Unit test

spec/lib/config_spec.rb

@@ -533,6 +533,19 @@ class ApplicationWithOwner < ActiveRecord::Base
       end
       expect(config.custom_access_token_attributes).to eq([:tenant_name])
     end
+
+    it "removes unrecognized attributes" do
+      # Once for access_grant_model, and again for access_token_model.
+      expect(Rails.logger).to receive(:warn).with(/custom attribute will be ignored/)
+      expect(Rails.logger).to receive(:warn).with(/custom attribute will be ignored/)
+
+      Doorkeeper.configure do
+        orm DOORKEEPER_ORM
+        custom_access_token_attributes [:tenant_name, :unrecognized_attribute]
+      end
+
+      expect(config.custom_access_token_attributes).to eq([:tenant_name])
+    end
   end
 
   describe "application_secret_generator" do