JUnitPerf timed load JUnit test example

For my own future reference, here is a complete example of a JUnitPerf timed load test of a JUnit test.

First the normal JUnit test case.
In this case, just write a non-trivial sized file...

import junit.framework.TestCase;
import java.io.*;
import java.lang.reflect.Array;

public class AppTest extends TestCase {
  public AppTest(String testName) { super(testName); }
  public void testApp() {
    byte[] ary = (byte[]) Array.newInstance(byte.class, 65534);
    try {
      File tmp = File.createTempFile("writeTest", ".txt");
      tmp.deleteOnExit();
      FileOutputStream os = new FileOutputStream(tmp);
      FileDescriptor fd = os.getFD();
      for(int i=0; i<1000; i++) { os.write(ary); }
      os.flush(); fd.sync();
    } catch (IOException e) { }
  }
}

Then a JUnit-compatible junitperf test suite. Run in sizes of powers of two (and 3 times each)...

import com.clarkware.junitperf.*;
import junit.framework.*;

public class AppTimedLoadTest extends TestCase {

 private static final String TEST = "testApp";

 public static Test timedNload(int n, int s, String testName) {
   boolean wait  = true;
   Test test     = new AppTest(testName);
   LoadTest load = new LoadTest(test, n); load.setEnforceTestAtomicity(false);
   Test timed    = new TimedTest(load, s * 1000, wait);
   return timed;
 }

 public static Test suite() {
   TestSuite suite = new TestSuite();
   suite.addTest(timedNload(1, 30, TEST));
   suite.addTest(timedNload(1, 30, TEST));
   suite.addTest(timedNload(1, 30, TEST));
   suite.addTest(timedNload(2, 30, TEST));
   suite.addTest(timedNload(2, 30, TEST));
   suite.addTest(timedNload(2, 30, TEST));
   suite.addTest(timedNload(4, 30, TEST));
   suite.addTest(timedNload(4, 30, TEST));
   suite.addTest(timedNload(4, 30, TEST));
   suite.addTest(timedNload(8, 30, TEST));
   suite.addTest(timedNload(8, 30, TEST));
   suite.addTest(timedNload(8, 30, TEST));
   return suite;
 }
}

The results of a mvn test run (with added spaces to see the grouping)...

-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running AppTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.295 sec
Running AppTimedLoadTest
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 2245 ms
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 2397 ms
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 2241 ms

TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 4274 ms
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 4425 ms
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 4374 ms

TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 9067 ms
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 10204 ms
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 8802 ms

TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 17439 ms
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 18558 ms
TimedTest (WAITING): LoadTest (NON-ATOMIC): ThreadedTest: testApp(AppTest): 19724 ms
Tests run: 45, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 103.782 sec
Results :
Tests run: 46, Failures: 0, Errors: 0, Skipped: 0