Promo Migrator: Ignore missing rules and actions

lib/solidus_friendly_promotions/promotion_migrator.rb

@@ -28,10 +28,10 @@ def call
           generate_new_promotion_rules(old_promotion_rule)
         end
         new_promotion.actions = promotion.actions.flat_map do |old_promotion_action|
-          generate_new_promotion_actions(old_promotion_action).tap do |new_promotion_action|
+          generate_new_promotion_actions(old_promotion_action)&.tap do |new_promotion_action|
             new_promotion_action.original_promotion_action = old_promotion_action
           end
-        end
+        end.compact
         new_promotion.save!
         copy_promotion_code_batches(new_promotion)
         copy_promotion_codes(new_promotion)
@@ -79,7 +79,7 @@ def generate_new_promotion_actions(old_promotion_action)
       promo_action_config = promotion_map[:actions][old_promotion_action.class]
       if promo_action_config.nil?
         puts("#{old_promotion_action.class} is not supported")
-        return []
+        return nil
       end
       promo_action_config.call(old_promotion_action)
     end

spec/lib/solidus_friendly_promotions/promotion_migrator_spec.rb

@@ -51,4 +51,19 @@
       expect(promotion_code_batch.base_code).to eq("DISNEY4LIFE")
     end
   end
+
+  context "if our rules and actions are missing from the promotion map" do
+    let(:promotion_map) do
+      {
+        rules: {},
+        actions: {}
+      }
+    end
+
+    it "still creates the promotion, but without rules or actions" do
+      subject
+      expect(Spree::Promotion.count).not_to be_zero
+      expect(SolidusFriendlyPromotions::Promotion.count).to eq(Spree::Promotion.count)
+    end
+  end
 end