Merge pull request #1126 from koic/fix_a_false_positive_for_rails_red…

…undant_active_record_all_method

Fix a false positive for `Rails/RedundantActiveRecordAllMethod`

changelog/fix_a_false_positive_for_rails_redundant_active_record_all_method.md

@@ -0,0 +1 @@
+* [#1126](https://github.com/rubocop/rubocop-rails/pull/1126): Fix a false positive for `Rails/RedundantActiveRecordAllMethod` when using some `Enumerable`'s methods with block argument. ([@koic][])

lib/rubocop/cop/rails/redundant_active_record_all_method.rb

@@ -133,12 +133,14 @@ class RedundantActiveRecordAllMethod < Base
           without
         ].to_set.freeze
 
+        POSSIBLE_ENUMERABLE_BLOCK_METHODS = %i[any? count find none? one? select sum].freeze
+
         def_node_matcher :followed_by_query_method?, <<~PATTERN
           (send (send _ :all) QUERYING_METHODS ...)
         PATTERN
 
         def on_send(node)
-          return unless followed_by_query_method?(node.parent)
+          return if !followed_by_query_method?(node.parent) || possible_enumerable_block_method?(node)
           return if node.receiver ? allowed_receiver?(node.receiver) : !inherit_active_record_base?(node)
 
           range_of_all_method = offense_range(node)
@@ -150,6 +152,13 @@ def on_send(node)
 
         private
 
+        def possible_enumerable_block_method?(node)
+          parent = node.parent
+          return false unless POSSIBLE_ENUMERABLE_BLOCK_METHODS.include?(parent.method_name)
+
+          parent.parent&.block_type? || parent.parent&.numblock_type? || parent.first_argument&.block_pass_type?
+        end
+
         def offense_range(node)
           range_between(node.loc.selector.begin_pos, node.source_range.end_pos)
         end

spec/rubocop/cop/rails/redundant_active_record_all_method_spec.rb

@@ -387,6 +387,48 @@ class User < ::ActiveRecord::Base
         end
       RUBY
     end
+
+    context 'using `any?`' do
+      it 'does not register an offense when using `any?` with block' do
+        expect_no_offenses(<<~RUBY)
+          User.all.any? { |item| item.do_something }
+        RUBY
+      end
+
+      it 'does not register an offense when using `any?` with numbered block' do
+        expect_no_offenses(<<~RUBY)
+          User.all.any? { _1.do_something }
+        RUBY
+      end
+
+      it 'does not register an offense when using `any?` with symbol block' do
+        expect_no_offenses(<<~RUBY)
+          User.all.any?(&:do_something)
+        RUBY
+      end
+    end
+
+    described_class::POSSIBLE_ENUMERABLE_BLOCK_METHODS.each do |method|
+      context "using `#{method}`" do
+        it "does not register an offense when using `#{method}` with block" do
+          expect_no_offenses(<<~RUBY)
+            User.all.#{method} { |item| item.do_something }
+          RUBY
+        end
+
+        it "does not register an offense when using `#{method}` with numbered block" do
+          expect_no_offenses(<<~RUBY)
+            User.all.#{method} { _1.do_something }
+          RUBY
+        end
+
+        it "does not register an offense when using `#{method}` with symbol block" do
+          expect_no_offenses(<<~RUBY)
+            User.all.#{method}(&:do_something)
+          RUBY
+        end
+      end
+    end
   end
 
   context 'with `AllowedReceivers` config' do