    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.assertNull;
    028
    029import java.io.PrintStream;
    030
    031import org.junit.After;
    032import org.junit.Before;
    033import org.junit.Test;
    034
    035/**
    036 * Test whether invoking the SLF4J API causes problems or not.
    037 *
    038 * @author Ceki Gulcu
    039 *
    040 */
    041public class InvocationTest {
    042
    043    PrintStream old = System.err;
    044
    045    @Before
    046    public void setUp() throws Exception {
    047        System.setErr(new SilentPrintStream(old));
    048    }
    049
    050    @After
    051    public void tearDown() throws Exception {
    052
    053        System.setErr(old);
    054    }
    055
    056    @Test
    057    public void test1() {
    058        Logger logger = LoggerFactory.getLogger("test1");
    059        logger.debug("Hello world.");
    060    }
    061
    062    @Test
    063    public void test2() {
    064        Integer i1 = new Integer(1);
    065        Integer i2 = new Integer(2);
    066        Integer i3 = new Integer(3);
    067        Exception e = new Exception("This is a test exception.");
    068        Logger logger = LoggerFactory.getLogger("test2");
    069
    070        logger.debug("Hello world 1.");
    071        logger.debug("Hello world {}", i1);
    072        logger.debug("val={} val={}", i1, i2);
    073        logger.debug("val={} val={} val={}", new Object[] { i1, i2, i3 });
    074
    075        logger.debug("Hello world 2", e);
    076        logger.info("Hello world 2.");
    077
    078        logger.warn("Hello world 3.");
    079        logger.warn("Hello world 3", e);
    080
    081        logger.error("Hello world 4.");
    082        logger.error("Hello world {}", new Integer(3));
    083        logger.error("Hello world 4.", e);
    084    }
    085
    086    // http://jira.qos.ch/browse/SLF4J-69
    087    // formerly http://bugzilla.slf4j.org/show_bug.cgi?id=78
    088    @Test
    089    public void testNullParameter_BUG78() {
    090        Logger logger = LoggerFactory.getLogger("testNullParameter_BUG78");
    091        String[] parameters = null;
    092        String msg = "hello {}";
    093        logger.info(msg, (Object[]) parameters);
    094    }
    095
    096    @Test
    097    public void testNull() {
    098        Logger logger = LoggerFactory.getLogger("testNull");
    099        logger.debug(null);
    100        logger.info(null);
    101        logger.warn(null);
    102        logger.error(null);
    103
    104        Exception e = new Exception("This is a test exception.");
    105        logger.debug(null, e);
    106        logger.info(null, e);
    107        logger.warn(null, e);
    108        logger.error(null, e);
    109    }
    110
    111    @Test
    112    public void testMarker() {
    113        Logger logger = LoggerFactory.getLogger("testMarker");
    114        Marker blue = MarkerFactory.getMarker("BLUE");
    115        logger.debug(blue, "hello");
    116        logger.info(blue, "hello");
    117        logger.warn(blue, "hello");
    118        logger.error(blue, "hello");
    119
    120        logger.debug(blue, "hello {}", "world");
    121        logger.info(blue, "hello {}", "world");
    122        logger.warn(blue, "hello {}", "world");
    123        logger.error(blue, "hello {}", "world");
    124
    125        logger.debug(blue, "hello {} and {} ", "world", "universe");
    126        logger.info(blue, "hello {} and {} ", "world", "universe");
    127        logger.warn(blue, "hello {} and {} ", "world", "universe");
    128        logger.error(blue, "hello {} and {} ", "world", "universe");
    129    }
    130
    131    @Test
    132    public void testMDC() {
    133        MDC.put("k", "v");
    134        assertNull(MDC.get("k"));
    135        MDC.remove("k");
    136        assertNull(MDC.get("k"));
    137        MDC.clear();
    138    }
    139}