class DownloadTest in Drupal 9

Same name in this branch

9 core/modules/file/tests/src/Functional/DownloadTest.php \Drupal\Tests\file\Functional\DownloadTest
9 core/modules/migrate/tests/src/Kernel/process/DownloadTest.php \Drupal\Tests\migrate\Kernel\process\DownloadTest

Same name and namespace in other branches

8 core/modules/file/tests/src/Functional/DownloadTest.php \Drupal\Tests\file\Functional\DownloadTest

Tests for download/file transfer functions.

@group file

Hierarchy

class \Drupal\Tests\BrowserTestBase extends \PHPUnit\Framework\TestCase uses \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait, FunctionalTestSetupTrait, TestSetupTrait, AssertLegacyTrait, BlockCreationTrait, ConfigTestTrait, ExtensionListTestTrait, ContentTypeCreationTrait, NodeCreationTrait, PhpUnitCompatibilityTrait, RandomGeneratorTrait, TestRequirementsTrait, PhpUnitWarnings, UiHelperTrait, UserCreationTrait, XdebugRequestTrait
- class \Drupal\Tests\file\Functional\FileManagedTestBase
  - class \Drupal\Tests\file\Functional\DownloadTest

Expanded class hierarchy of DownloadTest

File

core/modules/file/tests/src/Functional/DownloadTest.php, line 12

Namespace

Drupal\Tests\file\Functional

View source

class DownloadTest extends FileManagedTestBase {

  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';

  /**
   * The file URL generator.
   *
   * @var \Drupal\Core\File\FileUrlGeneratorInterface
   */
  protected $fileUrlGenerator;
  protected function setUp() : void {
    parent::setUp();
    $this->fileUrlGenerator = $this->container
      ->get('file_url_generator');

    // Clear out any hook calls.
    file_test_reset();
  }

  /**
   * Tests the public file transfer system.
   */
  public function testPublicFileTransfer() {

    // Test generating a URL to a created file.
    $file = $this
      ->createFile();
    $url = $this->fileUrlGenerator
      ->generateAbsoluteString($file
      ->getFileUri());

    // URLs can't contain characters outside the ASCII set so $filename has to be
    // encoded.
    $filename = $GLOBALS['base_url'] . '/' . \Drupal::service('stream_wrapper_manager')
      ->getViaScheme('public')
      ->getDirectoryPath() . '/' . rawurlencode($file
      ->getFilename());
    $this
      ->assertEquals($filename, $url, 'Correctly generated a URL for a created file.');
    $http_client = $this
      ->getHttpClient();
    $response = $http_client
      ->head($url);
    $this
      ->assertEquals(200, $response
      ->getStatusCode(), 'Confirmed that the generated URL is correct by downloading the created file.');

    // Test generating a URL to a shipped file (i.e. a file that is part of
    // Drupal core, a module or a theme, for example a JavaScript file).
    $filepath = 'core/assets/vendor/jquery/jquery.min.js';
    $url = $this->fileUrlGenerator
      ->generateAbsoluteString($filepath);
    $this
      ->assertEquals($GLOBALS['base_url'] . '/' . $filepath, $url, 'Correctly generated a URL for a shipped file.');
    $response = $http_client
      ->head($url);
    $this
      ->assertEquals(200, $response
      ->getStatusCode(), 'Confirmed that the generated URL is correct by downloading the shipped file.');
  }

  /**
   * Tests the private file transfer system.
   */
  public function testPrivateFileTransferWithoutPageCache() {
    $this
      ->doPrivateFileTransferTest();
  }

  /**
   * Tests the private file transfer system.
   */
  protected function doPrivateFileTransferTest() {

    // Set file downloads to private so handler functions get called.
    // Create a file.
    $contents = $this
      ->randomMachineName(8);
    $file = $this
      ->createFile(NULL, $contents, 'private');

    // Created private files without usage are by default not accessible
    // for a user different from the owner, but createFile always uses uid 1
    // as the owner of the files. Therefore make it permanent to allow access
    // if a module allows it.
    $file
      ->setPermanent();
    $file
      ->save();
    $url = $this->fileUrlGenerator
      ->generateAbsoluteString($file
      ->getFileUri());

    // Set file_test access header to allow the download.
    file_test_reset();
    file_test_set_return('download', [
      'x-foo' => 'Bar',
    ]);
    $this
      ->drupalGet($url);

