<?php

namespace Drupal\Tests\field_ui\Kernel;

use Drupal\Component\Render\FormattableMarkup;
use Drupal\Core\Cache\Cache;
use Drupal\Core\Database\Database;
use Drupal\Core\Entity\Display\EntityDisplayInterface;
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\Core\Entity\Entity\EntityFormDisplay;
use Drupal\Core\Entity\Entity\EntityViewDisplay;
use Drupal\Core\Entity\Entity\EntityViewMode;
use Drupal\field\Entity\FieldConfig;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\node\Entity\NodeType;
use Drupal\KernelTests\KernelTestBase;
use Drupal\user\Entity\Role;

/**
 * Tests the entity display configuration entities.
 *
 * @group field_ui
 */
class EntityDisplayTest extends KernelTestBase {

  /**
   * Modules to install.
   *
   * @var string[]
   */
  public static $modules = ['field_ui', 'field', 'entity_test', 'user', 'text', 'field_test', 'node', 'system'];

  protected function setUp() {
    parent::setUp();
    $this->installEntitySchema('entity_test');
    $this->installEntitySchema('node');
    $this->installEntitySchema('user');
    $this->installConfig(['field', 'node', 'user']);
  }

  /**
   * Tests basic CRUD operations on entity display objects.
   */
  public function testEntityDisplayCRUD() {
    $display = EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'default',
    ]);

    $expected = [];

    // Check that providing no 'weight' results in the highest current weight
    // being assigned. The 'name' field's formatter has weight -5, therefore
    // these follow.
    $expected['component_1'] = ['weight' => -4, 'settings' => [], 'third_party_settings' => []];
    $expected['component_2'] = ['weight' => -3, 'settings' => [], 'third_party_settings' => []];
    $display->setComponent('component_1');
    $display->setComponent('component_2');
    $this->assertEqual($display->getComponent('component_1'), $expected['component_1']);
    $this->assertEqual($display->getComponent('component_2'), $expected['component_2']);

    // Check that arbitrary options are correctly stored.
    $expected['component_3'] = ['weight' => 10, 'third_party_settings' => ['field_test' => ['foo' => 'bar']], 'settings' => []];
    $display->setComponent('component_3', $expected['component_3']);
    $this->assertEqual($display->getComponent('component_3'), $expected['component_3']);

    // Check that the display can be properly saved and read back.
    $display->save();
    $display = EntityViewDisplay::load($display->id());
    foreach (['component_1', 'component_2', 'component_3'] as $name) {
      $expected[$name]['region'] = 'content';
      $this->assertEqual($display->getComponent($name), $expected[$name]);
    }

    // Ensure that third party settings were added to the config entity.
    // These are added by entity_test_entity_presave() implemented in
    // entity_test module.
    $this->assertEqual('bar', $display->getThirdPartySetting('entity_test', 'foo'), 'Third party settings were added to the entity view display.');

    // Check that getComponents() returns options for all components.
    $expected['name'] = [
      'label' => 'hidden',
      'type' => 'string',
      'weight' => -5,
      'settings' => [
        'link_to_entity' => FALSE,
      ],
      'third_party_settings' => [],
      'region' => 'content',
    ];
    $this->assertEqual($display->getComponents(), $expected);

    // Check that a component can be removed.
    $display->removeComponent('component_3');
    $this->assertNULL($display->getComponent('component_3'));

    // Check that the removal is correctly persisted.
    $display->save();
    $display = EntityViewDisplay::load($display->id());
    $this->assertNULL($display->getComponent('component_3'));

    // Check that createCopy() creates a new component that can be correctly
    // saved.
    EntityViewMode::create(['id' => $display->getTargetEntityTypeId() . '.other_view_mode', 'targetEntityType' => $display->getTargetEntityTypeId()])->save();
    $new_display = $display->createCopy('other_view_mode');
    $new_display->save();
    $new_display = EntityViewDisplay::load($new_display->id());
    $dependencies = $new_display->calculateDependencies()->getDependencies();
    $this->assertEqual(['config' => ['core.entity_view_mode.entity_test.other_view_mode'], 'module' => ['entity_test']], $dependencies);
    $this->assertEqual($new_display->getTargetEntityTypeId(), $display->getTargetEntityTypeId());
    $this->assertEqual($new_display->getTargetBundle(), $display->getTargetBundle());
    $this->assertEqual($new_display->getMode(), 'other_view_mode');
    $this->assertEqual($new_display->getComponents(), $display->getComponents());
  }

