PHP Unicode::strtolower方法代码示例

 public function testRecreateEntity()
 {
     $type_name = Unicode::strtolower($this->randomMachineName(16));
     $content_type = entity_create('node_type', array('type' => $type_name, 'name' => 'Node type one'));
     $content_type->save();
     node_add_body_field($content_type);
     /** @var \Drupal\Core\Config\StorageInterface $active */
     $active = $this->container->get('config.storage');
     /** @var \Drupal\Core\Config\StorageInterface $sync */
     $sync = $this->container->get('config.storage.sync');
     $config_name = $content_type->getEntityType()->getConfigPrefix() . '.' . $content_type->id();
     $this->copyConfig($active, $sync);
     // Delete the content type. This will also delete a field storage, a field,
     // an entity view display and an entity form display.
     $content_type->delete();
     $this->assertFalse($active->exists($config_name), 'Content type\'s old name does not exist active store.');
     // Recreate with the same type - this will have a different UUID.
     $content_type = entity_create('node_type', array('type' => $type_name, 'name' => 'Node type two'));
     $content_type->save();
     node_add_body_field($content_type);
     $this->configImporter->reset();
     // A node type, a field, an entity view display and an entity form display
     // will be recreated.
     $creates = $this->configImporter->getUnprocessedConfiguration('create');
     $deletes = $this->configImporter->getUnprocessedConfiguration('delete');
     $this->assertEqual(5, count($creates), 'There are 5 configuration items to create.');
     $this->assertEqual(5, count($deletes), 'There are 5 configuration items to delete.');
     $this->assertEqual(0, count($this->configImporter->getUnprocessedConfiguration('update')), 'There are no configuration items to update.');
     $this->assertIdentical($creates, array_reverse($deletes), 'Deletes and creates contain the same configuration names in opposite orders due to dependencies.');
     $this->configImporter->import();
     // Verify that there is nothing more to import.
     $this->assertFalse($this->configImporter->reset()->hasUnprocessedConfigurationChanges());
     $content_type = NodeType::load($type_name);
     $this->assertEqual('Node type one', $content_type->label());
 }

