if (200 !== $crawler->getCurrentStatusCode()) { throw new \RuntimeException(‘Can not open homepage’); } }
69. $> bin/behat Feature: registration in order to maintain my shopping history as a site visitor i need to be able to register on this site Scenario: Successful registration when visitor provides all the required info Given I am on homepage Can not open homepage And I follow “sign up” When I fill in “email” with “linkedin@example.com” And I fill in “username” with “linkedin” And I fill in “password” with “sha1_without_salt” And I press “register” Then I should see “You have been successfully registered” And I should be on homepage 1 scenario (1 failed) 8 steps (7 skipped, 1 failed) 0m0.015s
70. $> vim src/
71. Incremental Design Implement Describe Object Narratives What do you mean StoryBDD TDD
72. $> bin/behat Feature: registration in order to maintain my shopping history as a site visitor i need to be able to register on this site Scenario: Successful registration when visitor provides all the required info Given I am on homepage And I follow “sign up” TODO: write pending definition When I fill in “email” with “linkedin@example.com” And I fill in “username” with “linkedin” And I fill in “password” with “sha1_without_salt” And I press “register” Then I should see “You have been successfully registered” And I should be on homepage 1 scenario (1 pending) 8 steps (1 passed, 1 pending, 6 skipped) 0m0.015s