slf4j-ext/src/test/java/org/slf4j/NDCTest.java

/**
 * Copyright (c) 2004-2011 QOS.ch
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
package org.slf4j;

import static org.junit.Assert.assertEquals;

import org.junit.Before;
import org.junit.Test;

public class NDCTest {

    @Before
    public void setUp() throws Exception {
        MDC.clear();
    }

    @Test
    public void testEmpty() {
        assertEquals("", NDC.pop());
    }

    @Test
    public void testSmoke() {
        NDC.push("a");
        String result = NDC.pop();
        assertEquals("a", result);
    }

    @Test
    public void testSmoke2() {
        NDC.push("a");
        NDC.push("b");
        String result1 = NDC.pop();
        String result0 = NDC.pop();
        assertEquals("b", result1);
        assertEquals("a", result0);
    }
}