 /**
  * Tests configuration renaming.
  */
 public function testConfigurationRename()
 {
     $content_type = entity_create('node_type', array('type' => Unicode::strtolower($this->randomName(16)), 'name' => $this->randomName()));
     $content_type->save();
     $staged_type = $content_type->type;
     $active = $this->container->get('config.storage');
     $staging = $this->container->get('config.storage.staging');
     $config_name = $content_type->getEntityType()->getConfigPrefix() . '.' . $content_type->id();
     // Emulate a staging operation.
     $this->copyConfig($active, $staging);
     // Change the machine name of the content type.
     $content_type->type = Unicode::strtolower($this->randomName(8));
     $content_type->save();
     $active_type = $content_type->type;
     $renamed_config_name = $content_type->getEntityType()->getConfigPrefix() . '.' . $content_type->id();
     $this->assertTrue($active->exists($renamed_config_name), 'The content type has the new name in the active store.');
     $this->assertFalse($active->exists($config_name), "The content type's old name does not exist active store.");
     $this->configImporter()->reset();
     $this->assertEqual(0, count($this->configImporter()->getUnprocessedConfiguration('create')), 'There are no configuration items to create.');
     $this->assertEqual(0, count($this->configImporter()->getUnprocessedConfiguration('delete')), 'There are no configuration items to delete.');
     $this->assertEqual(0, count($this->configImporter()->getUnprocessedConfiguration('update')), 'There are no configuration items to update.');
     // We expect that changing the machine name of the content type will
     // rename five configuration entities: the node type, the body field
     // instance, two entity form displays, and the entity view display.
     // @see \Drupal\node\Entity\NodeType::postSave()
     $expected = array('node.type.' . $active_type . '::node.type.' . $staged_type, 'entity.form_display.node.' . $active_type . '.default::entity.form_display.node.' . $staged_type . '.default', 'entity.view_display.node.' . $active_type . '.default::entity.view_display.node.' . $staged_type . '.default', 'entity.view_display.node.' . $active_type . '.teaser::entity.view_display.node.' . $staged_type . '.teaser', 'field.instance.node.' . $active_type . '.body::field.instance.node.' . $staged_type . '.body');
     $renames = $this->configImporter()->getUnprocessedConfiguration('rename');
     $this->assertIdentical($expected, $renames);
     $this->drupalGet('admin/config/development/configuration');
     foreach ($expected as $rename) {
         $names = $this->configImporter()->getStorageComparer()->extractRenameNames($rename);
         $this->assertText(String::format('!source_name to !target_name', array('!source_name' => $names['old_name'], '!target_name' => $names['new_name'])));
         // Test that the diff link is present for each renamed item.
         $href = \Drupal::urlGenerator()->getPathFromRoute('config.diff', array('source_name' => $names['old_name'], 'target_name' => $names['new_name']));
         $this->assertLinkByHref($href);
         $hrefs[$rename] = $href;
     }
     // Ensure that the diff works for each renamed item.
     foreach ($hrefs as $rename => $href) {
         $this->drupalGet($href);
         $names = $this->configImporter()->getStorageComparer()->extractRenameNames($rename);
         $config_entity_type = \Drupal::service('config.manager')->getEntityTypeIdByName($names['old_name']);
         $entity_type = \Drupal::entityManager()->getDefinition($config_entity_type);
         $old_id = ConfigEntityStorage::getIDFromConfigName($names['old_name'], $entity_type->getConfigPrefix());
         $new_id = ConfigEntityStorage::getIDFromConfigName($names['new_name'], $entity_type->getConfigPrefix());
         // Because table columns can be on multiple lines, need to assert a regex
         // pattern rather than normal text.
         $id_key = $entity_type->getKey('id');
         $text = "{$id_key}: {$old_id}";
         $this->assertTextPattern('/\\-\\s+' . preg_quote($text, '/') . '/', "'-{$text}' found.");
         $text = "{$id_key}: {$new_id}";
         $this->assertTextPattern('/\\+\\s+' . preg_quote($text, '/') . '/', "'+{$text}' found.");
     }
     // Run the import.
     $this->drupalPostForm('admin/config/development/configuration', array(), t('Import all'));
     $this->assertText(t('There are no configuration changes.'));
     $this->assertFalse(entity_load('node_type', $active_type), 'The content no longer exists with the old name.');
     $content_type = entity_load('node_type', $staged_type);
     $this->assertIdentical($staged_type, $content_type->type);
 }

 /**
  * Tests that date formats cannot be created with invalid machine names.
  */
 public function testDateFormatsMachineNameAllowedValues()
 {
     // Try to create a date format with a not allowed character to test the date
     // format specific machine name replace pattern.
     $edit = array('label' => 'Something Not Allowed', 'id' => 'something.bad', 'date_format_pattern' => 'Y-m-d');
     $this->drupalPostForm('admin/config/regional/date-time/formats/add', $edit, t('Add format'));
     $this->assertText(t('The machine-readable name must be unique, and can only contain lowercase letters, numbers, and underscores. Additionally, it can not be the reserved word "custom".'), 'It is not possible to create a date format with the machine name that has any character other than lowercase letters, digits or underscore.');
     // Try to create a date format with the reserved machine name "custom".
     $edit = array('label' => 'Custom', 'id' => 'custom', 'date_format_pattern' => 'Y-m-d');
     $this->drupalPostForm('admin/config/regional/date-time/formats/add', $edit, t('Add format'));
     $this->assertText(t('The machine-readable name must be unique, and can only contain lowercase letters, numbers, and underscores. Additionally, it can not be the reserved word "custom".'), 'It is not possible to create a date format with the machine name "custom".');
     // Try to create a date format with a machine name, "fallback", that
     // already exists.
     $edit = array('label' => 'Fallback', 'id' => 'fallback', 'date_format_pattern' => 'j/m/Y');
     $this->drupalPostForm('admin/config/regional/date-time/formats/add', $edit, t('Add format'));
     $this->assertText(t('The machine-readable name is already in use. It must be unique.'), 'It is not possible to create a date format with the machine name "fallback". It is a built-in format that already exists.');
     // Create a date format with a machine name distinct from the previous two.
     $id = Unicode::strtolower($this->randomMachineName(16));
     $edit = array('label' => $this->randomMachineName(16), 'id' => $id, 'date_format_pattern' => 'd/m/Y');
     $this->drupalPostForm('admin/config/regional/date-time/formats/add', $edit, t('Add format'));
     $this->assertText(t('Custom date format added.'), 'It is possible to create a date format with a new machine name.');
     // Try to create a date format with same machine name as the previous one.
     $edit = array('label' => $this->randomMachineName(16), 'id' => $id, 'date_format_pattern' => 'd-m-Y');
     $this->drupalPostForm('admin/config/regional/date-time/formats/add', $edit, t('Add format'));
     $this->assertText(t('The machine-readable name is already in use. It must be unique.'), 'It is not possible to create a new date format with an existing machine name.');
 }

