testsleepcommand.java

著名的uncle Bob的Agile software development的代码

import junit.framework.*;
import junit.swingui.TestRunner;

public class TestSleepCommand extends TestCase
{
  public static void main(String[] args)
  {
    TestRunner.main(new String[]{"TestSleepCommand"});
  }

  public TestSleepCommand(String name)
  {
    super(name);
  }

  private boolean commandExecuted = false;

  public void testSleep() throws Exception
  {
    Command wakeup = new Command()
    {
      public void execute() {commandExecuted = true;}
    };
    ActiveObjectEngine e = new ActiveObjectEngine();
    SleepCommand c = new SleepCommand(1000,e,wakeup);
    e.addCommand(c);
    long start = System.currentTimeMillis();
    e.run();
    long stop = System.currentTimeMillis();
    long sleepTime = (stop-start);
    assert("SleepTime " + sleepTime + " expected > 1000", sleepTime > 1000);
    assert("SleepTime " + sleepTime + " expected < 1100", sleepTime < 1100);
    assert("Command Executed", commandExecuted);
  }
}