| /* |
| * Copyright 2016-present Open Networking Foundation |
| * |
| * 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 org.onosproject.core.impl; |
| |
| import java.util.concurrent.atomic.AtomicLong; |
| import java.util.function.Supplier; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.onosproject.core.HybridLogicalTime; |
| |
| /** |
| * Unit tests for {@link HybridLogicalClockManager}. |
| */ |
| public class HybridLogicalClockManagerTest { |
| |
| @Test |
| public void testLocalEvents() { |
| AtomicLong ticker = new AtomicLong(); |
| Supplier<Long> ptSource = ticker::get; |
| HybridLogicalClockManager clockManager = new HybridLogicalClockManager(); |
| clockManager.physicalTimeSource = ptSource; |
| |
| HybridLogicalTime time1 = clockManager.timeNow(); |
| Assert.assertEquals(0, time1.logicalTime()); |
| Assert.assertEquals(1, time1.logicalCounter()); |
| |
| HybridLogicalTime time2 = clockManager.timeNow(); |
| Assert.assertEquals(0, time2.logicalTime()); |
| Assert.assertEquals(2, time2.logicalCounter()); |
| |
| ticker.incrementAndGet(); |
| |
| HybridLogicalTime time3 = clockManager.timeNow(); |
| Assert.assertEquals(1, time3.logicalTime()); |
| Assert.assertEquals(0, time3.logicalCounter()); |
| |
| HybridLogicalTime time4 = clockManager.timeNow(); |
| Assert.assertEquals(1, time4.logicalTime()); |
| Assert.assertEquals(1, time4.logicalCounter()); |
| } |
| |
| @Test |
| public void testReceiveEvents() { |
| AtomicLong ticker = new AtomicLong(1); |
| Supplier<Long> ptSource = ticker::get; |
| HybridLogicalClockManager clockManager = new HybridLogicalClockManager(); |
| clockManager.physicalTimeSource = ptSource; |
| |
| HybridLogicalTime time1 = clockManager.timeNow(); |
| Assert.assertEquals(1, time1.logicalTime()); |
| Assert.assertEquals(0, time1.logicalCounter()); |
| |
| HybridLogicalTime eventTime1 = new HybridLogicalTime(1, 0); |
| clockManager.recordEventTime(eventTime1); |
| |
| Assert.assertEquals(1, clockManager.logicalTime()); |
| Assert.assertEquals(1, clockManager.logicalCounter()); |
| |
| HybridLogicalTime eventTime2 = new HybridLogicalTime(2, 0); |
| clockManager.recordEventTime(eventTime2); |
| |
| Assert.assertEquals(2, clockManager.logicalTime()); |
| Assert.assertEquals(1, clockManager.logicalCounter()); |
| |
| HybridLogicalTime eventTime3 = new HybridLogicalTime(2, 2); |
| clockManager.recordEventTime(eventTime3); |
| |
| Assert.assertEquals(2, clockManager.logicalTime()); |
| Assert.assertEquals(3, clockManager.logicalCounter()); |
| |
| HybridLogicalTime eventTime4 = new HybridLogicalTime(2, 1); |
| clockManager.recordEventTime(eventTime4); |
| |
| Assert.assertEquals(2, clockManager.logicalTime()); |
| Assert.assertEquals(4, clockManager.logicalCounter()); |
| |
| ticker.set(4); |
| |
| HybridLogicalTime eventTime5 = new HybridLogicalTime(3, 0); |
| clockManager.recordEventTime(eventTime5); |
| |
| Assert.assertEquals(4, clockManager.logicalTime()); |
| Assert.assertEquals(0, clockManager.logicalCounter()); |
| } |
| } |