学步园

这里给出java测试代码

1.Stopwatch类的实现

//filename:StopWatch.java<br /> package my.test;<br /> public class StopWatch<br /> {<br /> private long startTime = 0;<br /> private long stopTime = 0; </p> <p> public void start() {<br /> this.startTime = System.currentTimeMillis(); </p> <p> } </p> <p> public void stop() {<br /> this.stopTime = System.currentTimeMillis(); </p> <p> } </p> <p> //elaspsed time in milliseconds<br /> public long getElapsedTime() {<br /> long elapsed; </p> <p> elapsed = (stopTime - startTime); </p> <p> return elapsed;<br /> } </p> <p>}<br />  

2.测试工作类的实现

//filename：WorkClass.java<br /> package my.test;<br /> public class WorkClass<br /> {<br /> public double AddTest()<br /> {<br /> int count=10000000,i=0,j=0,count2=10;<br /> double sum=0.0;<br /> for(i=0;i<count2;i++)<br /> for(j=0;j<count;j++)<br /> sum+=j;<br /> return sum;<br /> }</p> <p> public double MulTest()<br /> {<br /> int count=10000*10000,i=0;<br /> double sum=0.0;<br /> for(i=1;i<count;i++)sum*=i;<br /> return sum;<br /> }</p> <p> public double DivTest()<br /> {<br /> int count=10000*10000,i=0;<br /> double sum=0.0;<br /> for(i=1;i<count;i++)sum/=i;<br /> return sum;<br /> }</p> <p> private long fib(long n)<br /> {<br /> if (n < 2)<br /> return (1);<br /> else<br /> return (fib(n - 2) + fib(n - 1));<br /> }</p> <p> public double FibTest()<br /> {<br /> return (double)fib(30);<br /> }<br /> }<br />  

3.自动测试类

//filename:AutoTestClass.java<br /> package my.test;<br /> import java.lang.reflect.Method;<br /> public class AutoTestClass<br /> {<br /> public void AutoTest(String itemname)<br /> {<br /> int test_count=10;<br /> double test_time=0.0;<br /> int run_count=0;<br /> Double ret;<br /> StopWatch sw=new StopWatch();<br /> WorkClass wc=new WorkClass();</p> <p> try<br /> {<br /> Class myclass = Class.forName("my.test.WorkClass");<br /> Method mytest_fun = myclass.getMethod(itemname);<br /> for(run_count=0;run_count<test_count;run_count++)<br /> {<br /> ret=0.0;<br /> sw.start();<br /> ret=(Double)mytest_fun.invoke(wc,null);</p> <p> if(ret>0)sw.stop();<br /> else sw.stop();</p> <p> test_time+=sw.getElapsedTime();<br /> }<br /> }catch (Throwable e)<br /> {<br /> System.err.println(e);<br /> }</p> <p> String outstr="work cost average time(10)="+test_time/test_count;<br /> System.out.println(outstr);<br /> }<br /> }<br />  

4.最后是主程序类

//filename：MainClass.java<br /> package my.test;<br /> public class MainClass {<br /> /**<br /> * @param args<br /> */<br /> public static void main(String[] args)<br /> {<br /> AutoTestClass atc=new AutoTestClass();<br /> atc.AutoTest("AddTest");<br /> atc.AutoTest("FibTest");<br /> atc.AutoTest("MulTest");<br /> atc.AutoTest("DivTest");</p> <p> }<br /> }<br />