class MailTest in Drupal 10

Same name and namespace in other branches

8 core/modules/system/tests/src/Kernel/Mail/MailTest.php \Drupal\Tests\system\Kernel\Mail\MailTest
9 core/modules/system/tests/src/Kernel/Mail/MailTest.php \Drupal\Tests\system\Kernel\Mail\MailTest

Performs tests on the pluggable mailing framework.

@group Mail

Hierarchy

class \Drupal\KernelTests\KernelTestBase extends \PHPUnit\Framework\TestCase implements ServiceProviderInterface uses \Drupal\Tests\PhpUnitCompatibilityTrait, \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait, AssertContentTrait, ConfigTestTrait, ExtensionListTestTrait, RandomGeneratorTrait, TestRequirementsTrait, PhpUnitWarnings
- class \Drupal\Tests\system\Kernel\Mail\MailTest

Expanded class hierarchy of MailTest

File

core/modules/system/tests/src/Kernel/Mail/MailTest.php, line 21

Namespace

Drupal\Tests\system\Kernel\Mail

View source

class MailTest extends KernelTestBase {

  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'file',
    'image',
    'mail_cancel_test',
    'mail_html_test',
    'system',
    'system_mail_failure_test',
    'user',
  ];

  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this
      ->installEntitySchema('user');
    $this
      ->installEntitySchema('file');
  }

  /**
   * Assert that the pluggable mail system is functional.
   */
  public function testPluggableFramework() {

    // Switch mail backends.
    $this
      ->configureDefaultMailInterface('test_php_mail_failure');

    // Get the default MailInterface class instance.
    $mail_backend = \Drupal::service('plugin.manager.mail')
      ->getInstance([
      'module' => 'default',
      'key' => 'default',
    ]);

    // Assert whether the default mail backend is an instance of the expected
    // class.
    // Default mail interface can be swapped.
    $this
      ->assertInstanceOf(TestPhpMailFailure::class, $mail_backend);

    // Add a module-specific mail backend.
    $this
      ->config('system.mail')
      ->set('interface.mymodule_testkey', 'test_mail_collector')
      ->save();

    // Get the added MailInterface class instance.
    $mail_backend = \Drupal::service('plugin.manager.mail')
      ->getInstance([
      'module' => 'mymodule',
      'key' => 'testkey',
    ]);

    // Assert whether the added mail backend is an instance of the expected
    // class.
    // Additional mail interfaces can be added.
    $this
      ->assertInstanceOf(TestMailCollector::class, $mail_backend);
  }

  /**
   * Assert that the pluggable mail system is functional.
   */
  public function testErrorMessageDisplay() {

    // Switch mail backends.
    $this
      ->configureDefaultMailInterface('test_php_mail_failure');

    // Test with errors displayed to users.
    \Drupal::service('plugin.manager.mail')
      ->mail('default', 'default', 'test@example.com', 'en');
    $messages = \Drupal::messenger()
      ->messagesByType(MessengerInterface::TYPE_ERROR);
    $this
      ->assertEquals('Unable to send email. Contact the site administrator if the problem persists.', $messages[0]);
    \Drupal::messenger()
      ->deleteAll();

    // Test without errors displayed to users.
    \Drupal::service('plugin.manager.mail')
      ->mail('default', 'default', 'test@example.com', 'en', [
      '_error_message' => '',
    ]);
    $this
      ->assertEmpty(\Drupal::messenger()
      ->messagesByType(MessengerInterface::TYPE_ERROR));
  }

  /**
   * Tests that message sending may be canceled.
   *
   * @see mail_cancel_test_mail_alter()
   */
  public function testCancelMessage() {
    $language_interface = \Drupal::languageManager()
      ->getCurrentLanguage();

    // Reset the state variable that holds sent messages.
    \Drupal::state()
      ->set('system.test_mail_collector', []);

    // Send a test message that mail_cancel_test_alter should cancel.
    \Drupal::service('plugin.manager.mail')
      ->mail('mail_cancel_test', 'cancel_test', 'cancel@example.com', $language_interface
      ->getId());

    // Retrieve sent message.
    $captured_emails = \Drupal::state()
      ->get('system.test_mail_collector');
    $sent_message = end($captured_emails);

    // Assert that the message was not actually sent.
    // Message was canceled.
    $this
      ->assertFalse($sent_message);
  }

