1.
Full Stack BDD for
Symfony2
Marcello Duarte
Konstantin Kudryashov

2.
About us
Marcello Duarte
Head of Training
Konstantin Kudryashov
Lead Developer

3.
This talk
• Where are we coming from
• Why BDD
• Behat Best Practices
• Introducing a new tool

4.
from
Cucumber to

5.
Adults don’t think
their way into a new
way of acting

6.
Adults don’t think
their way into a new
way of acting
They act their way
into a new way of
thinking

7.
Ask Why

8.
from xUnit
to xSpec
HP S pec
P

9.
? ? ?
? ?
? ?
? Test ?
? ? ?
?
? ? ? ? ?

10.
code coverage
private
xUnit
database mocking
assert
structure

11.
Language matter

12.
public function testUpdateWithEqualTypes()
{
$installer = $this->createInstallerMock();
$manager = new InstallationManager('vendor');
$manager->addInstaller($installer);
$initial = $this->createPackageMock();
$target = $this->createPackageMock();
$operation = new UpdateOperation($initial, $target, 'test');
$initial
->expects($this->once())
->method('getType')
->will($this->returnValue('library'));
$target
->expects($this->once())
->method('getType')
->will($this->returnValue('library'));
$installer
->expects($this->once())
->method('supports')
->with('library')
->will($this->returnValue(true));
$installer
->expects($this->once())
->method('update')
->with($this->repository, $initial, $target);

13.
Tools matter

14.
Why BDD?

15.
Requirements
Analysis
Design
Develop
Test
9 months 3 months 2 months 12 months ...
[Royce 1970]

16.
Most of the cost in
software development
is in
feedback delay

17.
Requirements
Acceptance
Test
Code
Refactoring
~20 minutes
[Beck & Cunningham 1996-99]

18.
Let’s reduce
feedback delay

19.
Let’s rename a
few things

20.
Narratives
(Why?)
Examples
(What do you
mean?)
Describe
Object
How! Implement
Incremental
Design
[North 03]

21.
Building a simple
Student can enrol
on a course
feature

22.
You can follow
our steps
http://git.io/t4kQ5Q

23.
BDD Rules
• No examples until you have a red step
• No code until you have a red example
• No more code than enough to make it green
• Don’t get carried away!

24.
Behat tips
• Favour MinkAwareInterface over MinkContext
• Extract context per role
• Group features under feature folder
• Use Mink API
• Integrate with framework at config level

25.
PHPSpec2 tips
• Describe classes not configuration
• Concentrate on messages/behaviours

26.
? ? ?
? ?
? ?
?Questions ?
? ? ?
?
? ? ? ? ?

27.
joind.in/7064
Thanks! :)