| /* |
| * 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.kafka.common.utils; |
| |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| public class TimerTest { |
| |
| private final MockTime time = new MockTime(); |
| |
| @Test |
| public void testTimerUpdate() { |
| Timer timer = time.timer(500); |
| assertEquals(500, timer.remainingMs()); |
| assertEquals(0, timer.elapsedMs()); |
| |
| time.sleep(100); |
| timer.update(); |
| |
| assertEquals(400, timer.remainingMs()); |
| assertEquals(100, timer.elapsedMs()); |
| |
| time.sleep(400); |
| timer.update(time.milliseconds()); |
| |
| assertEquals(0, timer.remainingMs()); |
| assertEquals(500, timer.elapsedMs()); |
| assertTrue(timer.isExpired()); |
| |
| // Going over the expiration is fine and the elapsed time can exceed |
| // the initial timeout. However, remaining time should be stuck at 0. |
| time.sleep(200); |
| timer.update(time.milliseconds()); |
| assertTrue(timer.isExpired()); |
| assertEquals(0, timer.remainingMs()); |
| assertEquals(700, timer.elapsedMs()); |
| } |
| |
| @Test |
| public void testTimerUpdateAndReset() { |
| Timer timer = time.timer(500); |
| timer.sleep(200); |
| assertEquals(300, timer.remainingMs()); |
| assertEquals(200, timer.elapsedMs()); |
| |
| timer.updateAndReset(400); |
| assertEquals(400, timer.remainingMs()); |
| assertEquals(0, timer.elapsedMs()); |
| |
| timer.sleep(400); |
| assertTrue(timer.isExpired()); |
| |
| timer.updateAndReset(200); |
| assertEquals(200, timer.remainingMs()); |
| assertEquals(0, timer.elapsedMs()); |
| assertFalse(timer.isExpired()); |
| } |
| |
| @Test |
| public void testTimerResetUsesCurrentTime() { |
| Timer timer = time.timer(500); |
| timer.sleep(200); |
| assertEquals(300, timer.remainingMs()); |
| assertEquals(200, timer.elapsedMs()); |
| |
| time.sleep(300); |
| timer.reset(500); |
| assertEquals(500, timer.remainingMs()); |
| |
| timer.update(); |
| assertEquals(200, timer.remainingMs()); |
| } |
| |
| @Test |
| public void testTimeoutOverflow() { |
| Timer timer = time.timer(Long.MAX_VALUE); |
| assertEquals(Long.MAX_VALUE - timer.currentTimeMs(), timer.remainingMs()); |
| assertEquals(0, timer.elapsedMs()); |
| } |
| |
| @Test |
| public void testNonMonotonicUpdate() { |
| Timer timer = time.timer(100); |
| long currentTimeMs = timer.currentTimeMs(); |
| |
| timer.update(currentTimeMs - 1); |
| assertEquals(currentTimeMs, timer.currentTimeMs()); |
| |
| assertEquals(100, timer.remainingMs()); |
| assertEquals(0, timer.elapsedMs()); |
| } |
| |
| @Test |
| public void testTimerSleep() { |
| Timer timer = time.timer(500); |
| long currentTimeMs = timer.currentTimeMs(); |
| |
| timer.sleep(200); |
| assertEquals(time.milliseconds(), timer.currentTimeMs()); |
| assertEquals(currentTimeMs + 200, timer.currentTimeMs()); |
| |
| timer.sleep(1000); |
| assertEquals(time.milliseconds(), timer.currentTimeMs()); |
| assertEquals(currentTimeMs + 500, timer.currentTimeMs()); |
| assertTrue(timer.isExpired()); |
| } |
| |
| } |