Function getActiveCellId

src/aria/grid/grid.spec.ts:82–88

()

  };

  function getActiveCellId(): string | null {
    if (fixture.componentInstance.focusMode() === 'roving') {
      const activeEl = gridElement.querySelector('[tabindex="0"]');
      return activeEl ? activeEl.id : null;
    }
    return gridElement.getAttribute('aria-activedescendant');
  }

  async function setupGrid(opts?: {
    disabled?: boolean;