require 'rails_helper' describe SimilarTopicsController do context 'similar_to' do let(:title) { 'this title is long enough to search for' } let(:raw) { 'this body is long enough to search for' } it "requires a title" do expect do get :index, params: { raw: raw }, format: :json end.to raise_error(ActionController::ParameterMissing) end it "returns no results if the title length is below the minimum" do Topic.expects(:similar_to).never SiteSetting.min_title_similar_length = 100 get :index, params: { title: title, raw: raw }, format: :json json = ::JSON.parse(response.body) expect(json["similar_topics"].size).to eq(0) end describe "minimum_topics_similar" do before do SiteSetting.minimum_topics_similar = 30 end after do get :index, params: { title: title, raw: raw }, format: :json end describe "With enough topics" do before do Topic.stubs(:count).returns(50) end it "deletes to Topic.similar_to if there are more topics than `minimum_topics_similar`" do Topic.expects(:similar_to).with(title, raw, nil).returns([Fabricate(:topic)]) end describe "with a logged in user" do let(:user) { log_in } it "passes a user through if logged in" do Topic.expects(:similar_to).with(title, raw, user).returns([Fabricate(:topic)]) end end end it "does not call Topic.similar_to if there are fewer topics than `minimum_topics_similar`" do Topic.stubs(:count).returns(10) Topic.expects(:similar_to).never end end end end