glob not resolving dash-case-filenames

[rperryng]

A snapshot spec defined like:

suite: Full Snapshot
templates:
  - '*.yaml'
tests:
  - it: matches the snapshot
    asserts:
      - matchSnapshot: {}

and a suite of files like:

❯ tree templates                       
templates
├── NOTES.txt
├── _helpers.tpl
├── dash-case-filename.yaml
├── deployment.yaml
├── hpa.yaml
├── ingress.yaml
├── service.yaml
└── serviceaccount.yaml

the dash-case-filename.yaml file won't be picked up by the snapshot. Explicitly mentioning the file does seem to suffice as a work-around though. That is to say:

suite: Full Snapshot
templates:
  - '*.yaml'
+ - dash-case-filename.yaml
tests:
  - it: matches the snapshot
    asserts:
      - matchSnapshot: {}

will include the dash-case-filename.yaml template in the snapshot.

Is this expected behaviour? Helm docs seem to recommend using dashes in template filenames:

Template file names should use dashed notation (my-example-configmap.yaml), not camelcase.

(source)