 /**
  * Tests configuration options and the site-wide contact form.
  */
 public function testContactStorage()
 {
     // Create and login administrative user.
     $admin_user = $this->drupalCreateUser(array('access site-wide contact form', 'administer contact forms', 'administer users', 'administer account settings', 'administer contact_message fields'));
     $this->drupalLogin($admin_user);
     // Create first valid contact form.
     $mail = 'simpletest@example.com';
     $this->addContactForm($id = Unicode::strtolower($this->randomMachineName(16)), $label = $this->randomMachineName(16), implode(',', array($mail)), '', TRUE, ['send_a_pony' => 1]);
     $this->assertRaw(t('Contact form %label has been added.', array('%label' => $label)));
     // Ensure that anonymous can submit site-wide contact form.
     user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, array('access site-wide contact form'));
     $this->drupalLogout();
     $this->drupalGet('contact');
     $this->assertText(t('Your email address'));
     $this->assertNoText(t('Form'));
     $this->submitContact($name = $this->randomMachineName(16), $mail, $subject = $this->randomMachineName(16), $id, $message = $this->randomMachineName(64));
     $this->assertText(t('Your message has been sent.'));
     $messages = Message::loadMultiple();
     /** @var \Drupal\contact\Entity\Message $message */
     $message = reset($messages);
     $this->assertEqual($message->getContactForm()->id(), $id);
     $this->assertTrue($message->getContactForm()->getThirdPartySetting('contact_storage_test', 'send_a_pony', FALSE));
     $this->assertEqual($message->getSenderName(), $name);
     $this->assertEqual($message->getSubject(), $subject);
     $this->assertEqual($message->getSenderMail(), $mail);
     $config = $this->config("contact.form.{$id}");
     $this->assertEqual($config->get('id'), $id);
 }

