Testing papertrail in a model concern using RSpec Rails

I have added an ActiveSupport::Concern that declares has_paper_trail with some additional options in the class method. This concern is included by the actual model, that can now have versioning enabled on it via papertrail

Now I want to test this concern only using RSpecs on a mock model (that does not currently exist in the database), and make sure that the versions table gets populated correctly.

So I have an RSpec where I am doing this :

describe PapertrailConcern do
  before(:all) do
    class PaperTrailModel < ActiveRecord::Base
      include PapertrailConcern

      has_paper_trail
    end
  end

  it 'stores changes to model in paper trail versions' do
    # check if PaperTrailModel attribute changes are tracked in versions
  end
end

Since the PaperTrail Model does not exist in the database, I get this error if I do any operations on it:

  PG::UndefinedTable: ERROR:  relation "paper_trail_models" does not exist
       LINE 5:                WHERE a.attrelid = '"paper_trail_models"'::re...
                                                 ^

I also considered using Rspec Mock Model, but I am not sure how to enable papertrail versioning on a mock model. Haven't found anything along those lines online

Has anyone run into this issue or would happen to know how I could declare a test model and test if papertrail versioning works correctly on it?