Function stubPostMessage

tests/unit_tests/ui_component_test.js:6–13

(iframeEl, fn)

import "../../content_scripts/ui_component.js";

function stubPostMessage(iframeEl, fn) {
  if (!iframeEl || !fn) throw new Error("iframeEl and fn are required.");
  Object.defineProperty(iframeEl, "contentWindow", {
    value: { postMessage: fn },
    writable: false,
    configurable: true,
  });
}

context("UIComponent", () => {
  let c;