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;
026
027import static org.junit.Assert.assertEquals;
028
029import org.junit.After;
030import org.junit.Before;
031import org.junit.Test;
032
033/**
034 * @author Ceki Gülcü
035 */
036public class NDCTest {
037
038    @Before
039    public void setUp() {
040        assertEquals(0, NDC.getDepth());
041    }
042
043    @After
044    public void tearDown() {
045        NDC.clear();
046    }
047
048    @Test
049    public void testSmoke() {
050        NDC.push("a");
051        String back = NDC.pop();
052        assertEquals("a", back);
053    }
054
055    @Test
056    public void testPop() {
057        NDC.push("peek");
058        String back = NDC.peek();
059        assertEquals("peek", back);
060    }
061
062    @Test
063    public void testClear() {
064        NDC.push("clear");
065        NDC.clear();
066        assertEquals(0, NDC.getDepth());
067    }
068
069}