001/**
002 * Copyright (c) 2004-2011 QOS.ch
003 * All rights reserved.
004 *
005 * Permission is hereby granted, free  of charge, to any person obtaining
006 * a  copy  of this  software  and  associated  documentation files  (the
007 * "Software"), to  deal in  the Software without  restriction, including
008 * without limitation  the rights to  use, copy, modify,  merge, publish,
009 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
010 * permit persons to whom the Software  is furnished to do so, subject to
011 * the following conditions:
012 *
013 * The  above  copyright  notice  and  this permission  notice  shall  be
014 * included in all copies or substantial portions of the Software.
015 *
016 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
017 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
018 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
021 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
023 *
024 */
025package org.apache.log4j.test;
026
027import static org.junit.Assert.assertEquals;
028
029import org.junit.After;
030import org.junit.Before;
031import org.junit.Test;
032
033import org.apache.log4j.NDC;
034
035/**
036 * @author Ceki Gülcü
037 */
038public class NDCTest {
039
040    @Before
041    public void setUp() {
042        assertEquals(0, NDC.getDepth());
043    }
044
045    @After
046    public void tearDown() {
047        NDC.clear();
048    }
049
050    @Test
051    public void testSmoke() {
052        NDC.push("a");
053        String back = NDC.pop();
054        assertEquals("a", back);
055    }
056
057    @Test
058    public void testPop() {
059        NDC.push("peek");
060        String back = NDC.peek();
061        assertEquals("peek", back);
062    }
063
064    @Test
065    public void testClear() {
066        NDC.push("clear");
067        NDC.clear();
068        assertEquals(0, NDC.getDepth());
069    }
070
071}