### Question:
ContinuousCheckPointThreshold extends AbstractCheckPointThreshold { @Override public long checkFrequencyMillis() { return 100; } ContinuousCheckPointThreshold(); @Override void initialize( long transactionId ); @Override void checkPointHappened( long transactionId ); @Override long checkFrequencyMillis();  }### Answer:
@Test public void continuousThresholdMustNotBusySpin() { ContinuousCheckPointThreshold threshold = new ContinuousCheckPointThreshold(); assertThat( threshold.checkFrequencyMillis(), greaterThan( 0L ) ); }