Vaildation error for tuple since version 8.0.0

[ikokostya]

Versions

• swagger-parser: 8.0.0
• node.js v10.16.0

Description

swagger-parser in version 8.0.0 stops validate tuples in response schema.

Code example

# api.yaml
openapi: '3.0.1'
info:
  version: v1
  title: test
paths:
  /:
    get:
      responses:
        200:
          description: Success
          content:
            application/json:
              schema:
                type: array
                items:
                  - type: number
                  - type: number

// t.js
const SwaggerParser = require('swagger-parser');

SwaggerParser.validate('api.yml')
  .then((api) => console.log('done'))
  .catch((err) => console.error(err.message));

Actual behavior

Validation error:

$ node t.js 
Swagger schema validation failed. 
  Data does not match any schemas from 'oneOf' at #/paths///post/requestBody
    Data does not match any schemas from 'oneOf' at #/paths///post/requestBody/content/application/json/schema
      Data does not match any schemas from 'oneOf' at #/content/application/json/schema/items
        Expected type object but found type array at #/items
        Expected type object but found type array at #/items
      Missing required property: $ref at #/content/application/json/schema
    Missing required property: $ref at #/paths///post/requestBody
 
JSON_OBJECT_VALIDATION_FAILED

Expected behavior

No errors.

Additional information

There are no errors in previous version 7.x:

$ npm i swagger-parser@7
+ swagger-parser@7.0.1
removed 1 package, updated 1 package and audited 128 packages in 1.37s
found 0 vulnerabilities

$ node t.js
done

[ikokostya]

Looks like this behavior follows to current state of specification OAI/OpenAPI-Specification#1026

[JamesMessinger]

Looks like this behavior follows to current state of specification OAI/OpenAPI-Specification#1026

Correct. This isn't a bug in Swagger Parser. It's a design limitation of the OpenAPI and/or JSON Schema specifications.