 /**
  * Tests term language settings for vocabulary terms are saved and updated.
  */
 function testVocabularyDefaultLanguageForTerms()
 {
     // Add a new vocabulary and check that the default language settings are for
     // the terms are saved.
     $edit = array('name' => $this->randomMachineName(), 'vid' => Unicode::strtolower($this->randomMachineName()), 'default_language[langcode]' => 'bb', 'default_language[language_alterable]' => TRUE);
     $vid = $edit['vid'];
     $this->drupalPostForm('admin/structure/taxonomy/add', $edit, t('Save'));
     // Check that the vocabulary was actually created.
     $this->drupalGet('admin/structure/taxonomy/manage/' . $edit['vid']);
     $this->assertResponse(200, 'The vocabulary has been created.');
     // Check that the language settings were saved.
     $language_settings = ContentLanguageSettings::loadByEntityTypeBundle('taxonomy_term', $edit['vid']);
     $this->assertEqual($language_settings->getDefaultLangcode(), 'bb', 'The langcode was saved.');
     $this->assertTrue($language_settings->isLanguageAlterable(), 'The visibility setting was saved.');
     // Check that the correct options are selected in the interface.
     $this->assertOptionSelected('edit-default-language-langcode', 'bb', 'The correct default language for the terms of this vocabulary is selected.');
     $this->assertFieldChecked('edit-default-language-language-alterable', 'Show language selection option is checked.');
     // Edit the vocabulary and check that the new settings are updated.
     $edit = array('default_language[langcode]' => 'aa', 'default_language[language_alterable]' => FALSE);
     $this->drupalPostForm('admin/structure/taxonomy/manage/' . $vid, $edit, t('Save'));
     // And check again the settings and also the interface.
     $language_settings = ContentLanguageSettings::loadByEntityTypeBundle('taxonomy_term', $vid);
     $this->assertEqual($language_settings->getDefaultLangcode(), 'aa', 'The langcode was saved.');
     $this->assertFalse($language_settings->isLanguageAlterable(), 'The visibility setting was saved.');
     $this->drupalGet('admin/structure/taxonomy/manage/' . $vid);
     $this->assertOptionSelected('edit-default-language-langcode', 'aa', 'The correct default language for the terms of this vocabulary is selected.');
     $this->assertNoFieldChecked('edit-default-language-language-alterable', 'Show language selection option is not checked.');
     // Check that language settings are changed after editing vocabulary.
     $edit = array('name' => $this->randomMachineName(), 'default_language[langcode]' => 'authors_default', 'default_language[language_alterable]' => FALSE);
     $this->drupalPostForm('admin/structure/taxonomy/manage/' . $vid, $edit, t('Save'));
     // Check that we have the new settings.
     $new_settings = ContentLanguageSettings::loadByEntityTypeBundle('taxonomy_term', $vid);
     $this->assertEqual($new_settings->getDefaultLangcode(), 'authors_default', 'The langcode was saved.');
     $this->assertFalse($new_settings->isLanguageAlterable(), 'The new visibility setting was saved.');
 }

 protected function setUp()
 {
     parent::setUp();
     $this->installEntitySchema('taxonomy_term');
     // We want an entity reference field. It needs a vocabulary, terms, a field
     // storage and a field. First, create the vocabulary.
     $vocabulary = entity_create('taxonomy_vocabulary', array('vid' => Unicode::strtolower($this->randomMachineName())));
     $vocabulary->save();
     // Second, create the field.
     entity_test_create_bundle('test_bundle');
     $this->fieldName = strtolower($this->randomMachineName());
     $handler_settings = array('target_bundles' => array($vocabulary->id() => $vocabulary->id()), 'auto_create' => TRUE);
     $this->createEntityReferenceField('entity_test', 'test_bundle', $this->fieldName, NULL, 'taxonomy_term', 'default', $handler_settings);
     // Create two terms and also two accounts.
     for ($i = 0; $i <= 1; $i++) {
         $term = entity_create('taxonomy_term', array('name' => $this->randomMachineName(), 'vid' => $vocabulary->id()));
         $term->save();
         $this->terms[] = $term;
         $this->accounts[] = $this->createUser();
     }
     // Create three entity_test entities, the 0th entity will point to the
     // 0th account and 0th term, the 1st and 2nd entity will point to the
     // 1st account and 1st term.
     for ($i = 0; $i <= 2; $i++) {
         $entity = entity_create('entity_test', array('type' => 'test_bundle'));
         $entity->name->value = $this->randomMachineName();
         $index = $i ? 1 : 0;
         $entity->user_id->target_id = $this->accounts[$index]->id();
         $entity->{$this->fieldName}->target_id = $this->terms[$index]->id();
         $entity->save();
         $this->entities[] = $entity;
     }
     $this->factory = \Drupal::service('entity.query');
 }

