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 java.io.PrintStream;
028import java.util.List;
029import java.util.Random;
030
031import org.junit.After;
032import org.junit.Before;
033import org.junit.Test;
034import static org.junit.Assert.assertTrue;
035
036public class MultiBindingAssertionTest {
037
038    StringPrintStream sps = new StringPrintStream(System.err);
039    PrintStream old = System.err;
040    int diff = 1024 + new Random().nextInt(10000);
041
042    @Before
043    public void setUp() throws Exception {
044        System.setErr(sps);
045    }
046
047    @After
048    public void tearDown() throws Exception {
049        System.setErr(old);
050    }
051
052    @Test
053    public void test() throws Exception {
054        Logger logger = LoggerFactory.getLogger(this.getClass());
055        String msg = "hello world " + diff;
056        logger.info(msg);
057        List<String> list = sps.stringList;
058        assertMsgContains(list, 0, "Class path contains multiple SLF4J providers.");
059        assertMsgContains(list, 1, "Found provider");
060        assertMsgContains(list, 2, "Found provider");
061        assertMsgContains(list, 3, "See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.");
062        assertMsgContains(list, 4, "Actual provider is of type [");
063    }
064
065    void assertMsgContains(List<String> strList, int index, String msg) {
066        assertTrue(((String) strList.get(index)).contains(msg));
067    }
068}