Argo CLI: Lint: Enums can't have default in WorkflowTemplate

[frmrm]

Pre-requisites

• I have double-checked my configuration
• I can confirm the issues exists when I tested with :latest
• I'd like to contribute the fix myself (see contributing guide)

What happened/what you expected to happen?

This appears to be a variation of #6044.

When creating a WorkflowTemplate I would expect that I can define an enum parameter that also provides a default matching one of the enum values if no value was provided when the WorkflowTemplate becomes an actual Workflow. This does not appear to be the case. When I attempt to argo lint this I get the following error:

in "value-bug-example" (WorkflowTemplate): rpc error: code = InvalidArgument desc = spec.arguments.test-parameter.value is required

Version

v3.4.9

Paste a small workflow that reproduces the issue. We must be able to run the workflow; don't enter a workflows that uses private images.

apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
  name: value-bug-example

spec:
  arguments:
    parameters:
      - name: test-parameter
        enum: ['hello', 'goodbye']
        default: 'hello'

  templates:
    - name: test
      script:
        image: ubuntu
        source: echo {{workflow.parameters.test-parameter}}

Logs from the workflow controller

N/A

Logs from in your workflow's wait container

N/A

[caelan-io]

Thanks for reporting this. We're looking for more contributors to support argo lint. Would you be interested in contributing this fix?

[frmrm]

Thanks for reporting this. We're looking for more contributors to support argo lint. Would you be interested in contributing this fix?

Yeah why not. I haven't had much time for OSS since my youngest was born and I've benefitted from Argo a lot. I'll probably do it from my personal account, @farmdawgnation. (I like to keep some separation between the "for work" and "not for work" stuff.)

[caelan-io]

Congrats on your growing family! We completely understand that. Other contributors and I are happy to support you in investigating this and reviewing your PR. Please feel free to tag me here or on Slack if any questions as you're getting started.

Note that we are working on improving the local dev setup but it can be a little rough around the edges for newcomers. If you're not on macOS we recommend using Nix to get started and develop locally.