/**
* Copyright 2013 Netflix, Inc.
* <p/>
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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.netflix.servo.monitor;
import org.testng.annotations.Test;
import java.util.concurrent.TimeUnit;
import static org.testng.Assert.assertEquals;
public class BasicTimerTest extends AbstractMonitorTest<BasicTimer> {
public BasicTimer newInstance(String name) {
return new BasicTimer(MonitorConfig.builder(name).build());
}
@Test
public void testGetValue() throws Exception {
BasicTimer c = newInstance("foo");
assertEquals(c.getValue().longValue(), 0L);
assertEquals(c.getTotalTime().longValue(), 0L);
assertEquals(c.getCount().longValue(), 0L);
assertEquals(c.getMax().longValue(), 0L);
c.record(42, TimeUnit.MILLISECONDS);
assertEquals(c.getValue().longValue(), 42L);
assertEquals(c.getTotalTime().longValue(), 42L);
assertEquals(c.getCount().longValue(), 1L);
assertEquals(c.getMax().longValue(), 42L);
c.record(21, TimeUnit.MILLISECONDS);
assertEquals(c.getValue().longValue(), 31L);
assertEquals(c.getTotalTime().longValue(), 63L);
assertEquals(c.getCount().longValue(), 2L);
assertEquals(c.getMax().longValue(), 42L);
c.record(84, TimeUnit.MILLISECONDS);
assertEquals(c.getValue().longValue(), 49L);
assertEquals(c.getTotalTime().longValue(), 147L);
assertEquals(c.getCount().longValue(), 3L);
assertEquals(c.getMax().longValue(), 84L);
assertEquals(c.getValue().longValue(), 49L);
assertEquals(c.getTotalTime().longValue(), 147L);
assertEquals(c.getCount().longValue(), 3L);
assertEquals(c.getMax().longValue(), 84L);
}
@Test
public void testRecord0() throws Exception {
BasicTimer c = newInstance("foo");
assertEquals(c.getCount().longValue(), 0L);
c.record(42, TimeUnit.MILLISECONDS);
assertEquals(c.getCount().longValue(), 1L);
// Explicit 0 should be counted
c.record(0, TimeUnit.MILLISECONDS);
assertEquals(c.getCount().longValue(), 2L);
// Negative values should be ignored
c.record(-1, TimeUnit.MILLISECONDS);
assertEquals(c.getCount().longValue(), 2L);
}
@Test
public void testFractional() throws Exception {
BasicTimer timer = newInstance("foo");
timer.record(1000, TimeUnit.NANOSECONDS);
assertEquals(timer.getTotalTime(), 0.001);
assertEquals(timer.getMax(), 0.001);
}
}