Function expectBodyToBecomeVisible

testing/iframe.js:523–539

(win, opt_timeout)

 * @return {!Promise}
 */
export function expectBodyToBecomeVisible(win, opt_timeout) {
  return poll(
    'expect body to become visible',
    () => {
      return (
        win &&
        win.document &&
        win.document.body &&
        ((win.document.body.style.visibility == 'visible' &&
          win.document.body.style.opacity != '0') ||
          win.document.body.style.opacity == '1')
      );
    },
    undefined,
    opt_timeout || 5000
  );
}

/**
 * For the given iframe, makes the creation of iframes and images