Rails/EnumSyntax fails to detect non-literal mapping Hashes

[wenley]

The recently-introduced Rails/EnumSyntax cop successfully works with literal mapping Hashes. e.g.

enum(column_name: { "a" => "a", "b" => "b" })

However, it fails to detect non-literal mapping Hashes, e.g.

VALUES = ["a", "b"]
enum(column_name: VALUES.zip(VALUES).to_h)

---

Expected behavior

The second example above should be flagged as a violation, and should be auto-corrected to:

enum(:column_name, VALUES.zip(VALUES).to_h)

Actual behavior

The example is not detected as an issue.

Steps to reproduce the problem

Add the following lines to a model file and see the difference in reported violations when running bundle exec rubocop

  # Correctly gets flagged
  enum(column_one: { "a" => "a", "b" => "b" })

  # Incorrectly does not get flagged
  VALUES = ["a", "b"]
  enum(column_two: VALUES.zip(VALUES).to_h)

RuboCop version

$ bundle exec rubocop -V
1.65.1 (using Parser 3.3.4.2, rubocop-ast 1.32.1, running on ruby 3.3.1) [arm64-darwin23]
  - rubocop-capybara 2.21.0
  - rubocop-factory_bot 2.26.1
  - rubocop-performance 1.21.1
  - rubocop-rails 2.26.0
  - rubocop-rake 0.6.0
  - rubocop-rspec 3.0.4