Support autocorrection for Style/RedundantInitialize

This PR supports autocorrection for `Style/RedundantInitialize`.

changelog/new_support_autocorrect_for_style_redundant_initialize.md

@@ -0,0 +1 @@
+* [#10552](https://github.com/rubocop/rubocop/pull/10552): Support autocorrection for `Style/RedundantInitialize`. ([@koic][])

lib/rubocop/cop/style/redundant_initialize.rb

@@ -96,6 +96,8 @@ module Style
       #
       class RedundantInitialize < Base
         include CommentsHelp
+        include RangeHelp
+        extend AutoCorrector
 
         MSG = 'Remove unnecessary `initialize` method.'
         MSG_EMPTY = 'Remove unnecessary empty `initialize` method.'
@@ -109,20 +111,26 @@ def on_def(node)
           return if acceptable?(node)
 
           if node.body.nil?
-            add_offense(node, message: MSG_EMPTY)
+            register_offense(node, MSG_EMPTY)
           else
             return if node.body.begin_type?
 
             if (args, super_node = initialize_forwards?(node))
               return unless same_args?(super_node, args)
 
-              add_offense(node)
+              register_offense(node, MSG)
             end
           end
         end
 
         private
 
+        def register_offense(node, message)
+          add_offense(node, message: message) do |corrector|
+            corrector.remove(range_by_whole_lines(node.source_range, include_final_newline: true))
+          end
+        end
+
         def acceptable?(node)
           !node.method?(:initialize) || forwards?(node) || allow_comments?(node)
         end

spec/rubocop/cop/style/redundant_initialize_spec.rb

@@ -18,12 +18,14 @@ def do_something
     RUBY
   end
 
-  it 'registers an offense for an empty `initialize` method' do
+  it 'registers and corrects an offense for an empty `initialize` method' do
     expect_offense(<<~RUBY)
       def initialize
       ^^^^^^^^^^^^^^ Remove unnecessary empty `initialize` method.
       end
     RUBY
+
+    expect_correction('')
   end
 
   it 'does not register an offense for an `initialize` method with only a comment' do
@@ -34,31 +36,37 @@ def initialize
     RUBY
   end
 
-  it 'registers an offense for an `initialize` method that only calls `super`' do
+  it 'registers and corrects an offense for an `initialize` method that only calls `super`' do
     expect_offense(<<~RUBY)
       def initialize
       ^^^^^^^^^^^^^^ Remove unnecessary `initialize` method.
         super
       end
     RUBY
+
+    expect_correction('')
   end
 
-  it 'registers an offense for an `initialize` method with arguments that only calls `super`' do
+  it 'registers and corrects an offense for an `initialize` method with arguments that only calls `super`' do
     expect_offense(<<~RUBY)
       def initialize(a, b)
       ^^^^^^^^^^^^^^^^^^^^ Remove unnecessary `initialize` method.
         super
       end
     RUBY
+
+    expect_correction('')
   end
 
-  it 'registers an offense for an `initialize` method with arguments that only calls `super` with explicit args' do
+  it 'registers and corrects an offense for an `initialize` method with arguments that only calls `super` with explicit args' do
     expect_offense(<<~RUBY)
       def initialize(a, b)
       ^^^^^^^^^^^^^^^^^^^^ Remove unnecessary `initialize` method.
         super(a, b)
       end
     RUBY
+
+    expect_correction('')
   end
 
   it 'does not register an offense for an `initialize` method that calls another method' do
@@ -103,13 +111,15 @@ def initialize(a, b)
     RUBY
   end
 
-  it 'registers an offense for an `initialize` method with no arguments that calls `super` with no arguments' do
+  it 'registers and corrects an offense for an `initialize` method with no arguments that calls `super` with no arguments' do
     expect_offense(<<~RUBY)
       def initialize()
       ^^^^^^^^^^^^^^^^ Remove unnecessary `initialize` method.
         super()
       end
     RUBY
+
+    expect_correction('')
   end
 
   it 'does not register an offense for an `initialize` method with a default argument that calls `super`' do
@@ -176,13 +186,15 @@ def initialize(...)
   context 'when `AllowComments: false`' do
     let(:cop_config) { { 'AllowComments' => false } }
 
-    it 'registers an offense for an `initialize` method with only a comment' do
+    it 'registers and corrects an offense for an `initialize` method with only a comment' do
       expect_offense(<<~RUBY)
         def initialize
         ^^^^^^^^^^^^^^ Remove unnecessary empty `initialize` method.
           # initializer
         end
       RUBY
+
+      expect_correction('')
     end
   end
 end