  /**
   * Test sorting of components by name on basic CRUD operations
   */
  public function testEntityDisplayCRUDSort() {
    $display = EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'default',
    ]);
    $display->setComponent('component_3');
    $display->setComponent('component_1');
    $display->setComponent('component_2');
    $display->save();
    $components = array_keys($display->getComponents());
    // The name field is not configurable so will be added automatically.
    $expected = [0 => 'component_1', 1 => 'component_2', 2 => 'component_3', 'name'];
    $this->assertIdentical($components, $expected);
  }

  /**
   * @covers \Drupal\Core\Entity\EntityDisplayRepository::getViewDisplay
   */
  public function testEntityGetDisplay() {
    $display_repository = $this->container->get('entity_display.repository');

    // Check that getViewDisplay() returns a fresh object when no configuration
    // entry exists.
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test');
    $this->assertTrue($display->isNew());

    // Add some components and save the display.
    $display->setComponent('component_1', ['weight' => 10, 'settings' => []])
      ->save();

    // Check that getViewDisplay() returns the correct object.
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test');
    $this->assertFalse($display->isNew());
    $this->assertEqual($display->id(), 'entity_test.entity_test.default');
    $this->assertEqual($display->getComponent('component_1'), ['weight' => 10, 'settings' => [], 'third_party_settings' => [], 'region' => 'content']);
  }

  /**
   * Tests the behavior of a field component within an entity display object.
   */
  public function testExtraFieldComponent() {
    entity_test_create_bundle('bundle_with_extra_fields');
    $display = EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'bundle_with_extra_fields',
      'mode' => 'default',
    ]);

    // Check that the default visibility taken into account for extra fields
    // unknown in the display.
    $this->assertEqual(
      $display->getComponent('display_extra_field'),
      [
        'weight' => 5,
        'region' => 'content',
        'settings' => [],
        'third_party_settings' => [],
      ]
    );
    $this->assertNull($display->getComponent('display_extra_field_hidden'));

    // Check that setting explicit options overrides the defaults.
    $display->removeComponent('display_extra_field');
    $display->setComponent('display_extra_field_hidden', ['weight' => 10]);
    $this->assertNull($display->getComponent('display_extra_field'));
    $this->assertEqual($display->getComponent('display_extra_field_hidden'), ['weight' => 10, 'settings' => [], 'third_party_settings' => []]);
  }

  /**
   * Tests the behavior of an extra field component with initial invalid values.
   */
  public function testExtraFieldComponentInitialInvalidConfig() {
    entity_test_create_bundle('bundle_with_extra_fields');
    $display = EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'bundle_with_extra_fields',
      'mode' => 'default',
      // Add the extra field to the initial config, without a 'type'.
      'content' => [
        'display_extra_field' => [
          'weight' => 5,
        ],
      ],
    ]);

    // Check that the default visibility taken into account for extra fields
    // unknown in the display that were included in the initial config.
    $this->assertEqual($display->getComponent('display_extra_field'), ['weight' => 5, 'region' => 'content']);
    $this->assertNull($display->getComponent('display_extra_field_hidden'));

    // Check that setting explicit options overrides the defaults.
    $display->removeComponent('display_extra_field');
    $display->setComponent('display_extra_field_hidden', ['weight' => 10]);
    $this->assertNull($display->getComponent('display_extra_field'));
    $this->assertEqual($display->getComponent('display_extra_field_hidden'), ['weight' => 10, 'settings' => [], 'third_party_settings' => []]);
  }

  /**
   * Tests the behavior of a field component within an entity display object.
   */
  public function testFieldComponent() {
    $field_name = 'test_field';
    // Create a field storage and a field.
    $field_storage = FieldStorageConfig::create([
      'field_name' => $field_name,
      'entity_type' => 'entity_test',
      'type' => 'test_field',
    ]);
    $field_storage->save();
    $field = FieldConfig::create([
      'field_storage' => $field_storage,
      'bundle' => 'entity_test',
    ]);
    $field->save();

