store.addGauge(gauge);
Thread.sleep(250);
store.shutdown();
final Collection<Role> gauges = store.gauges();
assertEquals(1, gauges.size());
assertEquals(gauge.role(), gauges.iterator().next());
final SortedMap<Long,Double> gaugeValues = store.getGaugeValues(new GaugeValuesRequest(0, System.currentTimeMillis(), Role.FAILURES));
assertTrue(gaugeValues.size() > 0);