Include subgroups when searching inside a group

changelogs/unreleased/include-subgroups-in-group-search.yml

+---
+title: Include subgroups when searching inside a group
+merge_request: 22991
+author:
+type: fixed

lib/gitlab/group_search_results.rb

@@ -30,7 +30,7 @@ module Gitlab
     # rubocop:enable CodeReuse/ActiveRecord
 
     def issuable_params
-      super.merge(group_id: group.id)
+      super.merge(group_id: group.id, include_subgroups: true)
     end
   end
 end

spec/lib/gitlab/group_search_results_spec.rb

@@ -67,5 +67,11 @@ describe Gitlab::GroupSearchResults do
 
       expect(result).to eq []
     end
+
+    it 'sets include_subgroups flag by default' do
+      result = described_class.new(user, anything, group, 'gob')
+
+      expect(result.issuable_params[:include_subgroups]).to eq(true)
+    end
   end
 end