paper-trail-gem--paper_trail/spec/paper_trail/config_spec.rb

require "rails_helper"

module PaperTrail
  RSpec.describe Config do
    describe ".instance" do
      it "returns the singleton instance" do
        expect { described_class.instance }.to_not raise_error
      end
    end

    describe ".new" do
      it "raises NoMethodError" do
        expect { described_class.new }.to raise_error(NoMethodError)
      end
    end
  end
end