[BUG] Example group metadata does not support symbol shorthand

[franzliedke]

Describe the bug

The custom example groups in RSwag (for example response) do not support symbol-style example metadata.

Steps to Test or Reproduce

Example spec:

response "201", "article created", :skip_bullet do
  # ...
end

This is perfectly valid in RSpec, but leads to the following error inside RSwag:

NoMethodError:
  undefined method `[]=' for :skip_bullet:Symbol

Expected behavior

The spec should be equivalent to the following, which works just fine:

response "201", "article created", skip_bullet: true do
  # ...
end

Additional context

This became a problem with the new MetadataStyle cop in rubocop-rspec, which has support for two enforced styles, hash or symbol.

Rubocop understands that response defines an example group with the following config:

RSpec:
  Language:
    ExampleGroups:
      Regular:
        - response

Dependency versions

The version of are you using for:

• Rswag: 2.9.0
• RSpec: 3.12
• Rails: 7.0.8
• Ruby: 3.2.2

Relates to which version of OAS (OpenAPI Specification)

Not related to OAS