Spectral Spotlight Issue: Inconsistent allOf Validation in Parameters vs Responses

[Krzysztof-Kolodziejczyk]

Spectral Spotlight Issue: Inconsistent allOf Validation in Parameters vs Responses
Version: 6.11.1
Node.js Version: 20.17.0

There is an inconsistency in how Spectral validates allOf elements within parameters versus responses in an OpenAPI document. When using allOf in parameters, all elements are validated correctly. However, in the responses section, if one of the allOf elements contains a $ref to a definition that has already been validated, Spectral does not validate any remaining elements within the allOf structure.

== To Reproduce

1. Given this OpenAPI document:

   paths:
     /somepath:
       post:
         parameters:
           - in: body
             schema:
               allOf:
                 - $ref: '#/definitions/SomeElement'
                   example: {}
                 - properties:
                     name:
                       description: User's name.
                       type: string
                       example: John
                     id:
                       description: User's identifier.
                       example: 1
         responses:
           '200':
             description: 'Successful response.'
             schema:
               allOf:
                 - $ref: '#/definitions/SomeElement'
                   example: {}
                 - properties:
                     name:
                       description: User's name.
                       type: string
                       example: John
                     id:
                       description: User's identifier.
                       example: 1
   

2. Observe the behavior:

   • In the parameters section, Spectral correctly validates all elements under the allOf.

   • In the responses section, if an allOf element contains a $ref to a definition that was previously validated (e.g., - $ref: '#/definitions/SomeRequest'), Spectral skips validation for the remaining elements within the allOf structure.

== Expected behavior

Spectral should validate all elements in the allOf structure within both parameters and responses, regardless of whether an element is a $ref to a previously validated definition. Consistent behavior is expected across all sections of the OpenApi document