Ouzo\Validatable::validateEmpty PHP Method

    public function validateEmpty($value, $errorMessage, $errorField = null)
    {
        if (!empty($value)) {
            $this->error($errorMessage);
            $this->_errorFields[] = $errorField;
        }
    }

 /**
  * @test
  */
 public function emptyShouldNotReturnErrorForEmpty()
 {
     //given
     $object = '';
     $validatable = new Validatable();
     //when
     $validatable->validateEmpty($object, 'error1');
     //then
     $this->assertEmpty($validatable->getErrors());
 }