class DisplayApiTest in Drupal 9

Same name and namespace in other branches

8 core/modules/field/tests/src/Kernel/DisplayApiTest.php \Drupal\Tests\field\Kernel\DisplayApiTest

Tests the field display API.

@group field

Hierarchy

class \Drupal\KernelTests\KernelTestBase extends \PHPUnit\Framework\TestCase implements ServiceProviderInterface uses \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait, AssertContentTrait, AssertLegacyTrait, ConfigTestTrait, ExtensionListTestTrait, PhpUnitCompatibilityTrait, RandomGeneratorTrait, TestRequirementsTrait, PhpUnitWarnings
- class \Drupal\Tests\field\Kernel\FieldKernelTestBase
  - class \Drupal\Tests\field\Kernel\DisplayApiTest

Expanded class hierarchy of DisplayApiTest

File

core/modules/field/tests/src/Kernel/DisplayApiTest.php, line 16

Namespace

Drupal\Tests\field\Kernel

View source

class DisplayApiTest extends FieldKernelTestBase {

  /**
   * The field name to use in this test.
   *
   * @var string
   */
  protected $fieldName;

  /**
   * The field label to use in this test.
   *
   * @var string
   */
  protected $label;

  /**
   * The field cardinality to use in this test.
   *
   * @var int
   */
  protected $cardinality;

  /**
   * The field display options to use in this test.
   *
   * @var array
   */
  protected $displayOptions;

  /**
   * The test entity.
   *
   * @var \Drupal\Core\Entity\EntityInterface
   */
  protected $entity;

  /**
   * An array of random values, in the format expected for field values.
   *
   * @var array
   */
  protected $values;

  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'system',
  ];
  protected function setUp() : void {
    parent::setUp();

    // Create a field and its storage.
    $this->fieldName = 'test_field';
    $this->label = $this
      ->randomMachineName();
    $this->cardinality = 4;
    $field_storage = [
      'field_name' => $this->fieldName,
      'entity_type' => 'entity_test',
      'type' => 'test_field',
      'cardinality' => $this->cardinality,
    ];
    $field = [
      'field_name' => $this->fieldName,
      'entity_type' => 'entity_test',
      'bundle' => 'entity_test',
      'label' => $this->label,
    ];
    $this->displayOptions = [
      'default' => [
        'type' => 'field_test_default',
        'settings' => [
          'test_formatter_setting' => $this
            ->randomMachineName(),
        ],
      ],
      'teaser' => [
        'type' => 'field_test_default',
        'settings' => [
          'test_formatter_setting' => $this
            ->randomMachineName(),
        ],
      ],
    ];

    /** @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface $display_repository */
    $display_repository = \Drupal::service('entity_display.repository');
    FieldStorageConfig::create($field_storage)
      ->save();
    FieldConfig::create($field)
      ->save();

    // Create a display for the default view mode.
    $display_repository
      ->getViewDisplay($field['entity_type'], $field['bundle'])
      ->setComponent($this->fieldName, $this->displayOptions['default'])
      ->save();

    // Create a display for the teaser view mode.
    EntityViewMode::create([
      'id' => 'entity_test.teaser',
      'targetEntityType' => 'entity_test',
    ])
      ->save();
    $display_repository
      ->getViewDisplay($field['entity_type'], $field['bundle'], 'teaser')
      ->setComponent($this->fieldName, $this->displayOptions['teaser'])
      ->save();

    // Create an entity with values.
    $this->values = $this
      ->_generateTestFieldValues($this->cardinality);
    $this->entity = EntityTest::create();
    $this->entity->{$this->fieldName}
      ->setValue($this->values);
    $this->entity
      ->save();
  }

  /**
   * Tests the FieldItemListInterface::view() method.
   */
  public function testFieldItemListView() {
    $items = $this->entity
      ->get($this->fieldName);
    \Drupal::service('theme_installer')
      ->install([
      'classy',
    ]);
    $this
      ->config('system.theme')
      ->set('default', 'classy')
      ->save();

