/*
Copyright 2011 Janne Jalkanen
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package com.ecyrd.speed4j;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import com.ecyrd.speed4j.StopWatch;
import com.ecyrd.speed4j.StopWatchFactory;
public class StopWatchTest
{
@Test
public void testToStringIterations() throws InterruptedException
{
StopWatchFactory swf = StopWatchFactory.getDefault();
int iterations = 100;
StopWatch sw = swf.getStopWatch("foo");
for( int i = 0; i < iterations; i++ )
{
Thread.sleep(10+ (long)(Math.random() * 10));
}
sw.stop("ok");
assertEquals("ok", sw.getTag());
assertTrue( sw.getTimeMicros() > iterations*10*1000L ); // No way this could be faster
String s = sw.toString(iterations);
assertTrue( s.contains("iterations/second"));
}
@Test
public void testSpeed() throws InterruptedException
{
StopWatchFactory swf = StopWatchFactory.getDefault();
long time = System.currentTimeMillis();
int iterations = 1200000;
StopWatch total = swf.getStopWatch();
for( int i = 0; i < iterations; i++ )
{
StopWatch sw = swf.getStopWatch("foo");
// Do nothing
sw.stop("iteration:success");
}
total.stop("total");
time = System.currentTimeMillis() - time;
// Output perf data
System.out.println("Iterations: "+iterations+", total time "+time+" ms, is "+(iterations*1000L/time)+" iterations per second");
assertTrue( "StopWatch and system count differ by more than 1 ms", Math.abs(time - total.getTimeMicros()/1e3) < 1 );
}
}