001/**
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v1.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014package ch.qos.logback.core.helpers;
015
016import org.junit.Test;
017
018import java.util.Arrays;
019import java.util.List;
020
021import static org.junit.Assert.assertEquals;
022
023public class CyclicBufferTest {
024
025    void assertSize(CyclicBuffer<String> cb, int size) {
026        assertEquals(size, cb.length());
027    }
028
029    @Test
030    public void smoke() {
031        CyclicBuffer<String> cb = new CyclicBuffer<String>(2);
032        assertSize(cb, 0);
033        cb.add("zero");
034        assertSize(cb, 1);
035        cb.add("one");
036        assertSize(cb, 2);
037        cb.add("two");
038        assertSize(cb, 2);
039        assertEquals("one", cb.get());
040        assertSize(cb, 1);
041        assertEquals("two", cb.get());
042        assertSize(cb, 0);
043    }
044
045    @Test
046    public void cloning() {
047        CyclicBuffer<String> cb = new CyclicBuffer<String>(2);
048        cb.add("zero");
049        cb.add("one");
050
051        CyclicBuffer<String> clone = new CyclicBuffer<String>(cb);
052        assertSize(clone, 2);
053        cb.clear();
054        assertSize(cb, 0);
055
056        List<String> witness = Arrays.asList("zero", "one");
057        assertEquals(witness, clone.asList());
058
059    }
060}