  /**
   * Tests the creation of a server and an index.
   */
  public function testServerAndIndexCreation() {
    // Test whether a newly created server appears on the overview page.
    $server = $this->getTestServer();

    $this->drupalGet($this->overviewPageUrl);

    $this->assertText($server->label(), 'Server present on overview page.');
    $this->assertRaw($server->get('description'), 'Description is present');
    $this->assertFieldByXPath('//tr[contains(@class,"' . Html::cleanCssIdentifier($server->getEntityTypeId() . '-' . $server->id()) . '") and contains(@class, "search-api-list-enabled")]', NULL, 'Server is in proper table');

    // Test whether a newly created index appears on the overview page.
    $index = $this->getTestIndex();

    $this->drupalGet($this->overviewPageUrl);

    $this->assertText($index->label(), 'Index present on overview page.');
    $this->assertRaw($index->get('description'), 'Index description is present');
    $this->assertFieldByXPath('//tr[contains(@class,"' . Html::cleanCssIdentifier($index->getEntityTypeId() . '-' . $index->id()) . '") and contains(@class, "search-api-list-enabled")]', NULL, 'Index is in proper table');

    // Test that an entity without bundles can be used as data source.
    // @todo Why is this here? This hasn't got anything to do with the overview.
    $edit = array(
      'name' => $this->randomMachineName(),
      'id' => Unicode::strtolower($this->randomMachineName()),
      'datasources[]' => 'entity:user',
    );
    $this->drupalPostForm('admin/config/search/search-api/add-index', $edit, $this->t('Save'));
    $this->assertText($this->t('The index was successfully saved.'));
    $this->assertText($edit['name']);
  }

  /**
   * Test Pathauto cleanup in File (Field) Paths.
   */
  public function testPathauto() {
    // Create a File field.
    $field_name = Unicode::strtolower($this->randomMachineName());

    $third_party_settings['filefield_paths']['file_path']['value'] = 'node/[node:title]';
    $third_party_settings['filefield_paths']['file_path']['options']['pathauto'] = TRUE;
    $third_party_settings['filefield_paths']['file_name']['value'] = '[node:title].[file:ffp-extension-original]';
    $third_party_settings['filefield_paths']['file_name']['options']['pathauto'] = TRUE;

    $this->createFileField($field_name, 'node', $this->contentType, [], [], $third_party_settings);

    // Create a node with a test file.
    /** @var \Drupal\file\Entity\File $test_file */
    $test_file = $this->getTestFile('text');
    $edit['title[0][value]'] = $this->randomString() . ' ' . $this->randomString();

    $edit['files[' . $field_name . '_0]'] = \Drupal::service('file_system')
      ->realpath($test_file->getFileUri());
    $this->drupalPostForm("node/add/{$this->contentType}", $edit, $this->t('Save and publish'));

    // Ensure that file path/name have been processed correctly by Pathauto.
    /** @var \Drupal\node\Entity\Node $node */
    $node = Node::load(1);

    $parts = explode('/', $node->getTitle());
    foreach ($parts as &$part) {
      $part = \Drupal::service('pathauto.alias_cleaner')->cleanString($part);
    }
    $title = implode('/', $parts);

    $this->assertEqual($node->{$field_name}[0]->entity->getFileUri(), "public://node/{$title}/{$title}.txt", $this->t('File path/name has been processed correctly by Pathauto'));
  }

  /**
   * Test Transliteration cleanup in File (Field) Paths.
   */
  public function testTransliteration() {
    // Create a File field.
    $field_name = Unicode::strtolower($this->randomMachineName());

    $third_party_settings['filefield_paths']['file_path']['value'] = 'node/[node:title]';
    $third_party_settings['filefield_paths']['file_path']['options']['transliterate'] = TRUE;
    $third_party_settings['filefield_paths']['file_name']['value'] = '[node:title].[file:ffp-extension-original]';
    $third_party_settings['filefield_paths']['file_name']['options']['transliterate'] = TRUE;

