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class FieldEncryptProcessEntitiesTest in Field Encryption 8.2

Unit Tests for the FieldEncryptProcessEntities service.

@group field_encrypt

@coversDefaultClass \Drupal\field_encrypt\FieldEncryptProcessEntities

Hierarchy

Expanded class hierarchy of FieldEncryptProcessEntitiesTest

File

tests/src/Unit/FieldEncryptProcessEntitiesTest.php, line 26
Contains \Drupal\Tests\field_encrypt\Unit\FieldEncryptProcessEntitiesTest.

Namespace

Drupal\Tests\field_encrypt\Unit
View source 
class FieldEncryptProcessEntitiesTest extends UnitTestCase {

  /**
   * A mock entity.
   *
   * @var \Drupal\Core\Entity\ContentEntityInterface
   */
  protected $entity;

  /**
   * A mock field.
   *
   * @var \Drupal\Core\Field\FieldItemListInterface
   */
  protected $field;

  /**
   * A mock entity manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityManager;

  /**
   * A mock encryption service.
   *
   * @var \Drupal\encrypt\EncryptServiceInterface
   */
  protected $encryptService;

  /**
   * A mock encryption profile manager.
   *
   * @var \Drupal\encrypt\EncryptionProfileManagerInterface
   */
  protected $encryptionProfileManager;

  /**
   * A mock EncryptionProfile.
   *
   * @var \Drupal\encrypt\EncryptionProfileInterface
   */
  protected $encryptionProfile;

  /**
   * A mock EncryptedFieldValue entity manager.
   *
   * @var \Drupal\field_encrypt\EncryptedFieldValueManagerInterface
   */
  protected $encryptedFieldValueManager;

  /**
   * {@inheritdoc}
   */
  public function setUp() {
    parent::setUp();

    // Set up a mock entity.
    $this->entity = $this
      ->getMockBuilder('\\Drupal\\Core\\Entity\\ContentEntityInterface')
      ->disableOriginalConstructor()
      ->getMock();

    // Set up language object.
    $language = $this
      ->getMockBuilder('\\Drupal\\Core\\Language\\LanguageInterface')
      ->disableOriginalConstructor()
      ->getMock();

    // Set up expectations for language.
    $language
      ->expects($this
      ->any())
      ->method('getId')
      ->will($this
      ->returnValue('en'));

    // Set up expectations for entity.
    $this->entity
      ->expects($this
      ->any())
      ->method('getTranslationLanguages')
      ->will($this
      ->returnValue([
      $language,
    ]));
    $this->entity
      ->expects($this
      ->any())
      ->method('getTranslation')
      ->will($this
      ->returnSelf());

    // Set up a mock field.
    $this->field = $this
      ->getMockBuilder('\\Drupal\\Core\\Field\\FieldItemListInterface')
      ->disableOriginalConstructor()
      ->getMock();

    // Set up a mock EntityTypeManager.
    $this->entityManager = $this
      ->getMockBuilder('\\Drupal\\Core\\Entity\\EntityTypeManagerInterface')
      ->disableOriginalConstructor()
      ->getMock();

    // Set up a mock EncryptService.
    $this->encryptService = $this
      ->getMockBuilder('\\Drupal\\encrypt\\EncryptServiceInterface')
      ->disableOriginalConstructor()
      ->getMock();

    // Set up expectations for EncryptService.
    $this->encryptService
      ->expects($this
      ->any())
      ->method('encrypt')
      ->will($this
      ->returnValue('encrypted text'));
    $this->encryptService
      ->expects($this
      ->any())
      ->method('decrypt')
      ->will($this
      ->returnValue('decrypted text'));

    // Set up a mock EncryptionProfileManager.
    $this->encryptionProfileManager = $this
      ->getMockBuilder('\\Drupal\\encrypt\\EncryptionProfileManagerInterface')
      ->disableOriginalConstructor()
      ->getMock();
    $this->encryptionProfile = $this
      ->getMockBuilder(EncryptionProfileInterface::class)
      ->disableOriginalConstructor()
      ->getMock();

    // Set up expectations for EncryptionProfileManager.
    $this->encryptionProfileManager
      ->expects($this
      ->any())
      ->method('getEncryptionProfile')
      ->will($this
      ->returnValue($this->encryptionProfile));

    // Set up a mock EncryptedFieldValueManager.
    $this->encryptedFieldValueManager = $this
      ->getMockBuilder('\\Drupal\\field_encrypt\\EncryptedFieldValueManagerInterface')
      ->disableOriginalConstructor()
      ->getMock();
    $container = new ContainerBuilder();
    $module_handler = $this
      ->createMock(ModuleHandlerInterface::class);
    $module_handler
      ->expects($this
      ->any())
      ->method('alter');
    $container
      ->set('module_handler', $module_handler);
    \Drupal::setContainer($container);
  }

