Support autocorrect for Lint/DisjunctiveAssignmentInConstructor cop

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### New features
 
 * [#7333](https://github.com/rubocop-hq/rubocop/issues/7333): Add new `Style/RedundantFileExtensionInRequire` cop. ([@fatkodima][])
+* [#8316](https://github.com/rubocop-hq/rubocop/pull/8316): Support autocorrect for `Lint/DisjunctiveAssignmentInConstructor` cop. ([@fatkodima][])
 * [#8242](https://github.com/rubocop-hq/rubocop/pull/8242): Internal profiling available with `bin/rubocop-profile` and rake tasks. ([@marcandre][])
 * [#8295](https://github.com/rubocop-hq/rubocop/pull/8295): Add new `Style/ArrayCoercion` cop. ([@fatkodima][])
 * [#8293](https://github.com/rubocop-hq/rubocop/pull/8293): Add new `Lint/DuplicateElsifCondition` cop. ([@fatkodima][])

config/default.yml

@@ -1397,6 +1397,7 @@ Lint/DisjunctiveAssignmentInConstructor:
   Enabled: true
   Safe: false
   VersionAdded: '0.62'
+  VersionChanged: '0.88'
 
 Lint/DuplicateCaseCondition:
   Description: 'Do not repeat values in case conditionals.'

docs/modules/ROOT/pages/cops_lint.adoc

@@ -539,9 +539,9 @@ OpenSSL::Digest.digest('SHA256', 'foo')
 
 | Enabled
 | No
-| No
+| Yes (Unsafe)
 | 0.62
-| -
+| 0.88
 |===
 
 This cop checks constructors for disjunctive assignments that should

lib/rubocop/cop/lint/disjunctive_assignment_in_constructor.rb

@@ -22,7 +22,9 @@ module Lint
       #   def initialize
       #     @x = 1
       #   end
-      class DisjunctiveAssignmentInConstructor < Cop
+      class DisjunctiveAssignmentInConstructor < Base
+        extend AutoCorrector
+
         MSG = 'Unnecessary disjunctive assignment. Use plain assignment.'
 
         def on_def(node)
@@ -73,7 +75,11 @@ def check_body_lines(lines)
         # @param [Node] node a disjunctive assignment
         def check_disjunctive_assignment(node)
           lhs = node.child_nodes.first
-          add_offense(node, location: :operator) if lhs.ivasgn_type?
+          return unless lhs.ivasgn_type?
+
+          add_offense(node.loc.operator) do |corrector|
+            corrector.replace(node.loc.operator, '=')
+          end
         end
       end
     end

spec/rubocop/cop/lint/disjunctive_assignment_in_constructor_spec.rb

@@ -43,7 +43,7 @@ def initialize
     end
 
     context 'LHS is ivar' do
-      it 'registers an offense' do
+      it 'registers an offense and corrects' do
         expect_offense(<<~RUBY)
           class Banana
             def initialize
@@ -52,10 +52,18 @@ def initialize
             end
           end
         RUBY
+
+        expect_correction(<<~RUBY)
+          class Banana
+            def initialize
+              @delicious = true
+            end
+          end
+        RUBY
       end
 
       context 'constructor calls super after assignment' do
-        it 'registers an offense' do
+        it 'registers an offense and corrects' do
           expect_offense(<<~RUBY)
             class Banana
               def initialize
@@ -65,6 +73,15 @@ def initialize
               end
             end
           RUBY
+
+          expect_correction(<<~RUBY)
+            class Banana
+              def initialize
+                @delicious = true
+                super
+              end
+            end
+          RUBY
         end
       end