    // No display settings: check that default display settings are used.
    $build = $items
      ->view();
    $this
      ->render($build);
    $settings = \Drupal::service('plugin.manager.field.formatter')
      ->getDefaultSettings('field_test_default');
    $setting = $settings['test_formatter_setting'];
    $this
      ->assertText($this->label, 'Label was displayed.');
    foreach ($this->values as $delta => $value) {
      $this
        ->assertText($setting . '|' . $value['value'], new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }

    // Display settings: Check hidden field.
    $display = [
      'label' => 'hidden',
      'type' => 'field_test_multiple',
      'settings' => [
        'test_formatter_setting_multiple' => $this
          ->randomMachineName(),
        'alter' => TRUE,
      ],
    ];
    $build = $items
      ->view($display);
    $this
      ->render($build);
    $setting = $display['settings']['test_formatter_setting_multiple'];
    $this
      ->assertNoText($this->label, 'Label was not displayed.');
    $this
      ->assertText('field_test_entity_display_build_alter', 'Alter fired, display passed.');
    $this
      ->assertText('entity language is en', 'Language is placed onto the context.');
    $array = [];
    foreach ($this->values as $delta => $value) {
      $array[] = $delta . ':' . $value['value'];
    }
    $this
      ->assertText($setting . '|' . implode('|', $array), 'Values were displayed with expected setting.');

    // Display settings: Check visually_hidden field.
    $display = [
      'label' => 'visually_hidden',
      'type' => 'field_test_multiple',
      'settings' => [
        'test_formatter_setting_multiple' => $this
          ->randomMachineName(),
        'alter' => TRUE,
      ],
    ];
    $build = $items
      ->view($display);
    $this
      ->render($build);
    $setting = $display['settings']['test_formatter_setting_multiple'];
    $this
      ->assertRaw('visually-hidden', 'Label was visually hidden.');
    $this
      ->assertText('field_test_entity_display_build_alter', 'Alter fired, display passed.');
    $this
      ->assertText('entity language is en', 'Language is placed onto the context.');
    $array = [];
    foreach ($this->values as $delta => $value) {
      $array[] = $delta . ':' . $value['value'];
    }
    $this
      ->assertText($setting . '|' . implode('|', $array), 'Values were displayed with expected setting.');

    // Check the prepare_view steps are invoked.
    $display = [
      'label' => 'hidden',
      'type' => 'field_test_with_prepare_view',
      'settings' => [
        'test_formatter_setting_additional' => $this
          ->randomMachineName(),
      ],
    ];
    $build = $items
      ->view($display);
    $this
      ->render($build);
    $setting = $display['settings']['test_formatter_setting_additional'];
    $this
      ->assertNoText($this->label, 'Label was not displayed.');
    $this
      ->assertNoText('field_test_entity_display_build_alter', 'Alter not fired.');
    foreach ($this->values as $delta => $value) {
      $this
        ->assertText($setting . '|' . $value['value'] . '|' . ($value['value'] + 1), new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }

    // View mode: check that display settings specified in the display object
    // are used.
    $build = $items
      ->view('teaser');
    $this
      ->render($build);
    $setting = $this->displayOptions['teaser']['settings']['test_formatter_setting'];
    $this
      ->assertText($this->label, 'Label was displayed.');
    foreach ($this->values as $delta => $value) {
      $this
        ->assertText($setting . '|' . $value['value'], new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }

    // Unknown view mode: check that display settings for 'default' view mode
    // are used.
    $build = $items
      ->view('unknown_view_mode');
    $this
      ->render($build);
    $setting = $this->displayOptions['default']['settings']['test_formatter_setting'];
    $this
      ->assertText($this->label, 'Label was displayed.');
    foreach ($this->values as $delta => $value) {
      $this
        ->assertText($setting . '|' . $value['value'], new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }
  }