  /**
   * Test method entityHasEncryptedFields().
   *
   * @covers ::__construct
   * @covers ::entityHasEncryptedFields
   * @covers ::checkField
   *
   * @dataProvider entityHasEncryptedFieldsDataProvider
   */
  public function testEntityHasEncryptedFields($encrypted, $expected) {
    $definition = $this
      ->getMockBuilder('\\Drupal\\Core\\Field\\BaseFieldDefinition')
      ->setMethods([
      'get',
    ])
      ->disableOriginalConstructor()
      ->getMock();
    $storage = $this
      ->getMockBuilder('\\Drupal\\Core\\Field\\FieldConfigStorageBase')
      ->setMethods([
      'getThirdPartySetting',
    ])
      ->disableOriginalConstructor()
      ->getMock();

    // Set up expectations for storage.
    $storage
      ->expects($this
      ->once())
      ->method('getThirdPartySetting')
      ->will($this
      ->returnValue($encrypted));

    // Set up expectations for definition.
    $definition
      ->expects($this
      ->once())
      ->method('get')
      ->will($this
      ->returnValue($storage));

    // Set up expectations for field.
    $this->field
      ->expects($this
      ->once())
      ->method('getFieldDefinition')
      ->will($this
      ->returnValue($definition));

    // Set up expectations for entity.
    $this->entity
      ->expects($this
      ->once())
      ->method('getFields')
      ->will($this
      ->returnValue([
      $this->field,
    ]));
    $service = new FieldEncryptProcessEntities($this->entityManager, $this->encryptService, $this->encryptionProfileManager, $this->encryptedFieldValueManager);
    $return = $service
      ->entityHasEncryptedFields($this->entity);
    $this
      ->assertEquals($expected, $return);
  }

  /**
   * Data provider for testEntityHasEncryptedFields method.
   *
   * @return array
   *   An array with data for the test method.
   */
  public function entityHasEncryptedFieldsDataProvider() {
    return [
      'encrypted_fields' => [
        TRUE,
        TRUE,
      ],
      'no_encrypted_fields' => [
        FALSE,
        FALSE,
      ],
    ];
  }

  /**
   * Tests the encryptEntity / decryptEntity methods.
   *
   * @covers ::__construct
   * @covers ::encryptEntity
   * @covers ::decryptEntity
   * @covers ::processEntity
   * @covers ::processField
   * @covers ::processValue
   * @covers ::getUnencryptedPlaceholderValue
   *
   * @dataProvider encyptDecryptEntityDataProvider
   */
  public function testEncyptDecryptEntity($field_type, $property_definitions, $properties, $field_value, $expected_placeholder, $encrypted) {

    // Set up field definition.
    $definition = $this
      ->getMockBuilder('\\Drupal\\Core\\Field\\BaseFieldDefinition')
      ->setMethods([
      'get',
      'getType',
    ])
      ->disableOriginalConstructor()
      ->getMock();

    // Set up field storage.
    $storage = $this
      ->getMockBuilder('\\Drupal\\Core\\Field\\FieldConfigStorageBase')
      ->setMethods([
      'getThirdPartySetting',
      'getPropertyDefinitions',
    ])
      ->disableOriginalConstructor()
      ->getMock();

    // Set up expectations for storage.
    $storage_map = [
      [
        'field_encrypt',
        'encrypt',
        FALSE,
        $encrypted,
      ],
      [
        'field_encrypt',
        'encryption_profile',
        [],
        'test_encryption_profile',
      ],
      [
        'field_encrypt',
        'properties',
        [],
        $properties,
      ],
    ];
    $storage
      ->expects($this
      ->any())
      ->method('getThirdPartySetting')
      ->will($this
      ->returnValueMap($storage_map));
    $storage
      ->expects($this
      ->any())
      ->method('getPropertyDefinitions')
      ->will($this
      ->returnValue($property_definitions));

    // Set up expectations for definition.
    $definition
      ->expects($this
      ->any())
      ->method('get')
      ->willReturnMap([
      [
        'field_name',
        'test_field',
      ],
      [
        'fieldStorage',
        $storage,
      ],
    ]);
    $definition
      ->expects($this
      ->any())
      ->method('getType')
      ->will($this
      ->returnValue($field_type));

