Mocks, Stubs, Tests - Speaker Deck

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L’instant quizz

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Qui a déjà écrit des tests ?

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Qui a déjà utilisé PHPUnit ?

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Qui a déjà mocké une classe ?

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Séance de gym terminée. Merci

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• – – – • – – •

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•

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• • – • – • – • Le format des tests dépend du sujet

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Quand je casserais quelque chose Elle ne me ralentira pas dans mon travail Le code coverage sera de 100%

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Quand je casserais quelque chose Elle ne me ralentira pas dans mon travail Le code coverage sera de 100%

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22,4% 97% 42% Pas bien Bien

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22,4% 97% 42% Pas bien Bien

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•

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• • •

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class PHPTour { public $totalCost; public $attendees; public function getPlacePrice() { return $this->totalCost / $this->attendees; } }

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class PHPTourTest extends PHPUnit_Framework_TestCase { public function testForCoverage() { $tour = new PHPTour(); $tour->totalCost = 40000; $tour->attendees = 100; $this->assertEquals(400, $tour->getPlacePrice()); } }

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$tour->attendees = 0;

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$tour->attendees = 0; Division par zéro

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• – •

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fieldn = $n; } public function getFieldN() { return $this->fieldN; } }

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setField1(’fuu'); $this->assertEquals(’fuu', $cc->getField1()); } // repeat for each fields }

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engine = new Engine(); } }

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engine = new Engine(); } }

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engine = $engine; } }

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engine = $engine; } }

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upgradeWith($sausage); } }

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upgradeWith($sausage); } }

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sausageFactory = $sausageFactory; $this->breadFactory = $breadFactory; } public function serve() { $sausage = $this->sausageFactory->getNewSausage(); $bread = $this->breadFactory->getNewBread(); return $bread->upgradeWith($sausage); } }

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bring(‘erdinger’); } }

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bring(‘erdinger’); } }

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Design by contract

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SINGLETONS

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getFile())) { case 'png‘: return self::TYPE_IMAGE; } }

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getFile())) { case 'png‘: return self::TYPE_IMAGE; } }

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• •

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• • – –

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• • Les mocks/stubs à notre secours !

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JIHANE MOSSALIM

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getMock('Engine'); $car = new Car($engine); } } Tous les appels à Engine renverront « null » En fait… c‘est un stub

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• • – – •

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getMock('Engine'); $engine ->expects($this->once()) ->method(‘start‘) ->will($this->returnValue(true)) ; Un contrat est établi C’est un mock, un vrai

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• $mock • ->expects(…) • ->method('name') • ->with(…) • ->will(…)

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expects(PHPUnit_…_Matcher_Invocation) $this->exactly($n) $this->never() $this->any() $this->atLeastOnce()

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with(PHPUnit_Framework_Constraint) $this->exactly($n) $this->arrayHasKey ('...') $this->any()

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will(PHPUnit_Framework_MockObject_Stub) $this->returnValue($value) $this->returnArgument($n) $this->returnCallback($c) $this->throwException($e) $this->onConsecutiveCalls(1, 2, 3)

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serviceName = $serviceName; $this->oauth = $oauth; $this->endPoint = $endPoint; $this->authorizeUri = $authorizeUri; $this->requestTokenUri = $requestTokenUri; $this->accessTokenUri = $accessTokenUri; $this->session = $session; $this->sessionOAuthTokenName = sprintf('oauth/_%s.oauth_token', $this->serviceName); $this->sessionOAuthTokenSecretName = sprintf('oauth/_%s.oauth_token_secret', $this->serviceName); } // … other methods …

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public function getRequestToken($redirectUri = null) { if ($this->session) { $this->session->remove($this->sessionOAuthTokenName); $this->session->remove($this->sessionOAuthTokenSecretName); } $requestToken = $this->oauth->getRequestToken( $this->requestTokenUri, $redirectUri); if ($requestToken === false) { throw new \OAuthException('Failed fetching request token, response was: ’ .$this->oauth->getLastResponse()); } if ($this->session) { $this->session->set($this->sessionOAuthTokenName, $requestToken['oauth_token']); $this->session->set($this->sessionOAuthTokenSecretName, $requestToken['oauth_token_secret']); } return $requestToken; }

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public function retrieveAccessToken($oauthSessionHandle = '', $verifierToken) { if ($this->session) { if (($token = $this->session->get($this->sessionOAuthTokenName)) && ($tokenSecret = $this->session->get( $this->sessionOAuthTokenSecretName)) ) { $this->oauth->setToken($token, $tokenSecret); } } $response = $this->oauth->getAccessToken($this->accessTokenUri, $oauthSessionHandle, $verifierToken); if (false === $response) { throw new \OAuthException('Failed fetching access token, response was: '. $this->oauth->getLastResponse()); } return $response; } }

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public function setToken($token, $tokenSecret) { $this->oauth->setToken($token, $tokenSecret); } public function get($path) { $url = sprintf('%s/%s', $this->endPoint, ltrim($path, '/')); $state = $this->oauth->fetch($url); if (!$state) { throw new \RuntimeException(sprintf(Can\’t fetch resource %s', $url)); } return $this->oauth->getLastResponse(); }

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class myTest extends PHPUnit_Framework_TestCase { public function testGetRequestToken() { $oauth = $this->getMock('OAuth'); $oauth ->expects($this->once()) ->method('getRequestToken') ->will($this->returnValue('ok')) ; $client = new OAuthClient( 'foo', $oauth, 'bar', 'bar', 'bar', 'bar', 'bar'); $this->assertEquals('ok', $client->getRequestToken()); } }

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class myTest extends PHPUnit_Framework_TestCase { /** @expectedException LogicException */ public function testGetRequestTokenWithError() { $oauth = $this->getMock('OAuth'); $oauth ->expects($this->once()) ->method('getRequestToken') ->will($this->returnValue(false)); $client = new OAuthClient('foo', $oauth, 'bar', 'bar', 'bar', 'bar', 'bar'); $client->getRequestToken(); } }