    $display = EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'default',
    ]);

    // Check that providing no options results in default values being used.
    $display->setComponent($field_name);
    $field_type_info = \Drupal::service('plugin.manager.field.field_type')->getDefinition($field_storage->getType());
    $default_formatter = $field_type_info['default_formatter'];
    $formatter_settings = \Drupal::service('plugin.manager.field.formatter')->getDefaultSettings($default_formatter);
    $expected = [
      'weight' => -4,
      'label' => 'above',
      'type' => $default_formatter,
      'settings' => $formatter_settings,
      'third_party_settings' => [],
    ];
    $this->assertEqual($display->getComponent($field_name), $expected);

    // Check that the getFormatter() method returns the correct formatter plugin.
    $formatter = $display->getRenderer($field_name);
    $this->assertEqual($formatter->getPluginId(), $default_formatter);
    $this->assertEqual($formatter->getSettings(), $formatter_settings);

    // Check that the formatter is statically persisted, by assigning an
    // arbitrary property and reading it back.
    $random_value = $this->randomString();
    $formatter->randomValue = $random_value;
    $formatter = $display->getRenderer($field_name);
    $this->assertEqual($formatter->randomValue, $random_value);

    // Check that changing the definition creates a new formatter.
    $display->setComponent($field_name, [
      'type' => 'field_test_multiple',
    ]);
    $formatter = $display->getRenderer($field_name);
    $this->assertEqual($formatter->getPluginId(), 'field_test_multiple');
    $this->assertFalse(isset($formatter->randomValue));

    // Check that the display has dependencies on the field and the module that
    // provides the formatter.
    $dependencies = $display->calculateDependencies()->getDependencies();
    $this->assertEqual(['config' => ['field.field.entity_test.entity_test.test_field'], 'module' => ['entity_test', 'field_test']], $dependencies);
  }

  /**
   * Tests the behavior of a field component for a base field.
   */
  public function testBaseFieldComponent() {
    $display = EntityViewDisplay::create([
      'targetEntityType' => 'entity_test_base_field_display',
      'bundle' => 'entity_test_base_field_display',
      'mode' => 'default',
    ]);

    // Check that default options are correctly filled in.
    $formatter_settings = \Drupal::service('plugin.manager.field.formatter')->getDefaultSettings('text_default');
    $expected = [
      'test_no_display' => NULL,
      'test_display_configurable' => [
        'label' => 'above',
        'type' => 'text_default',
        'settings' => $formatter_settings,
        'third_party_settings' => [],
        'weight' => 10,
        'region' => 'content',
      ],
      'test_display_non_configurable' => [
        'label' => 'above',
        'type' => 'text_default',
        'settings' => $formatter_settings,
        'third_party_settings' => [],
        'weight' => 11,
        'region' => 'content',
      ],
    ];
    foreach ($expected as $field_name => $options) {
      $this->assertEqual($display->getComponent($field_name), $options);
    }

    // Check that saving the display only writes data for fields whose display
    // is configurable.
    $display->save();
    $config = $this->config('core.entity_view_display.' . $display->id());
    $data = $config->get();
    $this->assertFalse(isset($data['content']['test_no_display']));
    $this->assertFalse(isset($data['hidden']['test_no_display']));
    $this->assertEqual($data['content']['test_display_configurable'], $expected['test_display_configurable']);
    $this->assertFalse(isset($data['content']['test_display_non_configurable']));
    $this->assertFalse(isset($data['hidden']['test_display_non_configurable']));

    // Check that defaults are correctly filled when loading the display.
    $display = EntityViewDisplay::load($display->id());
    foreach ($expected as $field_name => $options) {
      $this->assertEqual($display->getComponent($field_name), $options);
    }

    // Check that data manually written for fields whose display is not
    // configurable is discarded when loading the display.
    $data['content']['test_display_non_configurable'] = $expected['test_display_non_configurable'];
    $data['content']['test_display_non_configurable']['weight']++;
    $config->setData($data)->save();
    $display = EntityViewDisplay::load($display->id());
    foreach ($expected as $field_name => $options) {
      $this->assertEqual($display->getComponent($field_name), $options);
    }
  }