    // Set up expectations for field.
    $this->field
      ->expects($this
      ->any())
      ->method('getFieldDefinition')
      ->will($this
      ->returnValue($definition));
    if ($encrypted) {
      $this->field
        ->expects($this
        ->once())
        ->method('getValue')
        ->will($this
        ->returnValue($field_value));
      $this->field
        ->expects($this
        ->once())
        ->method('setValue')
        ->with($expected_placeholder);
    }
    else {
      $this->field
        ->expects($this
        ->never())
        ->method('getValue');
      $this->field
        ->expects($this
        ->never())
        ->method('setValue');
    }

    // Set expectations for entity.
    $this->entity
      ->expects($this
      ->once())
      ->method('getFields')
      ->will($this
      ->returnValue([
      $this->field,
    ]));

    // Set up a mock for the EncryptionProfile class to mock some methods.
    $service = $this
      ->getMockBuilder('\\Drupal\\field_encrypt\\FieldEncryptProcessEntities')
      ->setMethods([
      'checkField',
      'allowEncryption',
    ])
      ->setConstructorArgs(array(
      $this->entityManager,
      $this->encryptService,
      $this->encryptionProfileManager,
      $this->encryptedFieldValueManager,
    ))
      ->getMock();

    // Mock some methods on FieldEncryptProcessEntities, since they are out of
    // scope of this specific unit test.
    $service
      ->expects($this
      ->once())
      ->method('checkField')
      ->will($this
      ->returnValue(TRUE));
    $service
      ->expects($this
      ->any())
      ->method('allowEncryption')
      ->will($this
      ->returnValue(TRUE));
    $service
      ->encryptEntity($this->entity);
  }

  /**
   * Data provider for testEncyptDecryptEntity method.
   *
   * @return array
   *   An array with data for the test method.
   */
  public function encyptDecryptEntityDataProvider() {
    return [
      'encrypted_string' => [
        'string',
        [
          'value' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
            'settings' => [
              'case_sensitive' => FALSE,
            ],
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => 'unencrypted text',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_string_long' => [
        'string_long',
        [
          'value' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
            'settings' => [
              'case_sensitive' => FALSE,
            ],
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => 'unencrypted text',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_text' => [
        'text',
        [
          'value' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
          ]),
          'format' => new DataDefinition([
            'type' => 'filter_format',
          ]),
          'processed' => new DataDefinition([
            'type' => 'string',
            'computed' => TRUE,
            'class' => '\\Drupal\\text\\TextProcessed',
            'settings' => [
              'text source' => 'value',
            ],
          ]),
        ],
        [
          'value' => 'value',
          'format' => 'format',
        ],
        [
          [
            'value' => '<p>unencrypted text</p>',
            'format' => 'basic_html',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
            'format' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_text_long' => [
        'text_long',
        [
          'value' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
          ]),
          'format' => new DataDefinition([
            'type' => 'filter_format',
          ]),
          'processed' => new DataDefinition([
            'type' => 'string',
            'computed' => TRUE,
            'class' => '\\Drupal\\text\\TextProcessed',
            'settings' => [
              'text source' => 'value',
            ],
          ]),
        ],
        [
          'value' => 'value',
          'format' => 'format',
        ],
        [
          [
            'value' => '<p>unencrypted text</p>',
            'format' => 'basic_html',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
            'format' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_text_with_summary' => [
        'text_with_summary',
        [
          'value' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
          ]),
          'format' => new DataDefinition([
            'type' => 'filter_format',
          ]),
          'processed' => new DataDefinition([
            'type' => 'string',
            'computed' => TRUE,
            'class' => '\\Drupal\\text\\TextProcessed',
            'settings' => [
              'text source' => 'value',
            ],
          ]),
          'summary' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
          ]),
          'summary_processed' => new DataDefinition([
            'type' => 'string',
            'computed' => TRUE,
            'class' => '\\Drupal\\text\\TextProcessed',
            'settings' => [
              'text source' => 'summarys',
            ],
          ]),
        ],
        [
          'value' => 'value',
          'summary' => 'summary',
          'format' => 'format',
        ],
        [
          [
            'value' => '<p>unencrypted text</p>',
            'summary' => 'summary',
            'format' => 'basic_html',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
            'summary' => '[ENCRYPTED]',
            'format' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_list_string' => [
        'list_string',
        [
          'value' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
            'constraints' => [
              'Length' => [
                'max' => 255,
              ],
            ],
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => 'value1',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_email' => [
        'email',
        [
          'value' => new DataDefinition([
            'type' => 'email',
            'required' => TRUE,
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => 'test@example.com',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_date' => [
        'datetime',
        [
          'value' => new DataDefinition([
            'type' => 'datetime_iso8601',
            'required' => TRUE,
          ]),
          'date' => new DataDefinition([
            'type' => 'any',
            'computed' => TRUE,
            'class' => '\\Drupal\\datetime\\DateTimeComputed',
            'settings' => [
              'date source' => 'value',
            ],
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => '1984-10-04T00:00:00',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_link' => [
        'link',
        [
          'uri' => new DataDefinition([
            'type' => 'uri',
          ]),
          'title' => new DataDefinition([
            'type' => 'string',
          ]),
          'options' => new DataDefinition([
            'type' => 'map',
          ]),
        ],
        [
          'uri' => 'uri',
          'title' => 'title',
        ],
        [
          [
            'title' => 'Drupal.org',
            'attributes' => [],
            'options' => [],
            'uri' => 'https://drupal.org',
          ],
        ],
        [
          [
            'title' => '[ENCRYPTED]',
            'uri' => '[ENCRYPTED]',
            'options' => [],
            'attributes' => [],
          ],
        ],
        TRUE,
      ],
      'encrypted_int' => [
        'integer',
        [
          'value' => new DataDefinition([
            'type' => 'integer',
            'required' => TRUE,
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => '42',
          ],
        ],
        [
          [
            'value' => 0,
          ],
        ],
        TRUE,
      ],
      'encrypted_float' => [
        'float',
        [
          'value' => new DataDefinition([
            'type' => 'float',
            'required' => TRUE,
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => '3.14',
          ],
        ],
        [
          [
            'value' => 0,
          ],
        ],
        TRUE,
      ],
      'encrypted_decimal' => [
        'decimal',
        [
          'value' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => '3.14',
          ],
        ],
        [
          [
            'value' => 0,
          ],
        ],
        TRUE,
      ],
      'encrypted_boolean' => [
        'boolean',
        [
          'value' => new DataDefinition([
            'type' => 'boolean',
            'required' => TRUE,
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => 1,
          ],
        ],
        [
          [
            'value' => 0,
          ],
        ],
        TRUE,
      ],
      'encrypted_telephone' => [
        'telephone',
        [
          'value' => new DataDefinition([
            'type' => 'string',
            'required' => TRUE,
          ]),
        ],
        [
          'value' => 'value',
        ],
        [
          [
            'value' => '+1-202-555-0161',
          ],
        ],
        [
          [
            'value' => '[ENCRYPTED]',
          ],
        ],
        TRUE,
      ],
      'encrypted_entity_reference' => [
        'entity_reference',
        [
          'target_id' => new DataDefinition([
            'type' => 'integer',
            'settings' => [
              'unsigned' => TRUE,
            ],
            'required' => TRUE,
          ]),
          'entity' => new DataDefinition([
            'type' => 'entity_reference',
            'computed' => TRUE,
            'read-only' => FALSE,
            'constraints' => [
              'EntityType' => 'user',
            ],
          ]),
        ],
        [
          'target_id' => 'target_id',
        ],
        [
          [
            'target_id' => 1,
          ],
        ],
        [
          [
            'target_id' => 0,
          ],
        ],
        TRUE,
      ],
      'not_encrypted' => [
        'text',
        [],
        [],
        'unencrypted text',
        NULL,
        FALSE,
      ],
    ];
  }

