Bypassing CanCan::AccessDenied while running RSpec tests

I'm trying to run a strong parameters test for my Restaurant model and am running into an error that's keeping from progressing in development . In its controller I have the CanCan method load_and_authorize_resource to permit only admins to create, update, and destroy these model instances:

class RestaurantsController < ApplicationController
  load_and_authorize_resource param_method:  :restaurant_params, find_by: :slug
  ...
end

When it comes to running tests though I get the error:

  1) RestaurantsController should permit POST #create to receive parameters :name
     Failure/Error: should permit(:name).
     CanCan::AccessDenied:
       You are not authorized to access this page.

Is there simple way to bypass this authorization? I've looked all throughout SO and there doesn't seem to be a clear answer.

Test

describe RestaurantsController do
  it { should permit(:name).for(:create) }
end