  /**
   * Checks the From: and Reply-to: headers.
   */
  public function testFromAndReplyToHeader() {
    $language = \Drupal::languageManager()
      ->getCurrentLanguage();

    // Set required site configuration.
    $this
      ->config('system.site')
      ->set('mail', 'mailtest@example.com')
      ->set('name', 'Drupal')
      ->save();

    // Reset the state variable that holds sent messages.
    \Drupal::state()
      ->set('system.test_mail_collector', []);

    // Send an email with a reply-to address specified.
    $from_email = 'Drupal <mailtest@example.com>';
    $reply_email = 'someone_else@example.com';
    \Drupal::service('plugin.manager.mail')
      ->mail('mail_cancel_test', 'from_test', 'from_test@example.com', $language, [], $reply_email);

    // Test that the reply-to email is just the email and not the site name
    // and default sender email.
    $captured_emails = \Drupal::state()
      ->get('system.test_mail_collector');
    $sent_message = end($captured_emails);

    // Message is sent from the site email account.
    $this
      ->assertEquals($from_email, $sent_message['headers']['From']);

    // Message reply-to headers are set.
    $this
      ->assertEquals($reply_email, $sent_message['headers']['Reply-to']);

    // Errors-to header must not be set, it is deprecated.
    $this
      ->assertFalse(isset($sent_message['headers']['Errors-To']));

    // Test that long site names containing characters that need MIME encoding
    // works as expected.
    $this
      ->config('system.site')
      ->set('name', 'Drépal this is a very long test sentence to test what happens with very long site names')
      ->save();

    // Send an email and check that the From-header contains the site name.
    \Drupal::service('plugin.manager.mail')
      ->mail('mail_cancel_test', 'from_test', 'from_test@example.com', $language);
    $captured_emails = \Drupal::state()
      ->get('system.test_mail_collector');
    $sent_message = end($captured_emails);

    // From header is correctly encoded.
    $this
      ->assertEquals('=?utf-8?Q?Dr=C3=A9pal?= this is a very long test sentence to test what happens with very long site names <mailtest@example.com>', $sent_message['headers']['From']);

    // From header is correctly encoded.
    $this
      ->assertEquals('Drépal this is a very long test sentence to test what happens with very long site names <mailtest@example.com>', iconv_mime_decode($sent_message['headers']['From']));
    $this
      ->assertFalse(isset($sent_message['headers']['Reply-to']), 'Message reply-to is not set if not specified.');

    // Errors-to header must not be set, it is deprecated.
    $this
      ->assertFalse(isset($sent_message['headers']['Errors-To']));

    // Test RFC-2822 rules are respected for 'display-name' component of
    // 'From:' header. Specials characters are not allowed, so randomly add one
    // of them to the site name and check the string is wrapped in quotes. Also
    // hardcode some double-quotes and backslash to validate these are escaped
    // properly too.
    $specials = '()<>[]:;@\\,."';
    $site_name = 'Drupal' . $specials[rand(0, strlen($specials) - 1)] . ' "si\\te"';
    $this
      ->config('system.site')
      ->set('name', $site_name)
      ->save();

    // Send an email and check that the From-header contains the site name
    // within double-quotes. Also make sure double-quotes and "\" are escaped.
    \Drupal::service('plugin.manager.mail')
      ->mail('mail_cancel_test', 'from_test', 'from_test@example.com', $language);
    $captured_emails = \Drupal::state()
      ->get('system.test_mail_collector');
    $sent_message = end($captured_emails);
    $escaped_site_name = str_replace([
      '\\',
      '"',
    ], [
      '\\\\',
      '\\"',
    ], $site_name);

    // From header is correctly quoted.
    $this
      ->assertEquals('"' . $escaped_site_name . '" <mailtest@example.com>', $sent_message['headers']['From']);

    // Make sure display-name is not quoted nor escaped if part on an encoding.
    $site_name = 'Drépal, "si\\te"';
    $this
      ->config('system.site')
      ->set('name', $site_name)
      ->save();

    // Send an email and check that the From-header contains the site name.
    \Drupal::service('plugin.manager.mail')
      ->mail('mail_cancel_test', 'from_test', 'from_test@example.com', $language);
    $captured_emails = \Drupal::state()
      ->get('system.test_mail_collector');
    $sent_message = end($captured_emails);