  /**
   * Tests the FieldItemInterface::view() method.
   */
  public function testFieldItemView() {

    // No display settings: check that default display settings are used.
    $settings = \Drupal::service('plugin.manager.field.formatter')
      ->getDefaultSettings('field_test_default');
    $setting = $settings['test_formatter_setting'];
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->fieldName}[$delta];
      $build = $item
        ->view();
      $this
        ->render($build);
      $this
        ->assertText($setting . '|' . $value['value'], new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }

    // Check that explicit display settings are used.
    $display = [
      'type' => 'field_test_multiple',
      'settings' => [
        'test_formatter_setting_multiple' => $this
          ->randomMachineName(),
      ],
    ];
    $setting = $display['settings']['test_formatter_setting_multiple'];
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->fieldName}[$delta];
      $build = $item
        ->view($display);
      $this
        ->render($build);
      $this
        ->assertText($setting . '|0:' . $value['value'], new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }

    // Check that prepare_view steps are invoked.
    $display = [
      'type' => 'field_test_with_prepare_view',
      'settings' => [
        'test_formatter_setting_additional' => $this
          ->randomMachineName(),
      ],
    ];
    $setting = $display['settings']['test_formatter_setting_additional'];
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->fieldName}[$delta];
      $build = $item
        ->view($display);
      $this
        ->render($build);
      $this
        ->assertText($setting . '|' . $value['value'] . '|' . ($value['value'] + 1), new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }

    // View mode: check that display settings specified in the field are used.
    $setting = $this->displayOptions['teaser']['settings']['test_formatter_setting'];
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->fieldName}[$delta];
      $build = $item
        ->view('teaser');
      $this
        ->render($build);
      $this
        ->assertText($setting . '|' . $value['value'], new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }

    // Unknown view mode: check that display settings for 'default' view mode
    // are used.
    $setting = $this->displayOptions['default']['settings']['test_formatter_setting'];
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->fieldName}[$delta];
      $build = $item
        ->view('unknown_view_mode');
      $this
        ->render($build);
      $this
        ->assertText($setting . '|' . $value['value'], new FormattableMarkup('Value @delta was displayed with expected setting.', [
        '@delta' => $delta,
      ]));
    }
  }

  /**
   * Tests that the prepareView() formatter method still fires for empty values.
   */
  public function testFieldEmpty() {

    // Uses \Drupal\field_test\Plugin\Field\FieldFormatter\TestFieldEmptyFormatter.
    $display = [
      'label' => 'hidden',
      'type' => 'field_empty_test',
      'settings' => [
        'test_empty_string' => '**EMPTY FIELD**' . $this
          ->randomMachineName(),
      ],
    ];

    // $this->entity is set by the setUp() method and by default contains 4
    // numeric values.  We only want to test the display of this one field.
    $build = $this->entity
      ->get($this->fieldName)
      ->view($display);
    $this
      ->render($build);

    // The test field by default contains values, so should not display the
    // default "empty" text.
    $this
      ->assertNoText($display['settings']['test_empty_string']);

    // Now remove the values from the test field and retest.
    $this->entity->{$this->fieldName} = [];
    $this->entity
      ->save();
    $build = $this->entity
      ->get($this->fieldName)
      ->view($display);
    $this
      ->render($build);

    // This time, as the field values have been removed, we *should* show the
    // default "empty" text.
    $this
      ->assertText($display['settings']['test_empty_string']);
  }