    // Verify that header is set by file_test module on private download.
    $this
      ->assertSession()
      ->responseHeaderEquals('x-foo', 'Bar');

    // Verify that page cache is disabled on private file download.
    $this
      ->assertSession()
      ->responseHeaderDoesNotExist('x-drupal-cache');
    $this
      ->assertSession()
      ->statusCodeEquals(200);

    // Ensure hook_file_download is fired correctly.
    $this
      ->assertEquals($file
      ->getFileUri(), \Drupal::state()
      ->get('file_test.results')['download'][0][0]);

    // Test that the file transferred correctly.
    $this
      ->assertSame($contents, $this
      ->getSession()
      ->getPage()
      ->getContent(), 'Contents of the file are correct.');
    $http_client = $this
      ->getHttpClient();

    // Deny access to all downloads via a -1 header.
    file_test_set_return('download', -1);
    $response = $http_client
      ->head($url, [
      'http_errors' => FALSE,
    ]);
    $this
      ->assertSame(403, $response
      ->getStatusCode(), 'Correctly denied access to a file when file_test sets the header to -1.');

    // Try non-existent file.
    file_test_reset();
    $url = $this->fileUrlGenerator
      ->generateAbsoluteString('private://' . $this
      ->randomMachineName());
    $response = $http_client
      ->head($url, [
      'http_errors' => FALSE,
    ]);
    $this
      ->assertSame(404, $response
      ->getStatusCode(), 'Correctly returned 404 response for a non-existent file.');

    // Assert that hook_file_download is not called.
    $this
      ->assertEquals([], \Drupal::state()
      ->get('file_test.results')['download']);

    // Try requesting the private file url without a file specified.
    file_test_reset();
    $this
      ->drupalGet('/system/files');
    $this
      ->assertSession()
      ->statusCodeEquals(404);

    // Assert that hook_file_download is not called.
    $this
      ->assertEquals([], \Drupal::state()
      ->get('file_test.results')['download']);
  }

  /**
   * Test FileUrlGeneratorInterface::generateString()
   */
  public function testFileCreateUrl() {

    // "Special" ASCII characters.
    $basename = " -._~!\$'\"()*@[]?&+%#,;=:\n\0" . "%23%25%26%2B%2F%3F" . "éøïвβ中國書۞";
    $basename_encoded = '%20-._~%21%24%27%22%28%29%2A%40%5B%5D%3F%26%2B%25%23%2C%3B%3D%3A__' . '%2523%2525%2526%252B%252F%253F' . '%C3%A9%C3%B8%C3%AF%D0%B2%CE%B2%E4%B8%AD%E5%9C%8B%E6%9B%B8%DB%9E';

    // Public files should not be served by Drupal, so their URLs should not be
    // routed through Drupal, whereas private files should be served by Drupal,
    // so they need to be. The difference is most apparent when $script_path
    // is not empty (i.e., when not using clean URLs).
    $clean_url_settings = [
      'clean' => '',
      'unclean' => 'index.php/',
    ];
    $public_directory_path = \Drupal::service('stream_wrapper_manager')
      ->getViaScheme('public')
      ->getDirectoryPath();
    foreach ($clean_url_settings as $clean_url_setting => $script_path) {
      $clean_urls = $clean_url_setting == 'clean';
      $request = $this
        ->prepareRequestForGenerator($clean_urls);
      $base_path = $request
        ->getSchemeAndHttpHost() . $request
        ->getBasePath();
      $this
        ->checkUrl('public', '', $basename, $base_path . '/' . $public_directory_path . '/' . $basename_encoded);
      $this
        ->checkUrl('private', '', $basename, $base_path . '/' . $script_path . 'system/files/' . $basename_encoded);
    }
    $this
      ->assertEquals('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==', $this->fileUrlGenerator
      ->generateString('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==', FALSE));
  }

  /**
   * Download a file from the URL generated by generateString().
   *
   * Create a file with the specified scheme, directory and filename; check that
   * the URL generated by FileUrlGeneratorInterface::generateString() for the
   * specified file equals the specified URL; fetch the URL and then compare the
   * contents to the file.
   *
   * @param string $scheme
   *   A scheme, e.g. "public".
   * @param string $directory
   *   A directory, possibly "".
   * @param string $filename
   *   A filename.
   * @param string $expected_url
   *   The expected URL.
   */
  private function checkUrl($scheme, $directory, $filename, $expected_url) {

