/**
* Copyright 2012-2014 Rafal Lewczuk <rafal.lewczuk@jitlogic.com>
*
* ZORKA is free software. You can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* ZORKA is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* ZORKA. If not, see <http://www.gnu.org/licenses/>.
*/
package com.jitlogic.zorka.core.test.perfmon;
import com.jitlogic.zorka.core.test.support.ZorkaFixture;
import com.jitlogic.zorka.core.perfmon.RateAggregate;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
import com.jitlogic.zorka.core.test.support.ZorkaTestUtil;
public class SlidingWindowUnitTest extends ZorkaFixture {
private ZorkaTestUtil testUtil;
@Before
public void setUp() {
testUtil = ZorkaTestUtil.setUp();
}
@Test
public void testQueryEmptyWindow() throws Exception {
RateAggregate wnd = new RateAggregate(100, -1);
assertEquals(-1.0, wnd.rate(), 0.0001);
}
@Test
public void testSlidingWindowWithSingleItem() throws Exception {
RateAggregate wnd = new RateAggregate(100, -1);
wnd.feed(100, 1);
assertEquals(0.0, wnd.rate(), 0.0001);
}
@Test
public void testSlidingWindowWithTwoItems() throws Exception {
RateAggregate wnd = new RateAggregate(100, -1);
wnd.feed(100, 1);
wnd.feed(150, 1);
assertEquals(50.0, wnd.rate(), 0.0001);
}
@Test
public void testWindowNotYetSlide() throws Exception {
RateAggregate wnd = new RateAggregate(100, -1);
testUtil.mockCurrentTimeMillis(0, 0, 50, 50, 100, 100, 100);
wnd.feed(100);
wnd.feed(150);
wnd.feed(200);
assertEquals(100.0, wnd.rate(), 0.0001);
}
@Test
public void testWindowSlide() throws Exception {
RateAggregate wnd = new RateAggregate(100, -1);
testUtil.mockCurrentTimeMillis(0, 0, 50, 50, 100, 100, 150);
wnd.feed(100);
wnd.feed(150);
wnd.feed(200);
assertEquals(50.0, wnd.rate(), 0.0001);
}
@Test
public void testWindowSlideOutOfHorizon() throws Exception {
RateAggregate wnd = new RateAggregate(100, -1);
testUtil.mockCurrentTimeMillis(0, 0, 50, 50, 100, 100, 1500);
wnd.feed(100);
wnd.feed(150);
wnd.feed(200);
assertEquals(-1.0, wnd.rate(), 0.0001);
}
}