# frozen_string_literal: true describe "Production mode debug shims", type: :system, js: true do it "can successfully print a deprecation message after applying prod shims" do visit("/latest") expect(find("#main-outlet-wrapper")).to be_visible # Intercept console.warn so we can enumerate calls later page.execute_script <<~JS window.intercepted_warnings = []; console.warn = (msg) => window.intercepted_warnings.push([msg, (new Error()).stack]) JS # Apply deprecate shims. These are applied automatically in production # builds, but running a full production build for system specs would be # too slow page.execute_script <<~JS require("discourse/lib/deprecate-shim").applyShim(); JS # Trigger a deprecation, then return the console.warn calls warn_calls = page.execute_script <<~JS const { deprecate } = require('@ember/debug'); deprecate("Some message", false, { id: "some.id" }) return window.intercepted_warnings JS expect(warn_calls.size).to eq(1) call, backtrace = warn_calls[0] expect(call).to eq("DEPRECATION: Some message [deprecation id: some.id]") expect(backtrace).to include("shimLogDeprecationToConsole") end end