    // Convert $filename to a valid filename, i.e. strip characters not
    // supported by the filesystem, and create the file in the specified
    // directory.
    $filepath = \Drupal::service('file_system')
      ->createFilename($filename, $directory);
    $directory_uri = $scheme . '://' . dirname($filepath);
    \Drupal::service('file_system')
      ->prepareDirectory($directory_uri, FileSystemInterface::CREATE_DIRECTORY);
    $file = $this
      ->createFile($filepath, NULL, $scheme);
    $url = $this->fileUrlGenerator
      ->generateAbsoluteString($file
      ->getFileUri());
    $this
      ->assertEquals($expected_url, $url);
    if ($scheme == 'private') {

      // Tell the implementation of hook_file_download() in file_test.module
      // that this file may be downloaded.
      file_test_set_return('download', [
        'x-foo' => 'Bar',
      ]);
    }
    $this
      ->drupalGet($url);
    $this
      ->assertSession()
      ->statusCodeEquals(200);
    $this
      ->assertSession()
      ->responseContains(file_get_contents($file
      ->getFileUri()));
    $file
      ->delete();
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AssertLegacyTrait::assert Deprecated	protected	function
AssertLegacyTrait::assertCacheTag Deprecated	protected	function	Asserts whether an expected cache tag was present in the last response.
AssertLegacyTrait::assertElementNotPresent Deprecated	protected	function	Asserts that the element with the given CSS selector is not present.
AssertLegacyTrait::assertElementPresent Deprecated	protected	function	Asserts that the element with the given CSS selector is present.
AssertLegacyTrait::assertEqual Deprecated	protected	function
AssertLegacyTrait::assertEscaped Deprecated	protected	function	Passes if the raw text IS found escaped on the loaded page, fail otherwise.
AssertLegacyTrait::assertField Deprecated	protected	function	Asserts that a field exists with the given name or ID.
AssertLegacyTrait::assertFieldById Deprecated	protected	function	Asserts that a field exists with the given ID and value.
AssertLegacyTrait::assertFieldByName Deprecated	protected	function	Asserts that a field exists with the given name and value.
AssertLegacyTrait::assertFieldByXPath Deprecated	protected	function	Asserts that a field exists in the current page by the given XPath.
AssertLegacyTrait::assertFieldChecked Deprecated	protected	function	Asserts that a checkbox field in the current page is checked.
AssertLegacyTrait::assertFieldsByValue Deprecated	protected	function	Asserts that a field exists in the current page with a given Xpath result.
AssertLegacyTrait::assertHeader Deprecated	protected	function	Checks that current response header equals value.
AssertLegacyTrait::assertIdentical Deprecated	protected	function
AssertLegacyTrait::assertIdenticalObject Deprecated	protected	function
AssertLegacyTrait::assertLink Deprecated	protected	function	Passes if a link with the specified label is found.
AssertLegacyTrait::assertLinkByHref Deprecated	protected	function	Passes if a link containing a given href (part) is found.
AssertLegacyTrait::assertNoCacheTag Deprecated	protected	function	Asserts whether an expected cache tag was absent in the last response.
AssertLegacyTrait::assertNoEscaped Deprecated	protected	function	Passes if the raw text is not found escaped on the loaded page.
AssertLegacyTrait::assertNoField Deprecated	protected	function	Asserts that a field does NOT exist with the given name or ID.
AssertLegacyTrait::assertNoFieldById Deprecated	protected	function	Asserts that a field does not exist with the given ID and value.
AssertLegacyTrait::assertNoFieldByName Deprecated	protected	function	Asserts that a field does not exist with the given name and value.
AssertLegacyTrait::assertNoFieldByXPath Deprecated	protected	function	Asserts that a field does not exist or its value does not match, by XPath.
AssertLegacyTrait::assertNoFieldChecked Deprecated	protected	function	Asserts that a checkbox field in the current page is not checked.
AssertLegacyTrait::assertNoLink Deprecated	protected	function	Passes if a link with the specified label is not found.
AssertLegacyTrait::assertNoLinkByHref Deprecated	protected	function	Passes if a link containing a given href (part) is not found.
AssertLegacyTrait::assertNoOption Deprecated	protected	function	Asserts that a select option does NOT exist in the current page.
AssertLegacyTrait::assertNoPattern Deprecated	protected	function	Triggers a pass if the Perl regex pattern is not found in the raw content.