  /**
   * Tests deleting a bundle.
   */
  public function testDeleteBundle() {
    // Create a node bundle, display and form display object.
    $type = NodeType::create(['type' => 'article']);
    $type->save();
    node_add_body_field($type);
    /** @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface $display_repository */
    $display_repository = \Drupal::service('entity_display.repository');
    $display_repository->getViewDisplay('node', 'article')->save();
    $display_repository->getFormDisplay('node', 'article')->save();

    // Delete the bundle.
    $type->delete();
    $display = EntityViewDisplay::load('node.article.default');
    $this->assertFalse((bool) $display);
    $form_display = EntityFormDisplay::load('node.article.default');
    $this->assertFalse((bool) $form_display);
  }

  /**
   * Tests deleting field.
   */
  public function testDeleteField() {
    $field_name = 'test_field';
    // Create a field storage and a field.
    $field_storage = FieldStorageConfig::create([
      'field_name' => $field_name,
      'entity_type' => 'entity_test',
      'type' => 'test_field',
    ]);
    $field_storage->save();
    $field = FieldConfig::create([
      'field_storage' => $field_storage,
      'bundle' => 'entity_test',
    ]);
    $field->save();

    // Create default and teaser entity display.
    EntityViewMode::create(['id' => 'entity_test.teaser', 'targetEntityType' => 'entity_test'])->save();
    EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'default',
    ])->setComponent($field_name)->save();
    EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'teaser',
    ])->setComponent($field_name)->save();

    /** @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface $display_repository */
    $display_repository = \Drupal::service('entity_display.repository');

    // Check the component exists.
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test');
    $this->assertNotEmpty($display->getComponent($field_name));
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test', 'teaser');
    $this->assertNotEmpty($display->getComponent($field_name));

    // Delete the field.
    $field->delete();

    // Check that the component has been removed from the entity displays.
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test');
    $this->assertNull($display->getComponent($field_name));
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test', 'teaser');
    $this->assertNull($display->getComponent($field_name));
  }

  /**
   * Tests \Drupal\Core\Entity\EntityDisplayBase::onDependencyRemoval().
   */
  public function testOnDependencyRemoval() {
    $this->enableModules(['field_plugins_test']);

    $field_name = 'test_field';
    // Create a field.
    $field_storage = FieldStorageConfig::create([
      'field_name' => $field_name,
      'entity_type' => 'entity_test',
      'type' => 'text',
    ]);
    $field_storage->save();
    $field = FieldConfig::create([
      'field_storage' => $field_storage,
      'bundle' => 'entity_test',
    ]);
    $field->save();

    EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'default',
    ])->setComponent($field_name, ['type' => 'field_plugins_test_text_formatter'])->save();

    /** @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface $display_repository */
    $display_repository = \Drupal::service('entity_display.repository');

    // Check the component exists and is of the correct type.
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test');
    $this->assertEqual($display->getComponent($field_name)['type'], 'field_plugins_test_text_formatter');

    // Removing the field_plugins_test module should change the component to use
    // the default formatter for test fields.
    \Drupal::service('config.manager')->uninstall('module', 'field_plugins_test');
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test');
    $this->assertEqual($display->getComponent($field_name)['type'], 'text_default');

    // Removing the text module should remove the field from the view display.
    \Drupal::service('config.manager')->uninstall('module', 'text');
    $display = $display_repository->getViewDisplay('entity_test', 'entity_test');
    $this->assertNull($display->getComponent($field_name));
  }

  /**
   * Ensure that entity view display changes invalidates cache tags.
   */
  public function testEntityDisplayInvalidateCacheTags() {
    $cache = \Drupal::cache();
    $cache->set('cid', 'kittens', Cache::PERMANENT, ['config:entity_view_display_list']);
    $display = EntityViewDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'default',
    ]);
    $display->setComponent('kitten');
    $display->save();
    $this->assertFalse($cache->get('cid'));
  }

  /**
   * Test getDisplayModeOptions().
   */
  public function testGetDisplayModeOptions() {
    NodeType::create(['type' => 'article'])->save();