    // From header is correctly encoded.
    $this
      ->assertEquals('=?utf-8?Q?Dr=C3=A9pal=2C_=22si=5Cte=22?= <mailtest@example.com>', $sent_message['headers']['From']);

    // From header is correctly encoded.
    $this
      ->assertEquals($site_name . ' <mailtest@example.com>', iconv_mime_decode($sent_message['headers']['From']));
  }

  /**
   * Checks that relative paths in mails are converted into absolute URLs.
   */
  public function testConvertRelativeUrlsIntoAbsolute() {
    $language_interface = \Drupal::languageManager()
      ->getCurrentLanguage();
    $this
      ->configureDefaultMailInterface('test_html_mail_collector');

    // Fetch the hostname and port for matching against.
    $http_host = \Drupal::request()
      ->getSchemeAndHttpHost();

    // Random generator.
    $random = new Random();

    // One random tag name.
    $tag_name = strtolower($random
      ->name(8, TRUE));

    // Test root relative urls.
    foreach ([
      'href',
      'src',
    ] as $attribute) {

      // Reset the state variable that holds sent messages.
      \Drupal::state()
        ->set('system.test_mail_collector', []);
      $html = "<{$tag_name} {$attribute}=\"/root-relative\">root relative url in mail test</{$tag_name}>";
      $expected_html = "<{$tag_name} {$attribute}=\"{$http_host}/root-relative\">root relative url in mail test</{$tag_name}>";

      // Prepare render array.
      $render = [
        '#markup' => Markup::create($html),
      ];

      // Send a test message that mail_cancel_test_mail_alter should cancel.
      \Drupal::service('plugin.manager.mail')
        ->mail('mail_html_test', 'render_from_message_param', 'relative_url@example.com', $language_interface
        ->getId(), [
        'message' => $render,
      ]);

      // Retrieve sent message.
      $captured_emails = \Drupal::state()
        ->get('system.test_mail_collector');
      $sent_message = end($captured_emails);

      // Wrap the expected HTML and assert.
      $expected_html = MailFormatHelper::wrapMail($expected_html);
      $this
        ->assertSame($expected_html, $sent_message['body'], "Asserting that {$attribute} is properly converted for mails.");
    }

    // Test protocol relative urls.
    foreach ([
      'href',
      'src',
    ] as $attribute) {

      // Reset the state variable that holds sent messages.
      \Drupal::state()
        ->set('system.test_mail_collector', []);
      $html = "<{$tag_name} {$attribute}=\"//example.com/protocol-relative\">protocol relative url in mail test</{$tag_name}>";
      $expected_html = "<{$tag_name} {$attribute}=\"//example.com/protocol-relative\">protocol relative url in mail test</{$tag_name}>";

      // Prepare render array.
      $render = [
        '#markup' => Markup::create($html),
      ];

      // Send a test message that mail_cancel_test_mail_alter should cancel.
      \Drupal::service('plugin.manager.mail')
        ->mail('mail_html_test', 'render_from_message_param', 'relative_url@example.com', $language_interface
        ->getId(), [
        'message' => $render,
      ]);

      // Retrieve sent message.
      $captured_emails = \Drupal::state()
        ->get('system.test_mail_collector');
      $sent_message = end($captured_emails);

      // Wrap the expected HTML and assert.
      $expected_html = MailFormatHelper::wrapMail($expected_html);
      $this
        ->assertSame($expected_html, $sent_message['body'], "Asserting that {$attribute} is properly converted for mails.");
    }

    // Test absolute urls.
    foreach ([
      'href',
      'src',
    ] as $attribute) {

      // Reset the state variable that holds sent messages.
      \Drupal::state()
        ->set('system.test_mail_collector', []);
      $html = "<{$tag_name} {$attribute}=\"http://example.com/absolute\">absolute url in mail test</{$tag_name}>";
      $expected_html = "<{$tag_name} {$attribute}=\"http://example.com/absolute\">absolute url in mail test</{$tag_name}>";

      // Prepare render array.
      $render = [
        '#markup' => Markup::create($html),
      ];

      // Send a test message that mail_cancel_test_mail_alter should cancel.
      \Drupal::service('plugin.manager.mail')
        ->mail('mail_html_test', 'render_from_message_param', 'relative_url@example.com', $language_interface
        ->getId(), [
        'message' => $render,
      ]);

