@Test public void testGetSlingIdFromTooLargeData() throws IOException {
  final String expected=SlingIdUtil.createSlingId();
  final String data=expected + RandomStringUtils.randomAscii(1024 * 1024);
  SlingIdUtil.writeSlingId(slingIdFile,data);
  final SlingSettingsService slingSettingsService=createSlingSettingsService(slingIdFile,optionsFile);
  final String slingId=slingSettingsService.getSlingId();
  assertNotNull(slingId);
  assertEquals(expected,slingId);
}