Support Rails 7 syntax for Rails/EnumUniqueness cop

Author: ytjmt

changelog/new_support_rails_7_syntax_for_rails_enum_uniqueness_cop.md

@@ -0,0 +1 @@
+* [#1298](https://github.com/rubocop/rubocop-rails/pull/1298): Support Rails 7 syntax for `Rails/EnumUniqueness` cop. ([@ytjmt][])

lib/rubocop/cop/rails/enum_uniqueness.rb

@@ -7,6 +7,18 @@ module Rails
       #
       # @example
       #   # bad
+      #   enum :status, { active: 0, archived: 0 }
+      #
+      #   # good
+      #   enum :status, { active: 0, archived: 1 }
+      #
+      #   # bad
+      #   enum :status, [:active, :archived, :active]
+      #
+      #   # good
+      #   enum :status, [:active, :archived]
+      #
+      #   # bad
       #   enum status: { active: 0, archived: 0 }
       #
       #   # good
@@ -24,6 +36,10 @@ class EnumUniqueness < Base
         RESTRICT_ON_SEND = %i[enum].freeze
 
         def_node_matcher :enum?, <<~PATTERN
+          (send nil? :enum $_ ${array hash} ...)
+        PATTERN
+
+        def_node_matcher :enum_with_old_syntax?, <<~PATTERN
           (send nil? :enum (hash $...))
         PATTERN
 
@@ -32,15 +48,17 @@ class EnumUniqueness < Base
         PATTERN
 
         def on_send(node)
-          enum?(node) do |pairs|
+          enum?(node) do |key, args|
+            consecutive_duplicates(args.values).each do |item|
+              add_offense(item, message: message(key, item))
+            end
+          end
+
+          enum_with_old_syntax?(node) do |pairs|
             pairs.each do |pair|
               enum_values(pair) do |key, args|
-                items = args.values
-
-                next unless duplicates?(items)
-
-                consecutive_duplicates(items).each do |item|
-                  add_offense(item, message: format(MSG, value: item.source, enum: enum_name(key)))
+                consecutive_duplicates(args.values).each do |item|
+                  add_offense(item, message: message(key, item))
                 end
               end
             end
@@ -57,6 +75,10 @@ def enum_name(key)
             key.source
           end
         end
+
+        def message(key, item)
+          format(MSG, value: item.source, enum: enum_name(key))
+        end
       end
     end
   end