public function MailCaptureTest::testMailSend in Drupal 9

Same name and namespace in other branches

1. 8 core/tests/Drupal/FunctionalTests/MailCaptureTest.php \Drupal\FunctionalTests\MailCaptureTest::testMailSend()

Tests to see if the wrapper function is executed correctly.

File

core/tests/Drupal/FunctionalTests/MailCaptureTest.php, line 28

Class

MailCaptureTest

Tests the SimpleTest email capturing logic, the assertMail assertion and the drupalGetMails function.

Namespace

Drupal\FunctionalTests

Code

public function testMailSend() {

  // Create an email.
  $subject = $this
    ->randomString(64);
  $body = $this
    ->randomString(128);
  $message = [
    'id' => 'drupal_mail_test',
    'headers' => [
      'Content-type' => 'text/html',
    ],
    'subject' => $subject,
    'to' => 'foobar@example.com',
    'body' => $body,
  ];

  // Before we send the email, drupalGetMails should return an empty array.
  $captured_emails = $this
    ->drupalGetMails();
  $this
    ->assertCount(0, $captured_emails, 'The captured emails queue is empty.');

  // Send the email.
  \Drupal::service('plugin.manager.mail')
    ->getInstance([
    'module' => 'simpletest',
    'key' => 'drupal_mail_test',
  ])
    ->mail($message);

  // Ensure that there is one email in the captured emails array.
  $captured_emails = $this
    ->drupalGetMails();
  $this
    ->assertCount(1, $captured_emails, 'One email was captured.');

  // Assert that the email was sent by iterating over the message properties
  // and ensuring that they are captured intact.
  foreach ($message as $field => $value) {
    $this
      ->assertMail($field, $value, new FormattableMarkup('The email was sent and the value for property @field is intact.', [
      '@field' => $field,
    ]), 'Email');
  }

  // Send additional emails so more than one email is captured.
  for ($index = 0; $index < 5; $index++) {
    $message = [
      'id' => 'drupal_mail_test_' . $index,
      'headers' => [
        'Content-type' => 'text/html',
      ],
      'subject' => $this
        ->randomString(64),
      'to' => $this
        ->randomMachineName(32) . '@example.com',
      'body' => $this
        ->randomString(512),
    ];
    \Drupal::service('plugin.manager.mail')
      ->getInstance([
      'module' => 'drupal_mail_test',
      'key' => $index,
    ])
      ->mail($message);
  }

  // There should now be 6 emails captured.
  $captured_emails = $this
    ->drupalGetMails();
  $this
    ->assertCount(6, $captured_emails, 'All emails were captured.');

  // Test different ways of getting filtered emails via drupalGetMails().
  $captured_emails = $this
    ->drupalGetMails([
    'id' => 'drupal_mail_test',
  ]);
  $this
    ->assertCount(1, $captured_emails, 'Only one email is returned when filtering by id.');
  $captured_emails = $this
    ->drupalGetMails([
    'id' => 'drupal_mail_test',
    'subject' => $subject,
  ]);
  $this
    ->assertCount(1, $captured_emails, 'Only one email is returned when filtering by id and subject.');
  $captured_emails = $this
    ->drupalGetMails([
    'id' => 'drupal_mail_test',
    'subject' => $subject,
    'from' => 'this_was_not_used@example.com',
  ]);
  $this
    ->assertCount(0, $captured_emails, 'No emails are returned when querying with an unused from address.');

  // Send the last email again, so we can confirm that the
  // drupalGetMails-filter correctly returns all emails with a given
  // property/value.
  \Drupal::service('plugin.manager.mail')
    ->getInstance([
    'module' => 'drupal_mail_test',
    'key' => $index,
  ])
    ->mail($message);
  $captured_emails = $this
    ->drupalGetMails([
    'id' => 'drupal_mail_test_4',
  ]);
  $this
    ->assertCount(2, $captured_emails, 'All emails with the same id are returned when filtering by id.');
}