Add auto-correction for Lint/BooleanSymbol cop

CHANGELOG.md

@@ -17,6 +17,7 @@
 * [#7809](https://github.com/rubocop-hq/rubocop/pull/7809): Add auto-correction for `Style/EndBlock` cop. ([@tejasbubane][])
 * [#7739](https://github.com/rubocop-hq/rubocop/pull/7739): Add `IgnoreNotImplementedMethods` configuration to `Lint/UnusedMethodArgument`. ([@tejasbubane][])
 * [#7740](https://github.com/rubocop-hq/rubocop/issues/7740): Add `AllowModifiersOnSymbols` configuration to `Style/AccessModifierDeclarations`. ([@tejasbubane][])
+* [#7812](https://github.com/rubocop-hq/rubocop/pull/7812): Add auto-correction for `Lint/BooleanSymbol` cop. ([@tejasbubane][])
 
 ### Bug fixes
 

config/default.yml

@@ -1323,6 +1323,7 @@ Lint/BooleanSymbol:
   Description: 'Check for `:true` and `:false` symbols.'
   Enabled: true
   VersionAdded: '0.50'
+  VersionChanged: '0.81'
 
 Lint/CircularArgumentReference:
   Description: "Default values in optional keyword arguments and optional ordinal arguments should not refer back to the name of the argument."

lib/rubocop/cop/lint/boolean_symbol.rb

@@ -32,6 +32,18 @@ def on_sym(node)
 
           add_offense(node, message: format(MSG, boolean: node.value))
         end
+
+        def autocorrect(node)
+          lambda do |corrector|
+            boolean_literal = node.source.delete(':')
+            parent = node.parent
+            if parent&.pair_type?
+              corrector.remove(parent.loc.operator)
+              boolean_literal = "#{node.source} =>"
+            end
+            corrector.replace(node.loc.expression, boolean_literal)
+          end
+        end
       end
     end
   end

manual/cops_lint.md

@@ -166,7 +166,7 @@ BigDecimal(123.456, 3)
 
 Enabled by default | Safe | Supports autocorrection | VersionAdded | VersionChanged
 --- | --- | --- | --- | ---
-Enabled | Yes | No | 0.50 | -
+Enabled | Yes | Yes  | 0.50 | 0.81
 
 This cop checks for `:true` and `:false` symbols.
 In most cases it would be a typo.

spec/rubocop/cop/lint/boolean_symbol_spec.rb

@@ -8,13 +8,21 @@
       :true
       ^^^^^ Symbol with a boolean name - you probably meant to use `true`.
     RUBY
+
+    expect_correction(<<~RUBY)
+      true
+    RUBY
   end
 
   it 'registers an offense when using `:false`' do
     expect_offense(<<~RUBY)
       :false
       ^^^^^^ Symbol with a boolean name - you probably meant to use `false`.
     RUBY
+
+    expect_correction(<<~RUBY)
+      false
+    RUBY
   end
 
   context 'when using the new hash syntax' do
@@ -23,13 +31,21 @@
         { true: 'Foo' }
           ^^^^ Symbol with a boolean name - you probably meant to use `true`.
       RUBY
+
+      expect_correction(<<~RUBY)
+        { true => 'Foo' }
+      RUBY
     end
 
     it 'registers an offense when using `false:`' do
       expect_offense(<<~RUBY)
-        { false: 'Bar' }
+        { false: :bar }
           ^^^^^ Symbol with a boolean name - you probably meant to use `false`.
       RUBY
+
+      expect_correction(<<~RUBY)
+        { false => :bar }
+      RUBY
     end
   end