      // Retrieve sent message.
      $captured_emails = \Drupal::state()
        ->get('system.test_mail_collector');
      $sent_message = end($captured_emails);

      // Wrap the expected HTML and assert.
      $expected_html = MailFormatHelper::wrapMail($expected_html);
      $this
        ->assertSame($expected_html, $sent_message['body'], "Asserting that {$attribute} is properly converted for mails.");
    }
  }

  /**
   * Checks that mails built from render arrays contain absolute paths.
   *
   * By default Drupal uses relative paths for images and links. When sending
   * emails, absolute paths should be used instead.
   */
  public function testRenderedElementsUseAbsolutePaths() {
    $language_interface = \Drupal::languageManager()
      ->getCurrentLanguage();
    $this
      ->configureDefaultMailInterface('test_html_mail_collector');

    // Fetch the hostname and port for matching against.
    $http_host = \Drupal::request()
      ->getSchemeAndHttpHost();

    // Random generator.
    $random = new Random();
    $image_name = $random
      ->name();
    $test_base_url = 'http://localhost';
    $this
      ->setSetting('file_public_base_url', $test_base_url);
    $filepath = \Drupal::service('file_system')
      ->createFilename("{$image_name}.png", '');
    $directory_uri = 'public://' . dirname($filepath);
    \Drupal::service('file_system')
      ->prepareDirectory($directory_uri, FileSystemInterface::CREATE_DIRECTORY);

    // Create an image file.
    $file = File::create([
      'uri' => "public://{$image_name}.png",
      'filename' => "{$image_name}.png",
    ]);
    $file
      ->save();
    $base_path = base_path();
    $path_pairs = [
      'root relative' => [
        $file
          ->getFileUri(),
        "{$http_host}{$base_path}{$image_name}.png",
      ],
      'protocol relative' => [
        '//example.com/image.png',
        '//example.com/image.png',
      ],
      'absolute' => [
        'http://example.com/image.png',
        'http://example.com/image.png',
      ],
    ];

    // Test images.
    foreach ($path_pairs as $test_type => $paths) {
      [
        $input_path,
        $expected_path,
      ] = $paths;

      // Reset the state variable that holds sent messages.
      \Drupal::state()
        ->set('system.test_mail_collector', []);

      // Build the render array.
      $render = [
        '#theme' => 'image',
        '#uri' => $input_path,
      ];
      $expected_html = "<img src=\"{$expected_path}\" alt=\"\" />";

      // Send a test message that mail_cancel_test_mail_alter should cancel.
      \Drupal::service('plugin.manager.mail')
        ->mail('mail_html_test', 'render_from_message_param', 'relative_url@example.com', $language_interface
        ->getId(), [
        'message' => $render,
      ]);

      // Retrieve sent message.
      $captured_emails = \Drupal::state()
        ->get('system.test_mail_collector');
      $sent_message = end($captured_emails);

      // Wrap the expected HTML and assert.
      $expected_html = MailFormatHelper::wrapMail($expected_html);
      $this
        ->assertSame($expected_html, $sent_message['body'], "Asserting that {$test_type} paths are converted properly.");
    }

    // Test links.
    $path_pairs = [
      'root relative' => [
        Url::fromUserInput('/path/to/something'),
        "{$http_host}{$base_path}path/to/something",
      ],
      'protocol relative' => [
        Url::fromUri('//example.com/image.png'),
        '//example.com/image.png',
      ],
      'absolute' => [
        Url::fromUri('http://example.com/image.png'),
        'http://example.com/image.png',
      ],
    ];
    foreach ($path_pairs as $paths) {
      [
        $input_path,
        $expected_path,
      ] = $paths;

      // Reset the state variable that holds sent messages.
      \Drupal::state()
        ->set('system.test_mail_collector', []);

      // Build the render array.
      $render = [
        '#title' => 'Link',
        '#type' => 'link',
        '#url' => $input_path,
      ];
      $expected_html = "<a href=\"{$expected_path}\">Link</a>";

      // Send a test message that mail_cancel_test_mail_alter should cancel.
      \Drupal::service('plugin.manager.mail')
        ->mail('mail_html_test', 'render_from_message_param', 'relative_url@example.com', $language_interface
        ->getId(), [
        'message' => $render,
      ]);

