require 'rails_helper' describe TopicParticipantsSummary do describe '#summary' do let(:summary) { described_class.new(topic, user: topic_creator).summary } let(:topic) do Fabricate(:topic, user: topic_creator, archetype: Archetype::private_message, category_id: nil ) end let(:topic_creator) { Fabricate(:user) } let(:user1) { Fabricate(:user) } let(:user2) { Fabricate(:user) } let(:user3) { Fabricate(:user) } let(:user4) { Fabricate(:user) } let(:user5) { Fabricate(:user) } it "must never contains the user and at most 4 participants" do topic.allowed_user_ids = [user1.id, user2.id, user3.id, user4.id, user5.id] expect(summary.map(&:user)).to eq([user1, user2, user3, user4]) end end end