    EntityViewDisplay::create([
      'targetEntityType' => 'node',
      'bundle' => 'article',
      'mode' => 'default',
    ])->setStatus(TRUE)->save();

    $display_teaser = EntityViewDisplay::create([
      'targetEntityType' => 'node',
      'bundle' => 'article',
      'mode' => 'teaser',
    ]);
    $display_teaser->save();

    EntityFormDisplay::create([
      'targetEntityType' => 'user',
      'bundle' => 'user',
      'mode' => 'default',
    ])->setStatus(TRUE)->save();

    $form_display_teaser = EntityFormDisplay::create([
      'targetEntityType' => 'user',
      'bundle' => 'user',
      'mode' => 'register',
    ]);
    $form_display_teaser->save();

    // Test getViewModeOptionsByBundle().
    $view_modes = \Drupal::service('entity_display.repository')->getViewModeOptionsByBundle('node', 'article');
    $this->assertEqual($view_modes, ['default' => 'Default']);
    $display_teaser->setStatus(TRUE)->save();
    $view_modes = \Drupal::service('entity_display.repository')->getViewModeOptionsByBundle('node', 'article');
    $this->assertEqual($view_modes, ['default' => 'Default', 'teaser' => 'Teaser']);

    // Test getFormModeOptionsByBundle().
    $form_modes = \Drupal::service('entity_display.repository')->getFormModeOptionsByBundle('user', 'user');
    $this->assertEqual($form_modes, ['default' => 'Default']);
    $form_display_teaser->setStatus(TRUE)->save();
    $form_modes = \Drupal::service('entity_display.repository')->getFormModeOptionsByBundle('user', 'user');
    $this->assertEqual($form_modes, ['default' => 'Default', 'register' => 'Register']);
  }

  /**
   * Tests components dependencies additions.
   */
  public function testComponentDependencies() {
    $this->enableModules(['dblog', 'color']);
    $this->installSchema('dblog', ['watchdog']);
    $this->installEntitySchema('user');
    /** @var \Drupal\user\RoleInterface[] $roles */
    $roles = [];
    // Create two arbitrary user roles.
    for ($i = 0; $i < 2; $i++) {
      $roles[$i] = Role::create([
        'id' => mb_strtolower($this->randomMachineName()),
        'label' => $this->randomString(),
      ]);
      $roles[$i]->save();
    }

    // Create a field of type 'test_field' attached to 'entity_test'.
    $field_name = mb_strtolower($this->randomMachineName());
    FieldStorageConfig::create([
      'field_name' => $field_name,
      'entity_type' => 'entity_test',
      'type' => 'test_field',
    ])->save();
    FieldConfig::create([
      'field_name' => $field_name,
      'entity_type' => 'entity_test',
      'bundle' => 'entity_test',
    ])->save();

    // Create a new form display without components.
    /** @var \Drupal\Core\Entity\Display\EntityFormDisplayInterface $form_display */
    $form_display = EntityFormDisplay::create([
      'targetEntityType' => 'entity_test',
      'bundle' => 'entity_test',
      'mode' => 'default',
    ]);
    $form_display->save();

    $dependencies = ['user.role.' . $roles[0]->id(), 'user.role.' . $roles[1]->id()];

    // The config object should not depend on none of the two $roles.
    $this->assertNoDependency('config', $dependencies[0], $form_display);
    $this->assertNoDependency('config', $dependencies[1], $form_display);

    // Add a widget of type 'test_field_widget'.
    $component = [
      'type' => 'test_field_widget',
      'settings' => [
        'test_widget_setting' => $this->randomString(),
        'role' => $roles[0]->id(),
        'role2' => $roles[1]->id(),
      ],
      'third_party_settings' => [
        'color' => ['foo' => 'bar'],
      ],
    ];
    $form_display->setComponent($field_name, $component);
    $form_display->save();

    // Now, the form display should depend on both user roles $roles.
    $this->assertDependency('config', $dependencies[0], $form_display);
    $this->assertDependency('config', $dependencies[1], $form_display);
    // The form display should depend on 'color' module.
    $this->assertDependency('module', 'color', $form_display);

    // Delete the first user role entity.
    $roles[0]->delete();

