SyncTaskExecutorConfiguration.class, WriterConfig.class,
MetricRepositoryAutoConfiguration.class);
DefaultGaugeService gaugeService = context.getBean(DefaultGaugeService.class);
assertNotNull(gaugeService);
gaugeService.submit("foo", 2.7);
MetricWriter writer = context.getBean("writer", MetricWriter.class);
verify(writer).set(any(Metric.class));
context.close();
}