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Add cookbook for e-mail testing with Symfony2 profiler #2201

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Add cookbook for e-mail testing with Symfony2 profiler #2201

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add email testing with sf2 profiler
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@ricardclau
ricardclau committed Jan 31, 2013
commit 83d981c065e10c3b79f35c712e375f6afc84d2f8
61 changes: 61 additions & 0 deletions cookbook/email/testing.rst
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.. index::
single: Emails; Testing

How to functionally test an Email is sent
=========================================

Sending e-mails with Symfony2 is pretty straight forward thanks to the
``SwiftmailerBundle``, which leverages the power of the `Swiftmailer`_ library.

To functionally test that e-mails are sent, and even assert their subjects,
content or any other headers we can use :ref:`the Symfony2 Profiler <internals-profiler>`.

Let's start with an easy controller action that sends an e-mail::

public function indexAction($name)
{
$message = \Swift_Message::newInstance()
->setSubject('Hello Email')
->setFrom('send@example.com')
->setTo('recipient@example.com')
->setBody('You should see me from the profiler!')
;

$this->get('mailer')->send($message);

return $this->render(...);
}

.. note::

Don't forget to enable profiler as explained in :doc:`/cookbook/testing/profiling`.

And the ``WebTestCase`` to assert the e-mail content should be similar to::

// src/Acme/DemoBundle/Tests/Controller/MailControllerTest.php
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

class MailControllerTest extends WebTestCase
{
public function testMailIsSentAndContentIsOk()
{
$client = static::createClient();
$crawler = $client->request('GET', 'your_action_route_here');

$mailCollector = $client->getProfile()->getCollector('swiftmailer');

// Check that an e-mail was sent
$this->assertEquals(1, $mailCollector->getMessageCount());

$collectedMessages = $mailCollector->getMessages();
$message = $collectedMessages[0];

// Asserting e-mail data
$this->assertInstanceOf('Swift_Message', $message);
$this->assertEquals('Hello Email', $message->getSubject());
$this->assertEquals('send@example.com', key($message->getFrom()));
$this->assertEquals('recipient@example.com', key($message->getTo()));
$this->assertEquals('You should see me from the profiler!', $message->getBody());
}
}