Error occurred with Rails/NotNullColumn cop

[fidalgo]

After updating rubocop and friends I start having this error:

An error occurred while Rails/NotNullColumn cop was inspecting db/migrate/20220208103203_add_widget_type_to_widgets.registrations_component.rb:27:8.

---

Expected behavior

Report errors or corrections

Actual behavior

error occurred while Rails/NotNullColumn cop was inspecting db/migrate/20220208103203_add_widget_type_to_widgets.registrations_component.rb:27:8. of this migration:

# typed: false
# frozen_string_literal: true

# This migration comes from registrations_component (originally 20220207163412)
class AddWidgetTypeToWidgets < ActiveRecord::Migration[6.1]
  def change
    add_enum_column(:registrations_component_widgets, :widget_type, %i[regular onsite])
  end

  private

  def add_enum_column(table_name, column_name, values, default: nil, type_name: nil)
    type_name ||= [table_name, :enum, column_name].join('_')
    default ||= values.first

    reversible do |migration|
      migration.up do
        ActiveRecord::Base.connection.execute <<~SQL
          DO $$ BEGIN
            IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = '#{type_name}') THEN
              CREATE TYPE #{type_name} AS
              ENUM (#{values.map { |val| "'#{val}'" }.join(', ')});
            END IF;
          END $$;
        SQL

        add_column(table_name, column_name, type_name, default: default)
      end

      migration.down do
        remove_column table_name, column_name

        ActiveRecord::Base.connection.execute <<~SQL
          DO $$ BEGIN
            DROP TYPE IF EXISTS #{type_name};
          END $$;
        SQL
      end
    end
  end
end

and the backtrace:

undefined method `value' for s(:lvar, :type_name):RuboCop::AST::Node
/home/fidalgo/.local/share/rtx/installs/ruby/3.2.0/lib/ruby/gems/3.2.0/gems/rubocop-rails-2.19.1/lib/rubocop/cop/rails/not_null_column.rb:48:in `block in check_add_column'
/home/fidalgo/.local/share/rtx/installs/ruby/3.2.0/lib/ruby/gems/3.2.0/gems/rubocop-rails-2.19.1/lib/rubocop/cop/rails/not_null_column.rb:36:in `add_not_null_column?'
/home/fidalgo/.local/share/rtx/installs/ruby/3.2.0/lib/ruby/gems/3.2.0/gems/rubocop-rails-2.19.1/lib/rubocop/cop/rails/not_null_column.rb:47:in `check_add_column'
/home/fidalgo/.local/share/rtx/installs/ruby/3.2.0/lib/ruby/gems/3.2.0/gems/rubocop-rails-2.19.1/lib/rubocop/cop/rails/not_null_column.rb:40:in `on_send'
/home/fidalgo/.local/share/rtx/installs/ruby/3.2.0/lib/ruby/gems/3.2.0/gems/rubocop-1.50.2/lib/rubocop/cop/commissioner.rb:143:in `public_send'

Steps to reproduce the problem

If you copy that code to a migration and run rubocop on that file the error will pop up.

RuboCop version

1.50.2 (using Parser 3.2.2.1, rubocop-ast 1.28.1, running on ruby 3.2.0) [x86_64-linux]
  - rubocop-graphql 1.1.1
  - rubocop-performance 1.17.1
  - rubocop-rails 2.19.1
  - rubocop-rspec 2.20.0
  - rubocop-sorbet 0.7.0

Also, on another project, with the same migration:

1.48.1 (using Parser 3.2.1.1, rubocop-ast 1.28.0, running on ruby 3.2.1) [x86_64-linux]
  - rubocop-minitest 0.30.0
  - rubocop-performance 1.16.0
  - rubocop-rails 2.18.0

[fidalgo]

I have created a test scenario, that will trigger this error fidalgo#1