/**
  * Create AttributeMetadata Data object from the Attribute Model
  *
  * @param \Magento\Customer\Model\Attribute $attribute
  * @return AttributeMetadata
  */
 public function createMetadataAttribute($attribute)
 {
     $options = [];
     if ($attribute->usesSource()) {
         foreach ($attribute->getSource()->getAllOptions() as $option) {
             $options[] = $this->_optionBuilder->setLabel($option['label'])->setValue($option['value'])->create();
         }
     }
     $validationRules = [];
     foreach ($attribute->getValidateRules() as $name => $value) {
         $validationRules[] = $this->_validationRuleBuilder->setName($name)->setValue($value)->create();
     }
     $this->_attributeMetadataBuilder->setAttributeCode($attribute->getAttributeCode())->setFrontendInput($attribute->getFrontendInput())->setInputFilter((string) $attribute->getInputFilter())->setStoreLabel($attribute->getStoreLabel())->setValidationRules($validationRules)->setVisible((bool) $attribute->getIsVisible())->setRequired((bool) $attribute->getIsRequired())->setMultilineCount((int) $attribute->getMultilineCount())->setDataModel((string) $attribute->getDataModel())->setOptions($options)->setFrontendClass($attribute->getFrontend()->getClass())->setFrontendLabel($attribute->getFrontendLabel())->setNote((string) $attribute->getNote())->setIsSystem((bool) $attribute->getIsSystem())->setIsUserDefined((bool) $attribute->getIsUserDefined())->setBackendType($attribute->getBackendType())->setSortOrder((int) $attribute->getSortOrder());
     return $this->_attributeMetadataBuilder->create();
 }
 public function testCreate()
 {
     $attributeMetadata = $this->_builder->create();
     $this->assertInstanceOf('\\Magento\\Customer\\Service\\V1\\Data\\Eav\\AttributeMetadata', $attributeMetadata);
     $this->assertEquals(array(), $attributeMetadata->getOptions());
 }