BDD demisztifikálva

Mészáros Márton www.meza.hu
@vsbmeza
BDBDDD
Beer Driven Behaviour Driven Development Demistified
The Guardian
www.guardian.co.uk

Miért nem sörözünk már?
www.meza.hu | @vsbmeza
A BDD kialakulása
Mi, es mi nem a BDD?
Mikor fáj?
Mikor jó?

BDD - A kezdetek
DAN NORTH
@tastapod
"A test class SHOULD do
something!"
"Let's replace JUnit with
JBehave!"
JBehave RBehave RSpec
Cucumber

BDD - A kezdetek
CHRIS MATTS
@PapaChrisMatts
“But that’s just like
analysis.”
commitment-thebook.com

BDD - A kezdetek
LIZ KEOGH
@lunivore
"BDD and TDD aren’t
actually about making
sure that something
works well. They’re
about uncovering the
parts you don’t
understand; the parts
that are hard, and the
gaps."

BDD - A kezdetek
VALLÁSOK

BDD - Vallások
BDD = rspec
BDD = Cucumber
BDD = JBehave
BDD = simulating user interaction
BDD = acceptance criteria
BDD = TDD
BDD = Behat

BDD - Tévhitek
BDD != ESZKOZOK
BDD != TDD
BDD != TESZTELÉS

BDD - Tévhitek
"A BDD lelke a bizonytalanság és a
tudatlanság - nem a példák
megtalálása, hanem az olyan
példák felfedezése, amiket nem
találunk."
Liz Keogh

BDD - Tévhitek
Given Fred has bought a microwave
And the microwave cost £100
When we refund the microwave
Then Fred should be refunded £100
Example uesd by: Liz Keogh

BDD - Tévhitek
Given a context
When an event happens
Then an outcoume should occur

BDD - Mikor fáj?
Mikor fáj?

BDD - Mikor fáj?
Scenario: logging in
Given I am an internet user
When I navigate to http://www.facebook.com
And I click the field "username"
And I enter "boring@large.com"
And I click the field "password"
And I enter "correct horse battery staple"
And I click the button "Log In"
Then I see "What's on your mind" on the page

BDD - Mikor fáj?
Scenario: entering the pub
Given I am a thirsty lad
When I stand in front of a pub
And I hold the door handle
And I push it down
And I push the door
And I step into the pub
And I push the door back
And I let go of the door
Then I am in the pub

BDD - Mikor fáj?
Scenario: successful submission
Given I'm on the animal creation page
When I fill in Name with 'Alligator'
And select Phylum as 'Chordata'
And fill in Animal Class with 'Sauropsida'
And fill in Order with 'Crocodilia'
And fill in Family with 'Alligatoridae'
And fill in Genus with 'Alligator'
And check Lay Eggs
And click the Create button
Then I should see the notice 'Thank you for your animal
submission!'
And the page should include the animal's name, phylum,
animal class, order, family, and genus

BDD - Mikor fáj?
Scenario: buying beer
Given I am at the bar
When I ask for a Kobanyai
And select Consistency as 'Liquid'
And fill in Type with 'Alcohol'
And fill in Color with 'Yellow'
And fill in Family with 'Beer'
And fill in Manufactor with 'Dreher'
And check 0.5 bottle
And open the cap
Then I should hear the hiss of the gas
And the bottle should include the Kobanyai

BDD - Mikor fáj?
Imaperatív
Hogyan?

BDD - Mikor faj?
Deklaratív
Mit és miért?

BDD - Mikor fáj?
Imperatív, vagy Deklaratív?
Scenario: drink beer
Given I am a thirsty lad wanting beer
When I walk into the pub
And ask for a beer
And pay for a beer
Then I should be served beer
And should drink beer
And my thirst should vanish

BDD - Mikor fáj?
Scenario: In-progress
Given I visit the fixtures page
When a game is in progress
Then I should see the current score of that
match
And I should see the current match time

BDD - Mikor fáj?
Scenario: Signed in User can Preview comment before posting
When I typed some text in the text box
Then I should see the preview in the preview pane
And close the preview box

BDD - Mikor fáj?
Given I am a thirsty lad wanting beer
When I walk into the pub
And drink a beer
Then my thirst should disappear

BDD - Mikor fáj?
Given I am a thirsty lad
When I drink a beer
Then my thirst should disappear

BDD - Mikor jó?
Imperatív
Deklaratív
CHUNK UP

BDD - Mikor jó?
UI
PAGE
AUTHENTICATION
BUSINESS

BDD - Mikor jó?
Scenario: logging in
Given I am an internet user
When I navigate to http://www.facebook.com
And I click the field "username"
And I enter "boring@large.com"
And I click the field "password"
And I enter "correct horse battery staple"
And I click the button "Log In"
Then I see "What's on your mind" on the page

BDD - Mikor jó?
Scenario: read my friends' updates
Given I am a logged in facebook user
When I look at my news feed
Then I should be able to read my
friends' updates

BDD - Mikor jó?
When I fill in Name with 'Alligator'
And select Phylum as 'Chordata'
And fill in Animal Class with 'Sauropsida'
And fill in Order with 'Crocodilia'
And fill in Family with 'Alligatoridae'
And fill in Genus with 'Alligator'
And check Lay Eggs
And click the Create button
Then I should see the notice 'Thank you for your animal
submission!'
And the page should include the animal's name, phylum,
animal class, order, family, and genus

BDD - Mikor jó?
When I add a new animal
Then I should see the page for my
newly created animal
And the notice 'Thank you for your
animal submission!'

BDD - Mikor jó?
E/3

BDD - Mikor jó?
Given I am a logged in facebook user
And there is another registered user
And that user is a friend of me
When I look at the other person's profile
Then I should be able to see his feed

BDD - Mikor jó?
Given Fred is a logged in facebook user
And George is a registered facebook user
And George is a friend of Fred
When Fred looks at George's profile
Then Fred should be able to see George's feed

BDD - Konkluzio?
BDD = Kommunikáció es felfedezés
Chunk up!
E/3

BDD - Kérdések?
www.meza.hu
@vsbmeza

BDD demisztifikálva

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BDD demisztifikálva

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