Order items may not be product variations

Thank you for that huge improvements !!

I opened a PR on Github with that patch to run Tests & Code Styles on Github Actions (faster than Drupal CI).
https://github.com/antistatique/drupal-commerce-trustedshops/pull/11

We still have some tests issues to works on before merging.

For me the code is pretty perfect ! Many thanks for that huge quality code !!

Still, before merging, I would have a tests that cover the following code

+++ b/src/API/Review.php
@@ -80,17 +94,26 @@ class Review {
+      // Open product data to alterations.
+      $event = new AlterProductDataEvent($trusted_product, $order_item);
+      $this->eventDispatcher->dispatch(TrustedShopsEvents::ALTER_PRODUCT_DATA, $event);

Indeed, the current tests show how works AlterProductDataEvent but nothing demonstrate the event is fired properly.

Thanks Aerzas !

I added another tests that ensure Drupal\commerce_trustedshops\API\Review::triggerShopReview work with a order item without purchased entity.