    $this->createFileField($field_name, 'node', $this->contentType, [], [], $third_party_settings);

    // Create a node with a test file.
    /** @var \Drupal\file\Entity\File $test_file */
    $test_file = $this->getTestFile('text');
    $edit['title[0][value]'] = 'тест';

    $edit['files[' . $field_name . '_0]'] = \Drupal::service('file_system')
      ->realpath($test_file->getFileUri());
    $this->drupalPostForm("node/add/{$this->contentType}", $edit, $this->t('Save and publish'));

    // Get created Node ID.
    $matches = [];
    preg_match('/node\/([0-9]+)/', $this->getUrl(), $matches);
    $nid = $matches[1];

    // Ensure that file path/name have been processed correctly by
    // Transliteration.
    $node = Node::load($nid);
    $this->assertEqual($node->{$field_name}[0]->entity->getFileUri(), "public://node/test/test.txt", $this->t('File path/name has been processed correctly by Transliteration'));
  }

 /**
  * Provides propose forms for various RDF entities.
  *
  * This is used for the propose form of collections and solutions.
  *
  * @param \Drupal\rdf_entity\RdfEntityTypeInterface $rdf_type
  *   The RDF bundle entity for which to generate the propose form.
  *
  * @return array
  *   A render array for the propose form.
  *
  * @throws \Exception
  *   Thrown when an attempt is made to propose an rdf_entity that is not a
  *   solution or a collection.
  */
 public function proposeRdfEntity(RdfEntityTypeInterface $rdf_type)
 {
     $rdf_entity = $this->entityTypeManager()->getStorage('rdf_entity')->create(array('rid' => $rdf_type->id()));
     $form = $this->entityFormBuilder()->getForm($rdf_entity, 'propose');
     $form['#title'] = $this->t('Propose @type', ['@type' => Unicode::strtolower($rdf_type->label())]);
     return $form;
 }

 /**
  * {@inheritdoc}
  */
 public function preprocessIndexValue($value, $type = 'text')
 {
     if ($type == 'text') {
         return $value;
     }
     return Unicode::strtolower($this->transliterator->transliterate($value));
 }

 /**
  * Test ID validation and the proper video display of a valid ID.
  */
 public function testVideo()
 {
     $field_name = Unicode::strtolower($this->randomMachineName());
     // Create a field.
     $field_storage = entity_create('field_storage_config', array('field_name' => $field_name, 'entity_type' => 'node', 'translatable' => FALSE, 'type' => 'youtube', 'cardinality' => '1'));
     $field_storage->save();
     $field = entity_create('field_config', array('field_storage' => $field_storage, 'bundle' => 'article', 'title' => DRUPAL_DISABLED));
     $field->save();
     entity_get_form_display('node', 'article', 'default')->setComponent($field_name, array('type' => 'youtube', 'settings' => array()))->save();
     entity_get_display('node', 'article', 'full')->setComponent($field_name, array('type' => 'youtube_video'))->save();
     // Display creation form.
     $this->drupalGet('node/add/article');
     $this->assertFieldByName("{$field_name}[0][input]", '', t('Video input field is displayed'));
     // Verify that a valid URL can be submitted.
     $video_id = 'T5y3dJYHb_A';
     $value = 'http://www.youtube.com/watch?v=' . $video_id;
     $embed_value = 'http://www.youtube.com/embed/' . $video_id;
     $edit = array("title[0][value]" => 'Test', "{$field_name}[0][input]" => $value);
     $this->drupalPostForm(NULL, $edit, t('Save and publish'));
     preg_match('|/node/(\\d+)|', $this->url, $match);
     $this->assertText(t('Article Test has been created.'));
     $this->assertRaw($embed_value);
     // Verify that the video is displayed.
     $pattern = '<iframe.*src="' . $embed_value;
     $pattern = str_replace('/', '\\/', $pattern);
     $pattern = '/' . $pattern . '/s';
     $this->assertPattern($pattern);
     // Verify that invalid URLs cannot be submitted.
     $this->drupalGet('node/add/article');
     $value = 'not-a-url';
     $edit = array("title[0][value]" => 'Test1', "{$field_name}[0][input]" => $value);
     $this->drupalPostForm(NULL, $edit, t('Save and publish'));
     $this->assertText(t('Please provide a valid YouTube URL.'));
 }

