Method waitForElementLayout

testing/helpers/service.js:318–337

* @param {string} selector * @param {number=} timeout * @return {!Promise}

(selectorOrElement, timeout = 10000)

   * @return {!Promise}
   */
  waitForElementLayout(selectorOrElement, timeout = 10000) {
    const elements = this.querySelectorAllOrElement(selectorOrElement);
    if (!elements.length) {
      throw new Error(`BrowserController query failed: ${selectorOrElement}`);
    }
    return poll(
      `"${selectorOrElement}" to layout`,
      () => {
        // AMP elements set `readyState` to complete when their
        // layoutCallback() promise is resolved.
        const someNotReady = [].some.call(
          elements,
          (e) => e.readyState !== 'complete'
        );
        return !someNotReady;
      },
      /* onError */ undefined,
      timeout
    );
  }

  click(selectorOrElement) {
    const element = this.querySelectorOrElement(selectorOrElement);