issue resolving $ref: AttributeError: 'list' object has no attribute 'items'

in my opinion swagger-parser is not handling $ref correctly (see trace at the bottom). I tried with both python2.7 and python3.6. This relates to validate_request - definitions_example works fine.

relevant part of my spec:

definitions:
  NotificationARNs:
    type: array
    items:
      type: string
      example: arn:aws:sns:eu-west-1:123456789012:mytopic1
  stack:
    type: object
    properties:
      StackName:
        type: string
        example: infra-dev-kumo-sample-stack
      RoleARN:
        type: string
        example: arn:aws:iam::<AccountID>:role/<CloudFormationRoleName>
      NotificationARNs:
        $ref: '#/definitions/NotificationARNs'

if I resolve the $ref manually it works fine:

definitions:
  #NotificationARNs:
  #  type: array
  #  items:
  #    type: string
  #    example: arn:aws:sns:eu-west-1:123456789012:mytopic1
  stack:
    type: object
    properties:
      StackName:
        type: string
        example: team-dev-my-application-stack
      RoleARN:
        type: string
        #$ref: '#/definitions/parameters'
        pattern: "arn:aws:([a-zA-Z0-9-])+:([a-z]{2}-[a-z]+-d{1})?:(d{12})?:(.*)"
        example: arn:aws:iam::<AccountID>:role/<CloudFormationRoleName>
      NotificationARNs:
        type: array
        items:
          type: string
          example: arn:aws:sns:eu-west-1:123456789012:mytopic1
        #$ref: '#/definitions/NotificationARNs'

Traceback (most recent call last):
  File "config_validate_kumo.py", line 37, in <module>
    parser.validate_request('/kumo', 'get', body=my_config)
  File "/Users/fin0007m/devel/gcdt/bvenv/lib/python2.7/site-packages/swagger_parser/swagger_parser.py", line 713, in validate_request
    is_ok, msg = self._validate_body_parameters(body, action_spec)
  File "/Users/fin0007m/devel/gcdt/bvenv/lib/python2.7/site-packages/swagger_parser/swagger_parser.py", line 793, in _validate_body_parameters
    if not self.validate_definition(definition_name, body):
  File "/Users/fin0007m/devel/gcdt/bvenv/lib/python2.7/site-packages/swagger_parser/swagger_parser.py", line 508, in validate_definition
    if not self._validate_type(properties_dict[key], value):
  File "/Users/fin0007m/devel/gcdt/bvenv/lib/python2.7/site-packages/swagger_parser/swagger_parser.py", line 526, in _validate_type
    return self.validate_definition(def_name, value)
  File "/Users/fin0007m/devel/gcdt/bvenv/lib/python2.7/site-packages/swagger_parser/swagger_parser.py", line 508, in validate_definition
    if not self._validate_type(properties_dict[key], value):
  File "/Users/fin0007m/devel/gcdt/bvenv/lib/python2.7/site-packages/swagger_parser/swagger_parser.py", line 526, in _validate_type
    return self.validate_definition(def_name, value)
  File "/Users/fin0007m/devel/gcdt/bvenv/lib/python2.7/site-packages/swagger_parser/swagger_parser.py", line 503, in validate_definition
    for key, value in dict_to_test.items():
AttributeError: 'list' object has no attribute 'items'

[cyprieng]

Thank you for reporting this issue ! I will try to fix this soon