Add T::Array[String] support for webhook fields

Author: SheldonNunes

lib/shopify_api/webhooks/registry.rb

@@ -13,7 +13,7 @@ class << self
             delivery_method: Symbol,
             path: String,
             handler: T.nilable(Handler),
-            fields: T.nilable(String)).void
+            fields: T.nilable(T.any(String, T::Array[String]))).void
         end
         def add_registration(topic:, delivery_method:, path:, handler: nil, fields: nil)
           @registry[topic] = case delivery_method

test/webhooks/registry_test.rb

@@ -94,6 +94,10 @@ def test_http_registration_with_fields_add_and_update
         do_registration_test(:http, "test-webhooks", fields: "field1, field2")
       end
 
+      def test_http_registration_with_fields_array_add_and_update
+        do_registration_test(:http, "test-webhooks", fields: ["field1", "field2"])
+      end
+
       def test_raises_on_http_registration_check_error
         do_registration_check_error_test(:http, "test-webhooks")
       end
@@ -106,6 +110,10 @@ def test_pubsub_registration_with_fields_add_and_update
         do_registration_test(:pub_sub, "pubsub://my-project-id:my-topic-id", fields: "field1, field2")
       end
 
+      def test_pubsub_registration_with_fields_array_add_and_update
+        do_registration_test(:pub_sub, "pubsub://my-project-id:my-topic-id", fields: ["field1"], ["field2"])
+      end
+
       def test_raises_on_pubsub_registration_check_error
         do_registration_check_error_test(:pub_sub, "pubsub://my-project-id:my-topic-id")
       end
@@ -118,6 +126,10 @@ def test_eventbridge_registration_with_fields_add_and_update
         do_registration_test(:event_bridge, "test-webhooks", fields: "field1, field2")
       end
 
+      def test_eventbridge_registration_with_fields_array_add_and_update
+        do_registration_test(:event_bridge, "test-webhooks", fields: ["field1"], ["field2"])
+      end
+
       def test_raises_on_eventbridge_registration_check_error
         do_registration_check_error_test(:event_bridge, "test-webhooks")
       end