Rename the module and add a simple test to check

if all methods are also presented in the user.

app/models/deploy_token.rb

 class DeployToken < ActiveRecord::Base
   include Expirable
   include TokenAuthenticatable
-  include PolicyCheckable
+  include PolicyActor
   add_authentication_token_field :token
 
   AVAILABLE_SCOPES = %i(read_repository read_registry).freeze

app/policies/concerns/policy_checkable.rb → app/policies/concerns/policy_actor.rb

@@ -3,7 +3,7 @@
 # Include this module if we want to pass something else than the user to
 # check policies. This defines several methods which the policy checker
 # would call and check.
-module PolicyCheckable
+module PolicyActor
   extend ActiveSupport::Concern
 
   def blocked?

spec/policies/concerns/policy_actor_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe PolicyActor do
+  it 'implements all the methods from user' do
+    methods = subject.instance_methods
+
+    # User.instance_methods do not return all methods until an instance is
+    # initialized. So here we just use an instance
+    expect(build(:user).methods).to include(*methods)
+  end
+end