      // Retrieve sent message.
      $captured_emails = \Drupal::state()
        ->get('system.test_mail_collector');
      $sent_message = end($captured_emails);

      // Wrap the expected HTML and assert.
      $expected_html = MailFormatHelper::wrapMail($expected_html);
      $this
        ->assertSame($expected_html, $sent_message['body']);
    }
  }

  /**
   * Configures the default mail interface.
   *
   * KernelTestBase enforces the usage of 'test_mail_collector' plugin to
   * collect mail. Since we need to test this functionality itself, we
   * manually configure the default mail interface.
   *
   * @todo Refactor in https://www.drupal.org/project/drupal/issues/3076715
   *
   * @param string $mail_interface
   *   The mail interface to configure.
   */
  protected function configureDefaultMailInterface($mail_interface) {
    $GLOBALS['config']['system.mail']['interface']['default'] = $mail_interface;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AssertContentTrait::$content	protected	property	The current raw content.
AssertContentTrait::$drupalSettings	protected	property	The drupalSettings value from the current raw $content.
AssertContentTrait::$elements	protected	property	The XML structure parsed from the current raw $content.	1
AssertContentTrait::$plainTextContent	protected	property	The plain-text content of raw $content (text nodes).
AssertContentTrait::assertEscaped	protected	function	Passes if the raw text IS found escaped on the loaded page, fail otherwise.
AssertContentTrait::assertField	protected	function	Asserts that a field exists with the given name or ID.
AssertContentTrait::assertFieldById	protected	function	Asserts that a field exists with the given ID and value.
AssertContentTrait::assertFieldByName	protected	function	Asserts that a field exists with the given name and value.
AssertContentTrait::assertFieldByXPath	protected	function	Asserts that a field exists in the current page by the given XPath.
AssertContentTrait::assertFieldChecked	protected	function	Asserts that a checkbox field in the current page is checked.
AssertContentTrait::assertFieldsByValue	protected	function	Asserts that a field exists in the current page with a given Xpath result.
AssertContentTrait::assertLink	protected	function	Passes if a link with the specified label is found.
AssertContentTrait::assertLinkByHref	protected	function	Passes if a link containing a given href (part) is found.
AssertContentTrait::assertNoDuplicateIds	protected	function	Asserts that each HTML ID is used for just a single element.
AssertContentTrait::assertNoEscaped	protected	function	Passes if the raw text IS NOT found escaped on the loaded page, fail otherwise.
AssertContentTrait::assertNoField	protected	function	Asserts that a field does not exist with the given name or ID.
AssertContentTrait::assertNoFieldById	protected	function	Asserts that a field does not exist with the given ID and value.
AssertContentTrait::assertNoFieldByName	protected	function	Asserts that a field does not exist with the given name and value.
AssertContentTrait::assertNoFieldByXPath	protected	function	Asserts that a field does not exist or its value does not match, by XPath.
AssertContentTrait::assertNoFieldChecked	protected	function	Asserts that a checkbox field in the current page is not checked.
AssertContentTrait::assertNoLink	protected	function	Passes if a link with the specified label is not found.
AssertContentTrait::assertNoLinkByHref	protected	function	Passes if a link containing a given href (part) is not found.
AssertContentTrait::assertNoLinkByHrefInMainRegion	protected	function	Passes if a link containing a given href is not found in the main region.
AssertContentTrait::assertNoOption	protected	function	Asserts that a select option in the current page does not exist.
AssertContentTrait::assertNoOptionSelected	protected	function	Asserts that a select option in the current page is not checked.
AssertContentTrait::assertNoPattern	protected	function	Triggers a pass if the perl regex pattern is not found in raw content.
AssertContentTrait::assertNoRaw	protected	function	Passes if the raw text is NOT found on the loaded page, fail otherwise.
AssertContentTrait::assertNoText	protected	function	Passes if the page (with HTML stripped) does not contains the text.
AssertContentTrait::assertNoTitle	protected	function	Pass if the page title is not the given string.
AssertContentTrait::assertNoUniqueText	protected	function	Passes if the text is found MORE THAN ONCE on the text version of the page.
AssertContentTrait::assertOption	protected	function	Asserts that a select option in the current page exists.
AssertContentTrait::assertOptionByText	protected	function	Asserts that a select option with the visible text exists.
