Trouble using 'y' as a path parameter

[tschaub]

Problem statement

Using a path parameter named y causes spec validation to fail.

Swagger specification

swagger: '2.0'

info:
  version: 1.0.0
  title: Go Swagger Test

paths:

  /letters/{y}:
    parameters:
      - name: y
        type: integer
        format: uint64
        description: Column id.
        in: path
        required: true
    get:
      summary: Get letter.
      description: Get a letter.
      produces:
        - text/plain
      responses:
        200:
          description: A letter.
          schema:
            type: string

Steps to reproduce

Save the above spec as spec/test.yml and run the following:

docker run --rm --volume "$(pwd)":/data quay.io/goswagger/swagger:0.16.0 validate /data/spec/test.yml

The result is json: cannot unmarshal bool into Go struct field SwaggerProps.paths of type string. This is unexpected.

If you change the parameter name from y to z (or lots of other letters, I didn't try them all), validation succeeds (as expected).

Environment

swagger version: 0.16.0
go version: 1.11
OS: macOS 10.13

[tschaub]

I just noticed that if I quote the letter y, things work again. Curious why this is required with y and not other letters.

[fredbi]

this is due to yaml: 'y' unmarshals as boolean true

[gregmarr]

Full list here, case does not matter: #1209 (comment)

[casualjim]

http://yaml.org/type/bool.html

[tschaub]

Thanks for the responses. I'll file away this bit of new yaml knowledge.