====test====
Set expected format of request body parameter to base64.
Test if it fails when not base64.
====spec====
swagger: '2.0'
paths:
  /path:
    post:
      consumes:
        - application/x-www-form-urlencoded
      responses:
        200:
          schema:
            type: string
      parameters:
        - in: formData
          type: string
          format: byte
          name: id
====server====
mock -p 4010 ${document}
====command====
curl -i -X POST http://localhost:4010/path -H "Content-Type: application/x-www-form-urlencoded" --data-urlencode "id=%"
====expect====
HTTP/1.1 422 Unprocessable Entity

{"type":"https://stoplight.io/prism/errors#UNPROCESSABLE_ENTITY","title":"Invalid request","status":422,"detail":"Your request is not valid and no HTTP validation response was found in the spec, so Prism is generating this error for you.","validation":[{"location":["body","id"],"severity":"Error","code":"pattern","message":"Request body property id must match pattern \"^[\\w\\d+\\/=]*$\""},{"location":["body","id"],"severity":"Error","code":"format","message":"Request body property id must match format \"byte\""}]}