### Question:
MetricsImpl implements Metrics { @Override public long getValue() { return value.get(); } MetricsImpl(long start, long end, long initialValue);  MetricsImpl(long start, long end); @Override void add(long delta); @Override long getValue(); @Override long getStart(); @Override long getEnd();  }### Answer:
@Test public void getValue() { Metrics metrics = getMetrics(); assertThat(metrics.getValue()).isEqualTo(0L); }