/** * Copyright 2014 Comcast Cable Communications Management, LLC * * 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 com.comcast.viper.flume2storm.utility.circular; import org.junit.Assert; import org.junit.Test; /** * Tests {@link CircularList} */ public class CircularListTest { protected void testCircularList(final CircularList<Integer> list) { Assert.assertNull(list.getNext()); Assert.assertTrue(list.isEmpty()); Assert.assertEquals(0, list.size()); Assert.assertNull(list.getNext()); Assert.assertTrue(list.isEmpty()); Assert.assertTrue(list.add(1)); Assert.assertFalse(list.isEmpty()); Assert.assertEquals(1, list.size()); Assert.assertEquals(Integer.valueOf(1), list.getNext()); Assert.assertEquals(Integer.valueOf(1), list.getNext()); Assert.assertEquals(Integer.valueOf(1), list.getNext()); Assert.assertTrue(list.add(2)); Assert.assertFalse(list.isEmpty()); Assert.assertEquals(2, list.size()); Assert.assertEquals(Integer.valueOf(1), list.getNext()); Assert.assertEquals(Integer.valueOf(2), list.getNext()); Assert.assertEquals(Integer.valueOf(1), list.getNext()); Assert.assertEquals(Integer.valueOf(2), list.getNext()); Assert.assertEquals(Integer.valueOf(1), list.getNext()); Assert.assertTrue(list.add(3)); Assert.assertFalse(list.isEmpty()); Assert.assertEquals(3, list.size()); Assert.assertEquals(Integer.valueOf(2), list.getNext()); Assert.assertEquals(Integer.valueOf(3), list.getNext()); Assert.assertEquals(Integer.valueOf(1), list.getNext()); Assert.assertEquals(Integer.valueOf(2), list.getNext()); Assert.assertEquals(Integer.valueOf(3), list.getNext()); Assert.assertTrue(list.remove(2)); Assert.assertFalse(list.isEmpty()); Assert.assertEquals(2, list.size()); Assert.assertEquals(Integer.valueOf(1), list.getNext()); Assert.assertEquals(Integer.valueOf(3), list.getNext()); Assert.assertTrue(list.remove(1)); Assert.assertFalse(list.isEmpty()); Assert.assertEquals(1, list.size()); Assert.assertTrue(list.remove(3)); Assert.assertTrue(list.isEmpty()); Assert.assertEquals(0, list.size()); Assert.assertNull(list.getNext()); Assert.assertNull(list.getNext()); } /** * Test the {@link ReadWriteCircularList} implementation */ @Test public void testIt() { testCircularList(new ReadWriteCircularList<Integer>()); } }