Wrong attribute rendering, in an example of a XML response

[eduardoj]

Q&A

• OS: openSUSE Tumbleweed, VERSION="20201111"
• Browser: Google Chrome
• Version: 86.0.4240.198
• Method of installation: dist assets
• Swagger-UI version: 3.36.2
• Swagger/OpenAPI version: Swagger 2.0, OpenAPI 3.0.0

Tested also with Firefox 82.0.3, and Chromium 86.0.4240.183.

Content & configuration

Example Swagger/OpenAPI definition:

openapi: 3.0.0
info:
  description: Wrong attribute rendering in an example of a XML response
  version: "1.0.0"
  title: XML Test
paths:
  /about:
    get:
      summary: About
      description: Retrieves generic information
      responses:
        '200':
          description: Generic information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/api_response'
              example:                                   
                code: ok_json
                summary: Ok JSON
            application/xml; charset=utf-8:
              schema:
                $ref: '#/components/schemas/api_response'
              example:                                   
                code: ok_xml
                summary: Ok XML
components:
  schemas:
    api_response:
      description: OK. The request has succeeded.
      properties:
        code:
          type: string
          xml:
            attribute: true
        summary:
          type: string
      xml:
        name: status
      example:
        code: ok_default
        summary: Ok default

Describe the bug you're encountering

Switching the "Media type" to "application/xml; charset=utf8" results in this xml:

<?xml version="1.0" encoding="UTF-8"?>
<status code="ok_default">
	<summary>Ok xml</summary>
</status>

The code attribute should have the value ok_xml.

To reproduce...

Steps to reproduce the behavior:

1. Go to your Swagger-UI local instance.
2. Load the provided example yaml file.
3. Click in the "GET /about" endpoint section.
4. Chose the "application/xml; charset=utf8" option from the select box "Media type".
5. See wrong xml response, with a wrong value in the code attribute.

Expected behavior

The code attribute should have the value ok_xml.

<?xml version="1.0" encoding="UTF-8"?>
<status code="ok_xml">
	<summary>Ok xml</summary>
</status>

Additional context or thoughts

This does not happen in SwaggerHub. Only in my local Swagger-UI instance, created from the dist assets.

Link to a working example, in SwaggerHub: https://app.swaggerhub.com/apis/eduardoj/xmlExampleWrongAttribute/1.0.0