Getting your hands dirty testing Magento 2 (at MageTitansIT)

GETTING YOUR HANDS DIRTY

TESTING MAGENTO 2

Getting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

Freelance Developer & Trainerhttps://github.com/vinai

https://twitter.com/vinaikopp

Dev since 1998PHP WebDev since PHP3 (1999)

Magento since 2008-01-01Getting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

TESTINGGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

WHO IS DOING IT?

WHAT TOOL?

> PHPUnit?> Behat && PHPSpec?

> Selenium?> Codeception?

BUZZWORD BINGO

BUZZWORD I:

UNIT TESTGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

$ vendor/bin/phpunit -c "dev/tests/unit/phpunit.xml.dist"

$ alias unit-test="$(pwd)/vendor/bin/phpunit -c $(pwd)/dev/tests/unit/phpunit.xml.dist"

$ unit-test

$ unit-test "app/code/My/Module/Test/Unit"

TRY ITvendor/bin/phpunit \ -c "dev/tests/unit/phpunit.xml.dist" \ vendor/magento/module-catalog/Test/Unit/Block

BUZZWORD II:

INTEGRATION TEST

WHAT IS THE DIFFERENCE?

REAL OBJECTS INTERACT

INTEGRATION TESTS NEED THERUNTIME ENVIRONMENT

A failing unit test tells me exactly where my code is broken.

A failing integration test only tells me that something is broken.

Separate DBdev/tests/integration/etc/install-config-mysql.php.dist

$ vendor/bin/phpunit -c dev/tests/integration/phpunit.xmlCould not read "dev/tests/integration/phpunit.xml".

$ cd dev/tests/integration$ ../../../vendor/bin/phpunit

Every run gets it's ownetc, pub and var dirs

dev/tests/integration/tmp/

sandbox-0-b79c13eb842cf3211459b11c775bfbde/

BUZZWORD III:

TDDGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

WHAT IS TDD?Getting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

THE 3 RULESGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

I. No production code without a failing unit test

II. Once there is a failing unit test, stop and make it pass

by writing production code

III. Once the test passes, stop writing production code

until you have a failing unit test again

TDD FOR MAGENTO 2

NO DIFFERENCEGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

</TDD>Getting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

To learn more about TDD,check out the Clean CodersVideos from Robert C. Martin

http://cleancoders.com

(or do a training)

INTEGRATION TESTSFOR MAGENTO 2

VERY SPECIFICGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

PLATFORM KNOWLEDGE

Magento 2 Testing Framework

dev/tests/integration/framework

Test Framework ObjectManagerMagento\TestFramework\ObjectManager::getInstance()

Dependencies$configReader = $objectManager->create(Reader::class);

$deploymentConfig = $objectManager->create( DeploymentConfig::class, ['reader' => $configReader]);

BUZZWORD IV

FIXTURESGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

Fix the system into a known statebefore a test is executed.

Simple PHP Scripts

Relative to dev/tests/integration/testsuite

/** * @magentoDataFixture Magento/Sales/_files/order.php * @magentoDataFixture Magento/Customer/_files/customer.php */public function testSomethingWithAnOrderAndACustomer(){ // ...

CONFIG FIXTURES

Store Scope/** * @magentoConfigFixture current_store catalog/price/scope 1 */public function testDoesSomeoneReadThisHelpMeLetMeOut(){ // ...

Global Scope/** * @magentoConfigFixture currency/options/allow USD */public function testHowMashAndPieTastes(){ // ...

BUZZWORD V

TEST ISOLATION

FRESH INSTALLFOR EACH TEST RUN

dev/tests/integration/phpunit.xml.dist

TESTS_CLEANUP== disabled

SPEEDS THINGS UP

TESTS_CLEANUP== disabled

MANUAL CLEANUP REQUIRED

integration/tmp/sandbox-*

DATABASE ISOLATION

TRANSACTIONSOR

ROLLBACK SCRIPTS

TRANSACTIONS/** * @magentoDbIsolation enabled */ public function testWithoutSideEffects { // ...

TRANSACTIONS/** * @magentoDataFixture Magento/Foo/_files/bar.php */ public function testTheFixtureIsAppliedWithinATransaction { // ...

ROLLBACK SCRIPTS/** * @magentoDataFixture Magento/Customer/_files/customer.php * @magentoDbIsolation disabled */public function testTransactionalCode(){ // ...

