Don't include the parent in search results if it matches

app/finders/group_children_finder.rb

@@ -52,7 +52,7 @@ class GroupChildrenFinder
   end
   def subgroups_matching_filter
-    all_subgroups.search(params[:filter])
+    all_subgroups.where.not(id: parent_group).search(params[:filter])
   end
   def subgroups

spec/finders/group_children_finder_spec.rb

@@ -60,6 +60,12 @@ describe GroupChildrenFinder do
             expect(finder.execute).to contain_exactly(matching_project)
           end
+
+          it 'does not include the parent itself' do
+            group.update!(name: 'test')
+
+            expect(finder.execute).not_to include(group)
+          end
         end
       end
     end