### Question:
NwpTool extends BasicTool { static int computePastTimeStepCount(int timeStepCount) { return ((timeStepCount - 1) / 8) * 5; } NwpTool(); static void main(String[] args); @Override void initialize();  }### Answer:
@Test public void testComputePastTimeStepCount() throws Exception { assertEquals(20, NwpTool.computePastTimeStepCount(33)); assertEquals(10, NwpTool.computePastTimeStepCount(17)); }