Before Testinclude 'Magento/Customer/_files/customer.php';

After Testinclude 'Magento/Customer/_files/customer_rollback.php';

APPLICATION ISOLATION

REINSTANTIATEALMOST EVERYTHING

RESET MAGENTO AFTER TEST/** * @magentoAppIsolation enabled */public function testTestWithSingletons(){

Controller Tests: Automatic resetclass FooBarIndexActionTest extends \Magento\TestFramework\TestCase\AbstractController{ public function testTheLayoutIsRendered() { $this->dispatch('foo/bar/index');

REMEMBERTHIS

ISOLATEYOUR TESTS

AND ALL WILL BE

GOODGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

[breathing pause]

APPLICATION AREA

APP AREAS

global

frontend

adminhtml

/** * @magentoAppArea frontend */class AddressesTest extends \PHPUnit_Framework_TestCase{

MORE AREAS

webapi_rest

webapi_soap

\Magento\TestFramework\App\State

public function testPluginInWebapiRestScope(){ $class = \Magento\TestFramework\App\State::class; $appAreaState = $this->objectManager->get($class);

$appAreaState->setAreaCode('webapi_rest');

protected function tearDown(){ // ... $appAreaState->setAreaCode(null); }

ACTION[CONTROLLER]

TESTSGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

FRONTEND

\Magento\TestFramework\TestCase\AbstractController

ADMINHTML

\Magento\TestFramework\TestCase\AbstractBackendController

EXAMPLE!

Event Observer for:sales_order_place_after

I. TESTING THE CONFIGURATION

public function testTheModuleRegistersASalesOrderPlaceAfterObserver(){ $class = \Magento\Framework\Event\Config::class; $eventConfig = ObjectManager::getInstance()->create($class); $observers = $eventConfig->getObservers('sales_order_place_after');

$this->assertArrayHasKey('meetup_observer', $observers);

$expectedClass = \Meetup\Observer\Observer\SalesOrderPlaceAfter::class; $this->assertSame($expectedClass, $observers['meetup_observer']['instance']);

$this->assertFalse($observers['meetup_observer']['shared']);}

1/2) Get the config in array format$class = \Magento\Framework\Event\Config::class;$eventConfig = ObjectManager::getInstance()->create($class);

$event = 'sales_order_place_after';$observers = $eventConfig->getObservers($event);

2/2) Assert config values$this->assertArrayHasKey('meetup_observer', $observers);

$this->assertSame( SalesOrderPlaceAfter::class, $observers['meetup_observer']['instance']);

$this->assertFalse($observers['meetup_observer']['shared']);

II. TESTING THE OBSERVER

O_0(NOTHING TO TEST)

III. INTEGRATION TEST

Our observer has no side effects.We have to improvise...

/** * @magentoDataFixture Magento/Sales/_files/order.php */public function testSalesOrderPlaceAfterObserverIsCalled(){ $this->injectMockObserverWithExpectation();

$order = $this->getOrderFixture();

$this->objectManager ->create(OrderManagementInterface::class) ->place($order);}

public function injectMockObserverWithExpectation(){ $mockObserver = $this->getMock(SalesOrderPlaceAfter::class); $mockObserver->expects($this->once())->method('execute');

$this->registerObserverTestDouble($mockObserver);}

private function registerObserverTestDouble($mockObserver){ $class = \Magento\Framework\Event\Config\Data::class; $eventConfigData = $this->objectManager->get($class);

$event = 'sales_order_place_after'; $name = 'meetup_observer';

$eventConfigData->merge( [$event => [$name => ['shared' => true]]] );

// ...}

private function registerObserverTestDouble($mockObserver){ // ...

$this->objectManager->addSharedInstance( $mockObserver, SalesOrderPlaceAfter::class );}

/** * @magentoDataFixture Magento/Sales/_files/order.php */public function testSalesOrderPlaceAfterObserverIsCalled(){ // ...

// ...

private function getOrderFixture(){ $class = OrderRepositoryInterface::class; $orderRepository = $this->objectManager->create($class);

$criteria = $this->objectManager ->create(SearchCriteriaBuilder::class) ->addFilter('increment_id', '100000001') ->create();

$result = $orderRepository->getList($criteria);

return array_values($result->getItems())[0];}

/** * @magentoDataFixture Magento/Sales/_files/order.php */public function testSalesOrderPlaceAfterObserverIsCalled(){ $this->injectMockObserverWithExpectation();

$this->objectManager ->create(OrderManagementInterface::class) ->place($order);}

GO FORTHAND TEST

ALL THINGS!Getting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

ONE MORE THING...

MAGE2KATASGetting your hands dirty Testing Magento 2 - Magento London Meetup, Feb. 2016 - ! - contact@vinaikopp.com - twitter://@VinaiKopp

MAGE2KATAS

> Screencast Series> Examples

> Code Katas

mage2katas.com

THANK YOU <3

Getting your hands dirty testing Magento 2 (at MageTitansIT)

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