BDD Revolution - or how we came back from hell

1. BDD REVOLUTION
OR HOW WE CAME BACK FROM HELL
@mpzalewski
https://github.com/Zales0123
MATEUSZ ZALEWSKI

2. @mpzalewski
Zales0123
mpzalewski.com
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4. BDD is a process designed to aid the management and the delivery of software
development projects by improving communication between engineers and
business professionals.
BEHAVIOUR DRIVEN
DEVELOPMENT
BDD is a process designed to aid the management and the delivery of software
development projects by improving communication between engineers and
business professionals.
http://inviqa.com/insights/bdd-guide
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6. Given "PHP T-Shirt" is priced at €100.00
And the store has "VAT" tax rate of 23%
When I add product "PHP T-Shirt" to the cart
Then my cart taxes should be €23.00
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7. /**
* @Given :product is priced at :price
*/
public function productIsPricedAt(ProductInterface $product, int $price): void
{
$product->setPrice($price);
}
/**
* @Then /^(my cart) taxes should be ("[^"]+")$/
*/
public function myCartTaxesShouldBe(CartInterface $cart, int $money): void
{
Assert::eq($cart->getTaxesTotal(), $money);
}
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8. LESS AMBIGUITY
=
LESS MISUNDERSTANDINGS
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16. https://www.theverge.com/2016/5/5/11592622/this-is-fine-meme-comic
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22. GHERKIN STEP
PHP CODE
CONTEXT
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23. /**
* @When I choose :countryName
*/
public function iChoose(string $countryName): void
{
$this->createPage->chooseName($countryName);
}
/**
* @When I save my changes
* @When I try to save changes
*/
public function iSaveMyChanges(): void
{
$this->updatePage->saveChanges();
}
/**
* @Then I should not be able to choose :name
*/
public function iShouldNotBeAbleToChoose(string $name): void
{
try {
$this->createPage->chooseName($name);
} catch (ElementNotFoundException $exception) {
return;
}
throw new Exception(sprintf('I should not be able to choose "%s".', $name));
}
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24. VALUE
OBJECT
TRANSFORM
ER
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25. /**
* @Transform /^coupon "([^"]+)"$/
* @Transform /^"([^"]+)" coupon$/
* @Transform :coupon
*/
public function getCouponByCode(string $couponCode): CouponInterface
{
$coupon = $this->couponRepository->findOneBy(['code' => $couponCode]);
Assert::notNull(
$coupon,
sprintf('Coupon with code "%s" does not exist', $couponCode)
);
return $coupon;
}
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26. /**
* @var SharedStorageInterface
*/
private $sharedStorage;
public function __construct(SharedStorageInterface $sharedStorage)
{
$this->sharedStorage = $sharedStorage;
}
/**
* @Transform /^(it|its|theirs|them)$/
*/
public function getLatestResource()
{
return $this->sharedStorage->getLatestResource();
}
/**
* @Transform /^(?:this|that|the) ([^"]+)$/
*/
public function getResource($resource)
{
return $this->sharedStorage->get(StringInflector::nameToCode($resource));
}
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27. When I add this product to the cart
When I browse that channel
Then this item should have name "T-shirt banana"
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28. PHP CODE
API
PAGE
UI CLI
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29. class SummaryPage extends SymfonyPage implements SummaryPageInterface
{
public function getRouteName(): string
{
return 'sylius_shop_cart_summary';
}
public function getGrandTotal(): string
{
$totalElement = $this->getElement('grand_total');
return $totalElement->getText();
}
public function removeProduct(string $productName): void
{
$itemElement = $this
->getElement('product_row', ['%name%' => $productName])
;
$itemElement
->find('css', ‚button.sylius-cart-remove-button')
->press()
;
}
}
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30. FRIENDS OF BEHAT
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31. !
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32. BUSINESS VALUE
CODE VALUE
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33. Have no fear of perfection - you’ll never reach it.
~ Salvador Dali
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34. THANK YOU
@mpzalewskihttps://github.com/Zales0123