AssertLegacyTrait::assertNoRaw Deprecated	protected	function	Passes if the raw text IS not found on the loaded page, fail otherwise.
AssertLegacyTrait::assertNotEqual Deprecated	protected	function
AssertLegacyTrait::assertNoText Deprecated	protected	function	Passes if the page (with HTML stripped) does not contains the text.
AssertLegacyTrait::assertNotIdentical Deprecated	protected	function
AssertLegacyTrait::assertNoUniqueText Deprecated	protected	function	Passes if the text is found MORE THAN ONCE on the text version of the page.
AssertLegacyTrait::assertOption Deprecated	protected	function	Asserts that a select option in the current page exists.
AssertLegacyTrait::assertOptionByText Deprecated	protected	function	Asserts that a select option with the visible text exists.
AssertLegacyTrait::assertOptionSelected Deprecated	protected	function	Asserts that a select option in the current page is checked.
AssertLegacyTrait::assertPattern Deprecated	protected	function	Triggers a pass if the Perl regex pattern is found in the raw content.
AssertLegacyTrait::assertRaw Deprecated	protected	function	Passes if the raw text IS found on the loaded page, fail otherwise.
AssertLegacyTrait::assertResponse Deprecated	protected	function	Asserts the page responds with the specified response code.
AssertLegacyTrait::assertText Deprecated	protected	function	Passes if the page (with HTML stripped) contains the text.
AssertLegacyTrait::assertTextHelper Deprecated	protected	function	Helper for assertText and assertNoText.
AssertLegacyTrait::assertTitle Deprecated	protected	function	Pass if the page title is the given string.
AssertLegacyTrait::assertUniqueText Deprecated	protected	function	Passes if the text is found ONLY ONCE on the text version of the page.
AssertLegacyTrait::assertUrl Deprecated	protected	function	Passes if the internal browser's URL matches the given path.
AssertLegacyTrait::buildXPathQuery Deprecated	protected	function	Builds an XPath query.
AssertLegacyTrait::constructFieldXpath Deprecated	protected	function	Helper: Constructs an XPath for the given set of attributes and value.
AssertLegacyTrait::getAllOptions Deprecated	protected	function	Get all option elements, including nested options, in a select.
AssertLegacyTrait::getRawContent Deprecated	protected	function	Gets the current raw content.
AssertLegacyTrait::pass Deprecated	protected	function
AssertLegacyTrait::verbose Deprecated	protected	function
BlockCreationTrait::placeBlock	protected	function	Creates a block instance based on default settings. Aliased as: drupalPlaceBlock
BrowserHtmlDebugTrait::$htmlOutputBaseUrl	protected	property	The Base URI to use for links to the output files.
BrowserHtmlDebugTrait::$htmlOutputClassName	protected	property	Class name for HTML output logging.
BrowserHtmlDebugTrait::$htmlOutputCounter	protected	property	Counter for HTML output logging.
BrowserHtmlDebugTrait::$htmlOutputCounterStorage	protected	property	Counter storage for HTML output logging.
BrowserHtmlDebugTrait::$htmlOutputDirectory	protected	property	Directory name for HTML output logging.
BrowserHtmlDebugTrait::$htmlOutputEnabled	protected	property	HTML output output enabled.
BrowserHtmlDebugTrait::$htmlOutputFile	protected	property	The file name to write the list of URLs to.
BrowserHtmlDebugTrait::$htmlOutputTestId	protected	property	HTML output test ID.
BrowserHtmlDebugTrait::formatHtmlOutputHeaders	protected	function	Formats HTTP headers as string for HTML output logging.
BrowserHtmlDebugTrait::getHtmlOutputHeaders	protected	function	Returns headers in HTML output format.	1
BrowserHtmlDebugTrait::getResponseLogHandler	protected	function	Provides a Guzzle middleware handler to log every response received.
BrowserHtmlDebugTrait::htmlOutput	protected	function	Logs a HTML output message in a text file.
BrowserHtmlDebugTrait::initBrowserOutputFile	protected	function	Creates the directory to store browser output.
BrowserTestBase::$baseUrl	protected	property	The base URL.
BrowserTestBase::$configImporter	protected	property	The config importer that can be used in a test.
BrowserTestBase::$customTranslations	protected	property	An array of custom translations suitable for drupal_rewrite_settings().
BrowserTestBase::$databasePrefix	protected	property	The database prefix of this test run.
BrowserTestBase::$mink	protected	property	Mink session manager.
BrowserTestBase::$minkDefaultDriverArgs	protected	property	Mink default driver params.
BrowserTestBase::$minkDefaultDriverClass	protected	property	Mink class for the default driver to use.	1
