Function getFocusIndex

src/material/list/selection-list.spec.ts:50–52

()

    });

    function getFocusIndex() {
      return listOptions.findIndex(o => document.activeElement === o.nativeElement);
    }

    it('should be able to set a value on a list option', () => {
      const optionValues = ['inbox', 'starred', 'sent-mail', 'archive', 'drafts'];