[Fix #8514] Correct multiple Style/MethodDefParentheses per file.

Fix the ability to correctly identify and auto-correct multiple
MethodDefParentheses violations in a single file.

CHANGELOG.md

@@ -11,6 +11,7 @@
 * [#8810](https://github.com/rubocop-hq/rubocop/pull/8810): Fix multiple offense detection for `Style/RaiseArgs`. ([@pbernays][])
 * [#8809](https://github.com/rubocop-hq/rubocop/pull/8809): Fix multiple offense detection for `Style/For`. ([@pbernays][])
 * [#8801](https://github.com/rubocop-hq/rubocop/issues/8801): Fix `Layout/SpaceAroundEqualsInParameterDefault` only registered once in a line. ([@rdunlop][])
+* [#8514](https://github.com/rubocop-hq/rubocop/issues/8514): Correct multiple `Style/MethodDefParentheses` per file. ([@rdunlop][])
 
 ### Changes
 

lib/rubocop/cop/style/method_def_parentheses.rb

@@ -140,16 +140,12 @@ def arguments_without_parentheses?(node)
         def missing_parentheses(node)
           location = node.arguments.source_range
 
-          return unless unexpected_style_detected(:require_no_parentheses)
-
           add_offense(location, message: MSG_MISSING) do |corrector|
             correct_definition(node, corrector)
           end
         end
 
         def unwanted_parentheses(args)
-          return unless unexpected_style_detected(:require_parentheses)
-
           add_offense(args, message: MSG_PRESENT) do |corrector|
             # offense is registered on args node when parentheses are unwanted
             correct_arguments(args, corrector)

spec/rubocop/cop/style/method_def_parentheses_spec.rb

@@ -65,6 +65,26 @@ def self.test(param); end
       RUBY
     end
 
+    it 'auto-adds required parens for a defs after a passing method' do
+      expect_offense(<<~RUBY)
+        def self.fine; end
+
+        def self.test param; end
+                      ^^^^^ Use def with parentheses when there are parameters.
+
+        def self.test2 param; end
+                       ^^^^^ Use def with parentheses when there are parameters.
+      RUBY
+
+      expect_correction(<<~RUBY)
+        def self.fine; end
+
+        def self.test(param); end
+
+        def self.test2(param); end
+      RUBY
+    end
+
     it 'auto-adds required parens to argument lists on multiple lines' do
       expect_offense(<<~RUBY)
         def test one,