  /**
   * Tests the updateStoredField method.
   *
   * @covers ::__construct
   * @covers ::updateStoredField
   *
   * @dataProvider updateStoredFieldDataProvider
   */
  public function testUpdateStoredField($field_name, $field_entity_type, $original_encryption_settings, $entity_id) {

    // Set up entity storage mock.
    $entity_storage = $this
      ->getMockBuilder('\\Drupal\\Core\\Entity\\EntityStorageInterface')
      ->disableOriginalConstructor()
      ->getMock();

    // Set up a mock entity type.
    $entity_type = $this
      ->getMockBuilder('\\Drupal\\Core\\Entity\\EntityTypeInterface')
      ->disableOriginalConstructor()
      ->getMock();

    // Set up expectations for entity type.
    $entity_type
      ->expects($this
      ->once())
      ->method('hasKey')
      ->will($this
      ->returnValue(TRUE));

    // Set up expectations for entity storage.
    $entity_storage
      ->expects($this
      ->any())
      ->method('loadRevision')
      ->will($this
      ->returnValue($this->entity));
    $entity_storage
      ->expects($this
      ->never())
      ->method('load');

    // Set up expectations for entity manager.
    $this->entityManager
      ->expects($this
      ->once())
      ->method('getStorage')
      ->will($this
      ->returnValue($entity_storage));
    $this->entityManager
      ->expects($this
      ->once())
      ->method('getDefinition')
      ->will($this
      ->returnValue($entity_type));

