Merge branch '32977-user-autocomplete-per_page-does-not-work' into 'master'

Resolve "User autocomplete per_page does not work"

Closes #32977

See merge request !11742

app/controllers/autocomplete_controller.rb

@@ -9,7 +9,7 @@ class AutocompleteController < ApplicationController
     @users = @users.where.not(id: params[:skip_users]) if params[:skip_users].present?
     @users = @users.active
     @users = @users.reorder(:name)
-    @users = @users.page(params[:page])
+    @users = @users.page(params[:page]).per(params[:per_page])
 
     if params[:todo_filter].present? && current_user
       @users = @users.todo_authors(current_user.id, params[:todo_state_filter])

spec/controllers/autocomplete_controller_spec.rb

@@ -97,6 +97,20 @@ describe AutocompleteController do
       it { expect(body.size).to eq User.count }
     end
 
+    context 'limited users per page' do
+      let(:per_page) { 2 }
+
+      before do
+        sign_in(user)
+        get(:users, per_page: per_page)
+      end
+
+      let(:body) { JSON.parse(response.body) }
+
+      it { expect(body).to be_kind_of(Array) }
+      it { expect(body.size).to eq per_page }
+    end
+
     context 'unauthenticated user' do
       let(:public_project) { create(:project, :public) }
       let(:body) { JSON.parse(response.body) }