AssertContentTrait::assertOptionSelected	protected	function	Asserts that a select option in the current page is checked.
AssertContentTrait::assertOptionSelectedWithDrupalSelector	protected	function	Asserts that a select option in the current page is checked.
AssertContentTrait::assertOptionWithDrupalSelector	protected	function	Asserts that a select option in the current page exists.
AssertContentTrait::assertPattern	protected	function	Triggers a pass if the Perl regex pattern is found in the raw content.
AssertContentTrait::assertRaw	protected	function	Passes if the raw text IS found on the loaded page, fail otherwise.
AssertContentTrait::assertText	protected	function	Passes if the page (with HTML stripped) contains the text.
AssertContentTrait::assertTextHelper	protected	function	Helper for assertText and assertNoText.
AssertContentTrait::assertTextPattern	protected	function	Asserts that a Perl regex pattern is found in the plain-text content.
AssertContentTrait::assertThemeOutput	protected	function	Asserts themed output.
AssertContentTrait::assertTitle	protected	function	Pass if the page title is the given string.
AssertContentTrait::assertUniqueText	protected	function	Passes if the text is found ONLY ONCE on the text version of the page.
AssertContentTrait::assertUniqueTextHelper	protected	function	Helper for assertUniqueText and assertNoUniqueText.
AssertContentTrait::buildXPathQuery	protected	function	Builds an XPath query.
AssertContentTrait::constructFieldXpath	protected	function	Helper: Constructs an XPath for the given set of attributes and value.
AssertContentTrait::cssSelect	protected	function	Searches elements using a CSS selector in the raw content.
AssertContentTrait::getAllOptions	protected	function	Get all option elements, including nested options, in a select.
AssertContentTrait::getDrupalSettings	protected	function	Gets the value of drupalSettings for the currently-loaded page.
AssertContentTrait::getRawContent	protected	function	Gets the current raw content.
AssertContentTrait::getSelectedItem	protected	function	Get the selected value from a select field.
AssertContentTrait::getTextContent	protected	function	Retrieves the plain-text content from the current raw content.
AssertContentTrait::parse	protected	function	Parse content returned from curlExec using DOM and SimpleXML.
AssertContentTrait::removeWhiteSpace	protected	function	Removes all white-space between HTML tags from the raw content.
AssertContentTrait::setDrupalSettings	protected	function	Sets the value of drupalSettings for the currently-loaded page.
AssertContentTrait::setRawContent	protected	function	Sets the raw content (e.g. HTML).
AssertContentTrait::xpath	protected	function	Performs an xpath search on the contents of the internal browser.
ConfigTestTrait::configImporter	protected	function	Returns a ConfigImporter object to import test configuration.
ConfigTestTrait::copyConfig	protected	function	Copies configuration objects from source storage to target storage.
ExtensionListTestTrait::getModulePath	protected	function	Gets the path for the specified module.
ExtensionListTestTrait::getThemePath	protected	function	Gets the path for the specified theme.
KernelTestBase::$backupGlobals	protected	property	Back up and restore any global variables that may be changed by tests.
KernelTestBase::$backupStaticAttributes	protected	property	Back up and restore static class properties that may be changed by tests.
KernelTestBase::$backupStaticAttributesBlacklist	protected	property	Contains a few static class properties for performance.
KernelTestBase::$classLoader	protected	property
KernelTestBase::$configImporter	protected	property	@todo Move into Config test base class.	3
KernelTestBase::$configSchemaCheckerExclusions	protected static	property	An array of config object names that are excluded from schema checking.
KernelTestBase::$container	protected	property
KernelTestBase::$databasePrefix	protected	property
KernelTestBase::$preserveGlobalState	protected	property	Do not forward any global state from the parent process to the processes that run the actual tests.
KernelTestBase::$root	protected	property	The app root.
KernelTestBase::$runTestInSeparateProcess	protected	property	Kernel tests are run in separate processes because they allow autoloading of code from extensions. Running the test in a separate process isolates this behavior from other tests. Subclasses should not override this property.
KernelTestBase::$siteDirectory	protected	property
KernelTestBase::$strictConfigSchema	protected	property	Set to TRUE to strict check all configuration saved.	4
KernelTestBase::$vfsRoot	protected	property	The virtual filesystem root directory.