    // Set up expectations for entity.
    $this->entity
      ->expects($this
      ->once())
      ->method('get')
      ->with($field_name)
      ->will($this
      ->returnValue($this->field));
    $this->entity
      ->expects($this
      ->once())
      ->method('save');

    // Set up a mock for the EncryptionProfile class to mock some methods.
    $service = $this
      ->getMockBuilder('\\Drupal\\field_encrypt\\FieldEncryptProcessEntities')
      ->setMethods([
      'checkField',
      'processField',
      'allowEncryption',
    ])
      ->setConstructorArgs(array(
      $this->entityManager,
      $this->encryptService,
      $this->encryptionProfileManager,
      $this->encryptedFieldValueManager,
    ))
      ->getMock();
    if (!empty($original_encryption_settings)) {
      $service
        ->expects($this
        ->once())
        ->method('processField');
    }
    else {
      $service
        ->expects($this
        ->never())
        ->method('processField');
    }
    $service
      ->expects($this
      ->any())
      ->method('checkField')
      ->will($this
      ->returnValue(TRUE));
    $service
      ->expects($this
      ->any())
      ->method('allowEncryption')
      ->will($this
      ->returnValue(TRUE));
    $service
      ->updateStoredField($field_name, $field_entity_type, $original_encryption_settings, $entity_id);
  }

  /**
   * Data provider for testUpdateStoredField method.
   *
   * @return array
   *   An array with data for the test method.
   */
  public function updateStoredFieldDataProvider() {
    return [
      'no_decrypt' => [
        'field_test',
        'node',
        [],
        1,
      ],
      'decrypt' => [
        'field_test',
        'node',
        [
          'field_encrypt' => TRUE,
          'properties' => [
            'value',
          ],
          'encryption_profile' => 'test_encryption_profile',
        ],
        1,
      ],
    ];
  }

}

Members

Namesort descending Modifiers Type Description Overrides
FieldEncryptProcessEntitiesTest::$encryptedFieldValueManager protected property A mock EncryptedFieldValue entity manager.
FieldEncryptProcessEntitiesTest::$encryptionProfile protected property A mock EncryptionProfile.
FieldEncryptProcessEntitiesTest::$encryptionProfileManager protected property A mock encryption profile manager.
FieldEncryptProcessEntitiesTest::$encryptService protected property A mock encryption service.
FieldEncryptProcessEntitiesTest::$entity protected property A mock entity.
FieldEncryptProcessEntitiesTest::$entityManager protected property A mock entity manager.
FieldEncryptProcessEntitiesTest::$field protected property A mock field.
FieldEncryptProcessEntitiesTest::encyptDecryptEntityDataProvider public function Data provider for testEncyptDecryptEntity method.
FieldEncryptProcessEntitiesTest::entityHasEncryptedFieldsDataProvider public function Data provider for testEntityHasEncryptedFields method.
FieldEncryptProcessEntitiesTest::setUp public function Overrides UnitTestCase::setUp
FieldEncryptProcessEntitiesTest::testEncyptDecryptEntity public function Tests the encryptEntity / decryptEntity methods.
FieldEncryptProcessEntitiesTest::testEntityHasEncryptedFields public function Test method entityHasEncryptedFields().
FieldEncryptProcessEntitiesTest::testUpdateStoredField public function Tests the updateStoredField method.
FieldEncryptProcessEntitiesTest::updateStoredFieldDataProvider public function Data provider for testUpdateStoredField method.
PhpunitCompatibilityTrait::getMock Deprecated public function Returns a mock object for the specified class using the available method.
PhpunitCompatibilityTrait::setExpectedException Deprecated public function Compatibility layer for PHPUnit 6 to support PHPUnit 4 code.
UnitTestCase::$randomGenerator protected property The random generator.
UnitTestCase::$root protected property The app root. 1
UnitTestCase::assertArrayEquals protected function Asserts if two arrays are equal by sorting them first.
UnitTestCase::getBlockMockWithMachineName Deprecated protected function Mocks a block with a block plugin. 1
UnitTestCase::getClassResolverStub protected function Returns a stub class resolver.
UnitTestCase::getConfigFactoryStub public function Returns a stub config factory that behaves according to the passed array.
UnitTestCase::getConfigStorageStub public function Returns a stub config storage that returns the supplied configuration.
UnitTestCase::getContainerWithCacheTagsInvalidator protected function Sets up a container with a cache tags invalidator.
UnitTestCase::getRandomGenerator protected function Gets the random generator for the utility methods.
UnitTestCase::getStringTranslationStub public function Returns a stub translation manager that just returns the passed string.
UnitTestCase::randomMachineName public function Generates a unique random string containing letters and numbers.