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.slf4j;
026
027import static org.junit.Assert.assertEquals;
028
029import org.junit.Before;
030import org.junit.Test;
031
032public class NDCTest {
033
034    @Before
035    public void setUp() throws Exception {
036        MDC.clear();
037    }
038
039    @Test
040    public void testEmpty() {
041        assertEquals("", NDC.pop());
042    }
043
044    @Test
045    public void testSmoke() {
046        NDC.push("a");
047        String result = NDC.pop();
048        assertEquals("a", result);
049    }
050
051    @Test
052    public void testSmoke2() {
053        NDC.push("a");
054        NDC.push("b");
055        String result1 = NDC.pop();
056        String result0 = NDC.pop();
057        assertEquals("b", result1);
058        assertEquals("a", result0);
059    }
060}