KernelTestBase::assertPostConditions	protected	function		1
KernelTestBase::bootEnvironment	protected	function	Bootstraps a basic test environment.
KernelTestBase::bootKernel	private	function	Bootstraps a kernel for a test.
KernelTestBase::config	protected	function	Configuration accessor for tests. Returns non-overridden configuration.
KernelTestBase::disableModules	protected	function	Disables modules for this test.
KernelTestBase::enableModules	protected	function	Enables modules for this test.
KernelTestBase::getConfigSchemaExclusions	protected	function	Gets the config schema exclusions for this test.
KernelTestBase::getDatabaseConnectionInfo	protected	function	Returns the Database connection info to be used for this test.	2
KernelTestBase::getDatabasePrefix	public	function
KernelTestBase::getExtensionsForModules	private	function	Returns Extension objects for $modules to enable.
KernelTestBase::getModulesToEnable	private static	function	Returns the modules to enable for this test.
KernelTestBase::initFileCache	protected	function	Initializes the FileCache component.
KernelTestBase::installConfig	protected	function	Installs default configuration for a given list of modules.
KernelTestBase::installEntitySchema	protected	function	Installs the storage schema for a specific entity type.
KernelTestBase::installSchema	protected	function	Installs database tables from a module schema definition.
KernelTestBase::prepareTemplate	protected	function
KernelTestBase::register	public	function	Registers test-specific services. Overrides ServiceProviderInterface::register	14
KernelTestBase::render	protected	function	Renders a render array.
KernelTestBase::setInstallProfile	protected	function	Sets the install profile and rebuilds the container to update it.
KernelTestBase::setSetting	protected	function	Sets an in-memory Settings variable.
KernelTestBase::setUpBeforeClass	public static	function
KernelTestBase::setUpFilesystem	protected	function	Sets up the filesystem, so things like the file directory.	1
KernelTestBase::stop	protected	function	Stops test execution.
KernelTestBase::tearDown	protected	function		3
KernelTestBase::tearDownCloseDatabaseConnection	public	function	@after
KernelTestBase::vfsDump	protected	function	Dumps the current state of the virtual filesystem to STDOUT.
KernelTestBase::__sleep	public	function	Prevents serializing any properties.
MailTest::$modules	protected static	property	Modules to enable. Overrides KernelTestBase::$modules
MailTest::configureDefaultMailInterface	protected	function	Configures the default mail interface.
MailTest::setUp	protected	function	Overrides KernelTestBase::setUp
MailTest::testCancelMessage	public	function	Tests that message sending may be canceled.
MailTest::testConvertRelativeUrlsIntoAbsolute	public	function	Checks that relative paths in mails are converted into absolute URLs.
MailTest::testErrorMessageDisplay	public	function	Assert that the pluggable mail system is functional.
MailTest::testFromAndReplyToHeader	public	function	Checks the From: and Reply-to: headers.
MailTest::testPluggableFramework	public	function	Assert that the pluggable mail system is functional.
MailTest::testRenderedElementsUseAbsolutePaths	public	function	Checks that mails built from render arrays contain absolute paths.
PhpUnitWarnings::$deprecationWarnings	private static	property	Deprecation warnings from PHPUnit to raise with @trigger_error().
PhpUnitWarnings::addWarning	public	function	Converts PHPUnit deprecation warnings to E_USER_DEPRECATED.
RandomGeneratorTrait::$randomGenerator	protected	property	The random generator.
RandomGeneratorTrait::getRandomGenerator	protected	function	Gets the random generator for the utility methods.
RandomGeneratorTrait::randomMachineName	protected	function	Generates a unique random string containing letters and numbers.
RandomGeneratorTrait::randomObject	public	function	Generates a random PHP object.
RandomGeneratorTrait::randomString	public	function	Generates a pseudo-random string of ASCII characters of codes 32 to 126.
RandomGeneratorTrait::randomStringValidate	public	function	Callback for random string validation.
StorageCopyTrait::replaceStorageContents	protected static	function	Copy the configuration from one storage to another and remove stale items.
TestRequirementsTrait::checkModuleRequirements	private	function	Checks missing module requirements.
TestRequirementsTrait::checkRequirements	protected	function	Check module requirements for the Drupal use case.
TestRequirementsTrait::getDrupalRoot	protected static	function	Returns the Drupal root directory.

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class MailTest in Drupal 10

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