Regression: OAS2 response examples are not displayed

[hkosova]

Q&A (please complete the following information)

• OS: Windows 10
• Browser: any
• Method of installation: https://editor.swagger.io
• Swagger-UI version: 3.23.0
• Swagger/OpenAPI version: OpenAPI 2.0

Content & configuration

Example Swagger/OpenAPI definition:

swagger: "2.0"
info:
  title: test
  version: 1.0.0
paths:
  /foo1:
    get:
      summary: Response without a schema
      produces:
        - application/json
      responses:
        200:
          description: Successful response
          examples:
            application/json:
              foo: custom value
  /foo2:
    get:
      summary: Response with schema
      produces:
        - application/json
      responses:
        200:
          description: Successful response
          schema:
            $ref: '#/definitions/Foo'
          examples:
            application/json:
              foo: custom value

definitions:
  Foo:
    type: object
    properties:
      foo:
        type: string
        example: bar

Describe the bug you're encountering

/pull/5427 seems to have introduced an issue where OAS2 response examples are not displayed if the response does not have a schema defined. Previous versions of Swagger UI rendered the response examples in this case.

Expected behavior

Both /foo1 and /foo2 display the following response example, as it was in Swagger UI v. 3.22.3:

{
  "foo": "custom value"
}

Actual behavior

/foo1 does not display any example.
/foo2 displays schema-based example instead of the custom example from examples.

[shockey]

(P1 in order to push this above #5453 and #5455)

[shockey]

thanks as always @hkosova!

[shockey]

wait a second

My implementation missed the mark, it's generating custom value instead of the entire object.

Reopening.

[shockey]