}

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::getUrl	protected	function	Get the current URL from the cURL handler.	1
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.
AssertLegacyTrait::assert Deprecated	protected	function
AssertLegacyTrait::assertEqual Deprecated	protected	function
AssertLegacyTrait::assertIdentical Deprecated	protected	function
AssertLegacyTrait::assertIdenticalObject Deprecated	protected	function
AssertLegacyTrait::assertNotEqual Deprecated	protected	function
AssertLegacyTrait::assertNotIdentical Deprecated	protected	function
AssertLegacyTrait::pass Deprecated	protected	function
AssertLegacyTrait::verbose Deprecated	protected	function
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.
DisplayApiTest::$cardinality	protected	property	The field cardinality to use in this test.
DisplayApiTest::$displayOptions	protected	property	The field display options to use in this test.
DisplayApiTest::$entity	protected	property	The test entity.
DisplayApiTest::$fieldName	protected	property	The field name to use in this test.
DisplayApiTest::$label	protected	property	The field label to use in this test.
DisplayApiTest::$modules	protected static	property	Modules to enable. Overrides FieldKernelTestBase::$modules
DisplayApiTest::$values	protected	property	An array of random values, in the format expected for field values.
DisplayApiTest::setUp	protected	function	Set the default field storage backend for fields created during tests. Overrides FieldKernelTestBase::setUp
DisplayApiTest::testFieldEmpty	public	function	Tests that the prepareView() formatter method still fires for empty values.
DisplayApiTest::testFieldItemListView	public	function	Tests the FieldItemListInterface::view() method.
DisplayApiTest::testFieldItemView	public	function	Tests the FieldItemInterface::view() method.
ExtensionListTestTrait::getModulePath	protected	function	Gets the path for the specified module.
ExtensionListTestTrait::getThemePath	protected	function	Gets the path for the specified theme.
FieldKernelTestBase::$fieldTestData	protected	property	Bag of created field storages and fields.
FieldKernelTestBase::assertFieldValues	protected	function	Assert that a field has the expected values in an entity.
FieldKernelTestBase::createFieldWithStorage	protected	function	Create a field and an associated field storage.
FieldKernelTestBase::entitySaveReload	protected	function	Saves and reloads an entity.
FieldKernelTestBase::entityValidateAndSave	protected	function	Validate and save entity. Fail if violations are found.
FieldKernelTestBase::_generateTestFieldValues	protected	function	Generate random values for a field_test field.
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::$configImporter	protected	property	@todo Move into Config test base class.	7
KernelTestBase::$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::$strictConfigSchema	protected	property	Set to TRUE to strict check all configuration saved.	6
KernelTestBase::$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.	3
KernelTestBase::getDatabasePrefix	public	function
KernelTestBase::getExtensionsForModules	private	function	Returns Extension objects for $modules to enable.
KernelTestBase::getModulesToEnable	private static	function	Returns the modules to enable for this test.
KernelTestBase::initFileCache	protected	function	Initializes the FileCache component.
KernelTestBase::installConfig	protected	function	Installs default configuration for a given list of modules.
KernelTestBase::installEntitySchema	protected	function	Installs the storage schema for a specific entity type.
KernelTestBase::installSchema	protected	function	Installs database tables from a module schema definition.
KernelTestBase::prepareTemplate	protected	function
KernelTestBase::register	public	function	Registers test-specific services. Overrides ServiceProviderInterface::register	24
KernelTestBase::render	protected	function	Renders a render array.	1
KernelTestBase::setInstallProfile	protected	function	Sets the install profile and rebuilds the container to update it.
KernelTestBase::setSetting	protected	function	Sets an in-memory Settings variable.
KernelTestBase::setUpBeforeClass	public static	function		1
KernelTestBase::setUpFilesystem	protected	function	Sets up the filesystem, so things like the file directory.	2
KernelTestBase::stop	protected	function	Stops test execution.
KernelTestBase::tearDown	protected	function		4
KernelTestBase::tearDownCloseDatabaseConnection	public	function	@after
KernelTestBase::vfsDump	protected	function	Dumps the current state of the virtual filesystem to STDOUT.
KernelTestBase::__sleep	public	function	Prevents serializing any properties.
PhpUnitWarnings::$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.
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.

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class DisplayApiTest in Drupal 9

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