[2.1.0-beta.6 and oas-3.1.0] Request body property data type change is detected as compatible or no_change

[nagarro-aditya]

1. string to object (actual: compatible, expected: incompatible)
2. string to integer/integer to string (actual: no_change, expected: incompatible)

Case 1:
old.yml

openapi: 3.1.0
info:
  title: Demo API
  version: v1
paths:
  /endpoint:
    post:
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - requiredProp
                - requiredToRemoveProp
                - dataTypeChangedRequiredProp
                - requiredToOptionalProp
              properties:
                requiredProp:
                  type: string
                optionalProp:
                  type: string
                optionalToRemoveProp:
                  type: string
                requiredToRemoveProp:
                  type: string
                dataTypeChangedRequiredProp:
                  type: string
                dataTypeChangedOptionalProp:
                  type: string
                optionalToRequiredProp:
                  type: string
                requiredToOptionalProp:
                  type: string
      responses:
        default:
          description: successful operation
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                    format: int64
                    example: 201

new.yml

openapi: 3.1.0
info:
  title: Demo API
  version: v1
paths:
  /endpoint:
    post:
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - requiredProp
                - requiredToRemoveProp
                - dataTypeChangedRequiredProp
                - requiredToOptionalProp
              properties:
                requiredProp:
                  type: string
                optionalProp:
                  type: string
                optionalToRemoveProp:
                  type: string
                requiredToRemoveProp:
                  type: string
                dataTypeChangedRequiredProp:
                  type: object
                  properties:
                    id:
                      type: string
                dataTypeChangedOptionalProp:
                  type: string
                optionalToRequiredProp:
                  type: string
                requiredToOptionalProp:
                  type: string
      responses:
        default:
          description: successful operation
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                    format: int64
                    example: 201

Case 2:
old.yml

openapi: 3.1.0
info:
  title: Demo API
  version: v1
paths:
  /endpoint:
    post:
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - requiredProp
                - requiredToRemoveProp
                - dataTypeChangedRequiredProp
                - requiredToOptionalProp
              properties:
                requiredProp:
                  type: string
                optionalProp:
                  type: string
                optionalToRemoveProp:
                  type: string
                requiredToRemoveProp:
                  type: string
                dataTypeChangedRequiredProp:
                  type: integer
                dataTypeChangedOptionalProp:
                  type: string
                optionalToRequiredProp:
                  type: string
                requiredToOptionalProp:
                  type: string
      responses:
        default:
          description: successful operation
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                    format: int64
                    example: 201

new.yml

openapi: 3.1.0
info:
  title: Demo API
  version: v1
paths:
  /endpoint:
    post:
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - requiredProp
                - requiredToRemoveProp
                - dataTypeChangedRequiredProp
                - requiredToOptionalProp
              properties:
                requiredProp:
                  type: string
                optionalProp:
                  type: string
                optionalToRemoveProp:
                  type: string
                requiredToRemoveProp:
                  type: string
                dataTypeChangedRequiredProp:
                  type: string
                dataTypeChangedOptionalProp:
                  type: string
                optionalToRequiredProp:
                  type: string
                requiredToOptionalProp:
                  type: string
      responses:
        default:
          description: successful operation
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                    format: int64
                    example: 201

Examples are having data-type change only for required property but tested the same for optional property giving same output
Command used: docker run --rm -t -v $(pwd):/specs openapitools/openapi-diff:2.1.0-beta.6 /specs/old.yml /specs/new.yml --state

EDIT: The same changes are considered as incompatible with openapi: 3.0.3 and below

[rsittikun]

I also have same problem with openapi: 3.1.0

• if remove field in object type can detect change
• if remove field in array type can't detect change

both be able to detect change with openapi: 3.0.3