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Dec 8, 2021
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Add functional test chapter to mailer #16195

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31 changes: 31 additions & 0 deletions mailer.rst
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Expand Up @@ -1121,6 +1121,37 @@ a specific address, instead of the *real* address:
],
]);

Write a Functional Test
~~~~~~~~~~~~~~~~~~~~~~~

To functionally test that an email was sent, and even assert the email content or headers,
you can use the built in assertions::

// tests/Controller/MailControllerTest.php
namespace App\Tests\Controller;

use Symfony\Bundle\FrameworkBundle\Test\MailerAssertionsTrait;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

class MailControllerTest extends WebTestCase
{
use MailerAssertionsTrait;

public function testMailIsSentAndContentIsOk()
{
$client = $this->createClient();
$client->request('GET', '/mail/send');
$this->assertResponseIsSuccessful();

$this->assertEmailCount(1);

$email = $this->getMailerMessage();

$this->assertEmailHtmlBodyContains($email, 'Welcome');
$this->assertEmailTextBodyContains($email, 'Welcome');
}
}

.. _`high availability`: https://en.wikipedia.org/wiki/High_availability
.. _`load balancing`: https://en.wikipedia.org/wiki/Load_balancing_(computing)
.. _`download the foundation-emails.css file`: https://github.com/foundation/foundation-emails/blob/develop/dist/foundation-emails.css
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