SPUG Meetup #4 13/06/2013 https://domaincentric.net/

1. SPEC BDD
IN PHP
@cakper

2. 13/06/13 GliwiceSpec BDD IN PHP
Software Engineer @SensioLabsUK
Silesia PHP User Group // Spug.pl
#symfony-pl // Symfonylab.pl
@CAKPER

3. 13/06/13 GliwiceSpec BDD IN PHP
WHAT IS TEST?

4. 13/06/13 GliwiceSpec BDD IN PHP
WHY DO WE TEST?

5. 13/06/13 GliwiceSpec BDD IN PHP
HOW DO WE TEST?

6. 13/06/13 GliwiceSpec BDD IN PHP
WE MAKE MISTAKES
SO WE HAVE TO TEST

7. 13/06/13 GliwiceSpec BDD IN PHP
TEST
DRIVEN
DEVELOPMENT
Kent Beck // 2003
Extreme Programming // 1999

8. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #1
How to test something that
does not exist?

9. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #1
TEST == Specification
Driven
Development

10. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #1
Communication
is our ProblemNot testing itself

11. 13/06/13 GliwiceSpec BDD IN PHP
BEHAVIOUR
DRIVEN
DEVELOPMENT
Dan North // 2006

12. 13/06/13 GliwiceSpec BDD IN PHP
BDD
Naming
ConvenTions
tools
Better
{

13. 13/06/13 GliwiceSpec BDD IN PHP
BDD
= TDD v2.0‘TDD DONE RIGHT’

14. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #2
Writing specifications
takes time
Time is a cost

15. 13/06/13 GliwiceSpec BDD IN PHP
you can learn it

16. 13/06/13 GliwiceSpec BDD IN PHP
DELIBERATE PRACTICE
Pair Programming
Code Kata
Code Club
Code Retreat

17. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #3
Why are you sure that your
test is correct?

18. 13/06/13 GliwiceSpec BDD IN PHP
TDD CYCLE
RED
GREENREFACTOR

19. 13/06/13 GliwiceSpec BDD IN PHP
3 LAWS OF TDD
1.You are not allowed to write any production
code unless it is to make a failing unit test pass.
2.You are not allowed to write any more of a unit
test than is sufficient to fail; and compilation
failures are failures.
3.You are not allowed to write any more
production code than is sufficient to pass the one
failing unit test.

20. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #4
When and how to Refactor?

21. 13/06/13 GliwiceSpec BDD IN PHP
‘Refactoring w/o tests
= Refucktoring’
PROBLEM #4

22. 13/06/13 GliwiceSpec BDD IN PHP
4 RULES OF SIMPLE DESING
1.Passes all the tests.
2.Express every idea we need to express.
3.Contains no duplication.
4.Minimized the number of classes,
methods and other moving parts.

23. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #5
How to test dependencies?

24. 13/06/13 GliwiceSpec BDD IN PHP
DO NOT TEST...

25. 13/06/13 GliwiceSpec BDD IN PHP
TEST DOUBLES
DUMMies
STUBS
MOCKS
SPIES

26. 13/06/13 GliwiceSpec BDD IN PHP
Mocking should be easy
very easy

27. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #6
Code Coverage

28. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #6
Useful to
find dead code ;)

29. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #7
STORY BDD
vs
Spec BDD

30. 13/06/13 GliwiceSpec BDD IN PHP
STORY BDD
description of
business-targeted
application behavior

31. 13/06/13 GliwiceSpec BDD IN PHP
SPEC BDD
specification for
low-level implementation

32. 13/06/13 GliwiceSpec BDD IN PHP
PROBLEM #8
PHP UNIT
By Sebastian Bergmann©

33. 13/06/13 GliwiceSpec BDD IN PHP
PHP Spec 2

34. 13/06/13 GliwiceSpec BDD IN PHP
PHP SPEC 2
Framework Spec BDD
@_md & @everzet
Prophecy

35. 13/06/13 GliwiceSpec BDD IN PHP
PHP SPEC 2
EASY to use
TDD-Cycle oriented
Behaviour focused

36. 13/06/13 GliwiceSpec BDD IN PHP
PHP SPEC 2
Test Case
Specification

37. 13/06/13 GliwiceSpec BDD IN PHP
PHP SPEC 2
Test
example

38. 13/06/13 GliwiceSpec BDD IN PHP
PHP SPEC 2
Assert
Expectation

39. 13/06/13 GliwiceSpec BDD IN PHP
PHP SPEC 2
class MarkdownSpec extends ObjectBehavior
{
function it_is_initializable()
{
$this->shouldHaveType('Markdown');
}
}

40. 13/06/13 GliwiceSpec BDD IN PHP
MATCHERS
Identity (===):
shouldReturn()
shouldBe()
shouldEqual()
shouldBeEqualTo()

41. 13/06/13 GliwiceSpec BDD IN PHP
MATCHERS
Comparison (==):
shouldBeLike()

42. 13/06/13 GliwiceSpec BDD IN PHP
MATCHERS
Throw:
shouldThrow(‘Exception’)
->duringSomeMethod()

43. 13/06/13 GliwiceSpec BDD IN PHP
MATCHERS
Type:
shouldBeAnInstanceOf()
shouldReturnAnInstanceOf()
shouldHaveType()

44. 13/06/13 GliwiceSpec BDD IN PHP
MATCHERS
Object State:
shouldHave**()

45. 13/06/13 GliwiceSpec BDD IN PHP
TEST DOUBLES
/**
* @param MarkdownStream $stream
*/
function it_adds_a_end_of_list_to_markup($stream)
{
$stream->getNextLine()->willReturn("");
$this->format(" * Hi, there", $stream)
->shouldReturn("</li></ul>");
}

46. 13/06/13 GliwiceSpec BDD IN PHP
LET & LETGO
function let($die)
{
$die->beADoubleOf('Die');
$this->beConstructedWith($die);
}
function it_live_and_let_die($die)
{
$this->liveAndLet()->shouldReturn($die);
}
function letgo(){}

47. 13/06/13 GliwiceSpec BDD IN PHP
PHP SPEC 2
{
"require-dev": {
"phpspec/phpspec": "2.0.*@dev"
},
"config": {
"bin-dir": "bin"
},
"autoload": {"psr-0": {"": "src"}}
}

48. 13/06/13 GliwiceSpec BDD IN PHP
Demo

49. 13/06/13 GliwiceSpec BDD IN PHP
Questions?

50. 13/06/13 GliwiceSpec BDD IN PHP
WE ARE HIRING!
Software Engineer
Front-end Engineer
Software Engineer in test
PRoject manager
Business analyst
www.sensiolabs.co.uk
www.inviqa.com

51. THANK YOU!
@cakper