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* Fix issue #761: ThreadSafeDoubleCheckLocking.java: Instantiating by Reflection call will be successful if you do that firstly * Create leader election module * Create Interface of Instance and MessageManager * Create implementations with token ring algorithm * Change package structure. Create basic message system. * Implement heartbeat and heartbeat invoking message system * Implement election message handler * Add leader message handler * Add main entry point * Add comments * Update README.md * Fix checkstyle issue * Add Unit Tests * Add Unit Tests * Add bully leader selection * Change System.out to log print. Add MIT license in each file. * Add More java doc comments * Add unit test * Add unit tests
77 lines
2.8 KiB
Java
77 lines
2.8 KiB
Java
/**
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* The MIT License
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* Copyright (c) 2014-2016 Ilkka Seppälä
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* <p>
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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* <p>
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.leaderelection.ring;
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import com.iluwatar.leaderelection.AbstractInstance;
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import com.iluwatar.leaderelection.Message;
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import com.iluwatar.leaderelection.MessageType;
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import org.junit.jupiter.api.Test;
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import java.lang.reflect.Field;
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import java.util.Queue;
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import static org.junit.jupiter.api.Assertions.*;
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/**
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* RingInstance unit test.
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*/
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public class RingInstanceTest {
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@Test
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public void testOnMessage() {
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try {
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final RingInstance ringInstance = new RingInstance(null, 1, 1);
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Message ringMessage = new Message(MessageType.HEARTBEAT, "");
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ringInstance.onMessage(ringMessage);
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Class ringInstanceClass = AbstractInstance.class;
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Field messageQueueField = ringInstanceClass.getDeclaredField("messageQueue");
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messageQueueField.setAccessible(true);
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assertEquals(ringMessage, ((Queue<Message>) messageQueueField.get(ringInstance)).poll());
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} catch (IllegalAccessException | NoSuchFieldException e) {
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fail("fail to access messasge queue.");
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}
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}
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@Test
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public void testIsAlive() {
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try {
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final RingInstance ringInstance = new RingInstance(null, 1, 1);
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Class ringInstanceClass = AbstractInstance.class;
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Field aliveField = ringInstanceClass.getDeclaredField("alive");
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aliveField.setAccessible(true);
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aliveField.set(ringInstance, false);
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assertFalse(ringInstance.isAlive());
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} catch (NoSuchFieldException | IllegalAccessException e) {
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fail("Fail to access field alive.");
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}
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}
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@Test
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public void testSetAlive() {
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final RingInstance ringInstance = new RingInstance(null, 1, 1);
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ringInstance.setAlive(false);
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assertFalse(ringInstance.isAlive());
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}
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}
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