/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.avro.ipc.stats;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
public class TestStopwatch {
@Test
public void testNormal() {
FakeTicks f = new FakeTicks();
Stopwatch s = new Stopwatch(f);
f.passTime(10);
s.start();
f.passTime(20);
assertEquals(20, s.elapsedNanos());
f.passTime(40);
s.stop();
f.passTime(80);
assertEquals(60, s.elapsedNanos());
}
@Test(expected=IllegalStateException.class)
public void testNotStarted1() {
FakeTicks f = new FakeTicks();
Stopwatch s = new Stopwatch(f);
s.elapsedNanos();
}
@Test(expected=IllegalStateException.class)
public void testNotStarted2() {
FakeTicks f = new FakeTicks();
Stopwatch s = new Stopwatch(f);
s.stop();
}
@Test(expected=IllegalStateException.class)
public void testTwiceStarted() {
FakeTicks f = new FakeTicks();
Stopwatch s = new Stopwatch(f);
s.start();
s.start();
}
@Test(expected=IllegalStateException.class)
public void testTwiceStopped() {
FakeTicks f = new FakeTicks();
Stopwatch s = new Stopwatch(f);
s.start();
s.stop();
s.stop();
}
@Test
public void testSystemStopwatch() {
Stopwatch s = new Stopwatch(Stopwatch.SYSTEM_TICKS);
s.start();
s.stop();
assertTrue(s.elapsedNanos() >= 0);
}
}