BrowserTestBase::$originalContainer	protected	property	The original container.
BrowserTestBase::$originalShutdownCallbacks	protected	property	The original array of shutdown function callbacks.
BrowserTestBase::$preserveGlobalState	protected	property
BrowserTestBase::$profile	protected	property	The profile to install as a basis for testing.	39
BrowserTestBase::$root	protected	property	The app root.
BrowserTestBase::$runTestInSeparateProcess	protected	property	Browser tests are run in separate processes to prevent collisions between code that may be loaded by tests.
BrowserTestBase::$timeLimit	protected	property	Time limit in seconds for the test.
BrowserTestBase::$translationFilesDirectory	protected	property	The translation file directory for the test environment.
BrowserTestBase::cleanupEnvironment	protected	function	Clean up the Simpletest environment.
BrowserTestBase::config	protected	function	Configuration accessor for tests. Returns non-overridden configuration.
BrowserTestBase::drupalGetHeader Deprecated	protected	function	Gets the value of an HTTP response header.
BrowserTestBase::filePreDeleteCallback	public static	function	Ensures test files are deletable.
BrowserTestBase::getDefaultDriverInstance	protected	function	Gets an instance of the default Mink driver.
BrowserTestBase::getDrupalSettings	protected	function	Gets the JavaScript drupalSettings variable for the currently-loaded page.	1
BrowserTestBase::getHttpClient	protected	function	Obtain the HTTP client for the system under test.
BrowserTestBase::getMinkDriverArgs	protected	function	Get the Mink driver args from an environment variable, if it is set. Can be overridden in a derived class so it is possible to use a different value for a subset of tests, e.g. the JavaScript tests.	1
BrowserTestBase::getOptions	protected	function	Helper function to get the options of select field.
BrowserTestBase::getSession	public	function	Returns Mink session.
BrowserTestBase::getSessionCookies	protected	function	Get session cookies from current session.
BrowserTestBase::getTestMethodCaller	protected	function	Retrieves the current calling line in the class under test. Overrides BrowserHtmlDebugTrait::getTestMethodCaller
BrowserTestBase::initFrontPage	protected	function	Visits the front page when initializing Mink.	3
BrowserTestBase::initMink	protected	function	Initializes Mink sessions.	1
BrowserTestBase::installDrupal	public	function	Installs Drupal into the Simpletest site.	1
BrowserTestBase::registerSessions	protected	function	Registers additional Mink sessions.
BrowserTestBase::setUpAppRoot	protected	function	Sets up the root application path.
BrowserTestBase::setUpBeforeClass	public static	function		1
BrowserTestBase::tearDown	protected	function		3
BrowserTestBase::translatePostValues	protected	function	Transforms a nested array into a flat array suitable for submitForm().
BrowserTestBase::xpath	protected	function	Performs an xpath search on the contents of the internal browser.
BrowserTestBase::__sleep	public	function	Prevents serializing any properties.
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.
ContentTypeCreationTrait::createContentType	protected	function	Creates a custom content type based on default settings. Aliased as: drupalCreateContentType	1
DownloadTest::$defaultTheme	protected	property	The theme to install as the default for testing. Overrides BrowserTestBase::$defaultTheme
DownloadTest::$fileUrlGenerator	protected	property	The file URL generator.
DownloadTest::checkUrl	private	function	Download a file from the URL generated by generateString().
DownloadTest::doPrivateFileTransferTest	protected	function	Tests the private file transfer system.
DownloadTest::setUp	protected	function	Overrides FileManagedTestBase::setUp
DownloadTest::testFileCreateUrl	public	function	Test FileUrlGeneratorInterface::generateString()
DownloadTest::testPrivateFileTransferWithoutPageCache	public	function	Tests the private file transfer system.
DownloadTest::testPublicFileTransfer	public	function	Tests the public file transfer system.
ExtensionListTestTrait::getModulePath	protected	function	Gets the path for the specified module.
ExtensionListTestTrait::getThemePath	protected	function	Gets the path for the specified theme.
FileManagedTestBase::$modules	protected static	property	Modules to enable. Overrides BrowserTestBase::$modules	2
FileManagedTestBase::assertDifferentFile	public	function	Asserts that two files are not the same by comparing the fid and filepath.
