@redocly/openapi-core/__tests__/fixtures/resolve/openapi.yaml

See https://github.com/Redocly/openapi-cli

openapi: 3.0.0
paths:
  /pet:
    put:
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                local:
                  $ref: '#/components/schemas/Local'
                localTransitive:
                  $ref: '#/components/schemas/Local/properties/string'
                externalWithPointer:
                  $ref: ./External.yaml#/properties/string
                external:
                  $ref: ./External.yaml
components:
  schemas:
    Local:
      properties:
        number:
          type: number
        string:
          type: string
        localCircular:
          $ref: '#/components/schemas/Local'