    // Reload the form display.
    $form_display = EntityFormDisplay::load($form_display->id());
    // The display exists.
    $this->assertFalse(empty($form_display));
    // The form display should not depend on $role[0] anymore.
    $this->assertNoDependency('config', $dependencies[0], $form_display);
    // The form display should depend on 'anonymous' user role.
    $this->assertDependency('config', 'user.role.anonymous', $form_display);
    // The form display should depend on 'color' module.
    $this->assertDependency('module', 'color', $form_display);

    // Manually trigger the removal of configuration belonging to the module
    // because KernelTestBase::disableModules() is not aware of this.
    $this->container->get('config.manager')->uninstall('module', 'color');
    // Uninstall 'color' module.
    $this->disableModules(['color']);

    // Reload the form display.
    $form_display = EntityFormDisplay::load($form_display->id());
    // The display exists.
    $this->assertFalse(empty($form_display));
    // The component is still enabled.
    $this->assertNotNull($form_display->getComponent($field_name));
    // The form display should not depend on 'color' module anymore.
    $this->assertNoDependency('module', 'color', $form_display);

    // Delete the 2nd user role entity.
    $roles[1]->delete();

    // Reload the form display.
    $form_display = EntityFormDisplay::load($form_display->id());
    // The display exists.
    $this->assertFalse(empty($form_display));
    // The component has been disabled.
    $this->assertNull($form_display->getComponent($field_name));
    $this->assertTrue($form_display->get('hidden')[$field_name]);
    // The correct warning message has been logged.
    $arguments = ['@display' => (string) t('Entity form display'), '@id' => $form_display->id(), '@name' => $field_name];
    $logged = (bool) Database::getConnection()->select('watchdog', 'w')
      ->fields('w', ['wid'])
      ->condition('type', 'system')
      ->condition('message', "@display '@id': Component '@name' was disabled because its settings depend on removed dependencies.")
      ->condition('variables', serialize($arguments))
      ->execute()
      ->fetchAll();
    $this->assertTrue($logged);
  }

  /**
   * Asserts that $key is a $type type dependency of $display config entity.
   *
   * @param string $type
   *   The dependency type: 'config', 'content', 'module' or 'theme'.
   * @param string $key
   *   The string to be checked.
   * @param \Drupal\Core\Entity\Display\EntityDisplayInterface $display
   *   The entity display object to get dependencies from.
   *
   * @return bool
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertDependency($type, $key, EntityDisplayInterface $display) {
    return $this->assertDependencyHelper(TRUE, $type, $key, $display);
  }

  /**
   * Asserts that $key is not a $type type dependency of $display config entity.
   *
   * @param string $type
   *   The dependency type: 'config', 'content', 'module' or 'theme'.
   * @param string $key
   *   The string to be checked.
   * @param \Drupal\Core\Entity\Display\EntityDisplayInterface $display
   *   The entity display object to get dependencies from.
   *
   * @return bool
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertNoDependency($type, $key, EntityDisplayInterface $display) {
    return $this->assertDependencyHelper(FALSE, $type, $key, $display);
  }

  /**
   * Provides a helper for dependency assertions.
   *
   * @param bool $assertion
   *   Assertion: positive or negative.
   * @param string $type
   *   The dependency type: 'config', 'content', 'module' or 'theme'.
   * @param string $key
   *   The string to be checked.
   * @param \Drupal\Core\Entity\Display\EntityDisplayInterface $display
   *   The entity display object to get dependencies from.
   *
   * @return bool
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertDependencyHelper($assertion, $type, $key, EntityDisplayInterface $display) {
    $all_dependencies = $display->getDependencies();
    $dependencies = !empty($all_dependencies[$type]) ? $all_dependencies[$type] : [];
    $context = $display instanceof EntityViewDisplayInterface ? 'View' : 'Form';
    $value = $assertion ? in_array($key, $dependencies) : !in_array($key, $dependencies);
    $args = ['@context' => $context, '@id' => $display->id(), '@type' => $type, '@key' => $key];
    $message = $assertion ? new FormattableMarkup("@context display '@id' depends on @type '@key'.", $args) : new FormattableMarkup("@context display '@id' do not depend on @type '@key'.", $args);
    return $this->assert($value, $message);
  }

}