FileManagedTestBase::assertFileHookCalled	public	function	Assert that a hook_file_* hook was called a certain number of times.
FileManagedTestBase::assertFileHooksCalled	public	function	Assert that all of the specified hook_file_* hooks were called once, other values result in failure.
FileManagedTestBase::assertFileUnchanged	public	function	Asserts that two files have the same values (except timestamp).
FileManagedTestBase::assertSameFile	public	function	Asserts that two files are the same by comparing the fid and filepath.
FileManagedTestBase::createFile	public	function	Create a file and save it to the files table and assert that it occurs correctly.
FileManagedTestBase::createUri	public	function	Creates a file and returns its URI.
FunctionalTestSetupTrait::$apcuEnsureUniquePrefix	protected	property	The flag to set 'apcu_ensure_unique_prefix' setting.	1
FunctionalTestSetupTrait::$classLoader	protected	property	The class loader to use for installation and initialization of setup.
FunctionalTestSetupTrait::$rootUser	protected	property	The "#1" admin user.
FunctionalTestSetupTrait::doInstall	protected	function	Execute the non-interactive installer.	1
FunctionalTestSetupTrait::getDatabaseTypes	protected	function	Returns all supported database driver installer objects.
FunctionalTestSetupTrait::initConfig	protected	function	Initialize various configurations post-installation.	1
FunctionalTestSetupTrait::initKernel	protected	function	Initializes the kernel after installation.
FunctionalTestSetupTrait::initSettings	protected	function	Initialize settings created during install.
FunctionalTestSetupTrait::initUserSession	protected	function	Initializes user 1 for the site to be installed.
FunctionalTestSetupTrait::installDefaultThemeFromClassProperty	protected	function	Installs the default theme defined by `static::$defaultTheme` when needed.
FunctionalTestSetupTrait::installModulesFromClassProperty	protected	function	Install modules defined by `static::$modules`.	1
FunctionalTestSetupTrait::installParameters	protected	function	Returns the parameters that will be used when Simpletest installs Drupal.	9
FunctionalTestSetupTrait::prepareEnvironment	protected	function	Prepares the current environment for running the test.	20
FunctionalTestSetupTrait::prepareRequestForGenerator	protected	function	Creates a mock request and sets it on the generator.
FunctionalTestSetupTrait::prepareSettings	protected	function	Prepares site settings and services before installation.	2
FunctionalTestSetupTrait::rebuildAll	protected	function	Resets and rebuilds the environment after setup.
FunctionalTestSetupTrait::rebuildContainer	protected	function	Rebuilds \Drupal::getContainer().
FunctionalTestSetupTrait::resetAll	protected	function	Resets all data structures after having enabled new modules.
FunctionalTestSetupTrait::setContainerParameter	protected	function	Changes parameters in the services.yml file.
FunctionalTestSetupTrait::setupBaseUrl	protected	function	Sets up the base URL based upon the environment variable.
FunctionalTestSetupTrait::writeSettings	protected	function	Rewrites the settings.php file of the test site.	1
NodeCreationTrait::createNode	protected	function	Creates a node based on default settings. Aliased as: drupalCreateNode
NodeCreationTrait::getNodeByTitle	public	function	Get a node from the database based on its title. Aliased as: drupalGetNodeByTitle
PhpUnitWarnings::$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::$randomGenerator	protected	property	The random generator.
RandomGeneratorTrait::getRandomGenerator	protected	function	Gets the random generator for the utility methods.
RandomGeneratorTrait::randomMachineName	protected	function	Generates a unique random string containing letters and numbers.	1
RandomGeneratorTrait::randomObject	public	function	Generates a random PHP object.
RandomGeneratorTrait::randomString	public	function	Generates a pseudo-random string of ASCII characters of codes 32 to 126.
RandomGeneratorTrait::randomStringValidate	public	function	Callback for random string validation.
RefreshVariablesTrait::refreshVariables	protected	function	Refreshes in-memory configuration and state information.	1
SessionTestTrait::$sessionName	protected	property	The name of the session cookie.
SessionTestTrait::generateSessionName	protected	function	Generates a session cookie name.
SessionTestTrait::getSessionName	protected	function	Returns the session name in use on the child site.
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.	1
TestRequirementsTrait::getDrupalRoot	protected static	function	Returns the Drupal root directory.