 /**
  * {@inheritdoc}
  */
 protected function process(&$value)
 {
     // We don't touch integers, NULL values or the like.
     if (is_string($value)) {
         $value = Unicode::strtolower($value);
     }
 }

 /**
  * {@inheritdoc}
  */
 public function validate($items, Constraint $constraint)
 {
     $bundles = $constraint->bundles;
     if (!($item = $items->first())) {
         return;
     }
     $field_name = $items->getFieldDefinition()->getName();
     /** @var \Drupal\Core\Entity\EntityInterface $entity */
     $entity = $items->getEntity();
     $bundle = $entity->bundle();
     if (!in_array($bundle, $bundles)) {
         // The constraint does not apply to this bundle.
         return;
     }
     $bundle_key = $entity->getEntityType()->getKey('bundle');
     $entity_type_id = $entity->getEntityTypeId();
     $id_key = $entity->getEntityType()->getKey('id');
     $query = \Drupal::entityQuery($entity_type_id)->condition($field_name, $item->value)->condition($bundle_key, $bundles, 'IN');
     if (!empty($entity->id())) {
         $query->condition($id_key, $items->getEntity()->id(), '<>');
     }
     $value_taken = (bool) $query->range(0, 1)->count()->execute();
     if ($value_taken) {
         $this->context->addViolation($constraint->message, ['%value' => $item->value, '@entity_type' => $entity->getEntityType()->getLowercaseLabel(), '@field_name' => Unicode::strtolower($items->getFieldDefinition()->getLabel())]);
     }
 }

 protected function setUp()
 {
     parent::setUp();
     $this->installEntitySchema('taxonomy_term');
     // We want a taxonomy term reference field. It needs a vocabulary, terms,
     // a field storage and a field. First, create the vocabulary.
     $vocabulary = entity_create('taxonomy_vocabulary', array('vid' => Unicode::strtolower($this->randomMachineName())));
     $vocabulary->save();
     // Second, create the field.
     $this->fieldName = strtolower($this->randomMachineName());
     entity_create('field_storage_config', array('field_name' => $this->fieldName, 'entity_type' => 'entity_test', 'type' => 'taxonomy_term_reference', 'settings' => array('allowed_values' => array(array('vocabulary' => $vocabulary->id())))))->save();
     entity_test_create_bundle('test_bundle');
     // Third, create the instance.
     entity_create('field_config', array('entity_type' => 'entity_test', 'field_name' => $this->fieldName, 'bundle' => 'test_bundle'))->save();
     // Create two terms and also two accounts.
     for ($i = 0; $i <= 1; $i++) {
         $term = entity_create('taxonomy_term', array('name' => $this->randomMachineName(), 'vid' => $vocabulary->id()));
         $term->save();
         $this->terms[] = $term;
         $this->accounts[] = $this->createUser();
     }
     // Create three entity_test entities, the 0th entity will point to the
     // 0th account and 0th term, the 1st and 2nd entity will point to the
     // 1st account and 1st term.
     for ($i = 0; $i <= 2; $i++) {
         $entity = entity_create('entity_test', array('type' => 'test_bundle'));
         $entity->name->value = $this->randomMachineName();
         $index = $i ? 1 : 0;
         $entity->user_id->target_id = $this->accounts[$index]->id();
         $entity->{$this->fieldName}->target_id = $this->terms[$index]->id();
         $entity->save();
         $this->entities[] = $entity;
     }
     $this->factory = \Drupal::service('entity.query');
 }