TestSetupTrait::$configSchemaCheckerExclusions	protected static	property	An array of config object names that are excluded from schema checking.
TestSetupTrait::$container	protected	property	The dependency injection container used in the test.
TestSetupTrait::$kernel	protected	property	The DrupalKernel instance used in the test.
TestSetupTrait::$originalSite	protected	property	The site directory of the original parent site.
TestSetupTrait::$privateFilesDirectory	protected	property	The private file directory for the test environment.
TestSetupTrait::$publicFilesDirectory	protected	property	The public file directory for the test environment.
TestSetupTrait::$siteDirectory	protected	property	The site directory of this test run.
TestSetupTrait::$strictConfigSchema	protected	property	Set to TRUE to strict check all configuration saved.	1
TestSetupTrait::$tempFilesDirectory	protected	property	The temporary file directory for the test environment.
TestSetupTrait::$testId	protected	property	The test run ID.
TestSetupTrait::changeDatabasePrefix	protected	function	Changes the database connection to the prefixed one.
TestSetupTrait::getConfigSchemaExclusions	protected	function	Gets the config schema exclusions for this test.
TestSetupTrait::getDatabaseConnection	public static	function	Returns the database connection to the site running Simpletest.
TestSetupTrait::prepareDatabasePrefix	protected	function	Generates a database prefix for running tests.	1
UiHelperTrait::$loggedInUser	protected	property	The current user logged in using the Mink controlled browser.
UiHelperTrait::$maximumMetaRefreshCount	protected	property	The number of meta refresh redirects to follow, or NULL if unlimited.
UiHelperTrait::$metaRefreshCount	protected	property	The number of meta refresh redirects followed during ::drupalGet().
UiHelperTrait::assertSession	public	function	Returns WebAssert object.	1
UiHelperTrait::buildUrl	protected	function	Builds an absolute URL from a system path or a URL object.
UiHelperTrait::checkForMetaRefresh	protected	function	Checks for meta refresh tag and if found call drupalGet() recursively.
UiHelperTrait::click	protected	function	Clicks the element with the given CSS selector.
UiHelperTrait::clickLink	protected	function	Follows a link by complete name.
UiHelperTrait::cssSelect	protected	function	Searches elements using a CSS selector in the raw content.
UiHelperTrait::cssSelectToXpath	protected	function	Translates a CSS expression to its XPath equivalent.
UiHelperTrait::drupalGet	protected	function	Retrieves a Drupal path or an absolute path.	2
UiHelperTrait::drupalLogin	protected	function	Logs in a user using the Mink controlled browser.
UiHelperTrait::drupalLogout	protected	function	Logs a user out of the Mink controlled browser and confirms.
UiHelperTrait::drupalPostForm Deprecated	protected	function	Executes a form submission.
UiHelperTrait::drupalUserIsLoggedIn	protected	function	Returns whether a given user account is logged in.
UiHelperTrait::getAbsoluteUrl	protected	function	Takes a path and returns an absolute path.
UiHelperTrait::getTextContent	protected	function	Retrieves the plain-text content from the current page.
UiHelperTrait::getUrl	protected	function	Get the current URL from the browser.
UiHelperTrait::isTestUsingGuzzleClient	protected	function	Determines if test is using DrupalTestBrowser.
UiHelperTrait::prepareRequest	protected	function	Prepare for a request to testing site.	1
UiHelperTrait::submitForm	protected	function	Fills and submits a form.
UserCreationTrait::checkPermissions	protected	function	Checks whether a given list of permission names is valid.
UserCreationTrait::createAdminRole	protected	function	Creates an administrative role.
UserCreationTrait::createRole	protected	function	Creates a role with specified permissions. Aliased as: drupalCreateRole
UserCreationTrait::createUser	protected	function	Create a user with a given set of permissions. Aliased as: drupalCreateUser
UserCreationTrait::grantPermissions	protected	function	Grant permissions to a user role.
UserCreationTrait::setCurrentUser	protected	function	Switch the current logged in user.
UserCreationTrait::setUpCurrentUser	protected	function	Creates a random user account and sets it as current user.
XdebugRequestTrait::extractCookiesFromRequest	protected	function	Adds xdebug cookies, from request setup.

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class DownloadTest in Drupal 9

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