invocationtest.java

Java开发最新的日志记录工具slf4j的源码

/* 
 * Copyright (c) 2004-2007 QOS.CH
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 * to whom  the Software is furnished  to do so, provided  that the above
 * copyright notice(s) and this permission notice appear in all copies of
 * the  Software and  that both  the above  copyright notice(s)  and this
 * permission notice appear in supporting documentation.
 * 
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
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package org.slf4j;

import java.io.PrintStream;

import junit.framework.TestCase;


/**
 * Test whether invoking the SLF4J API causes problems or not.
 * 
 * @author Ceki Gulcu
 *
 */
public class InvocationTest extends TestCase {

  PrintStream old = System.err;
  
  public InvocationTest (String arg0) {
    super(arg0);
  }

  protected void setUp() throws Exception {
    super.setUp();
    System.setErr(new SilentPrintStream(old));
  }

  protected void tearDown() throws Exception {
    super.tearDown();
    System.setErr(old);
  }
  
  public void test1() {
    Logger logger = LoggerFactory.getLogger("test1");
    logger.debug("Hello world.");
  }
  
  public void test2() {
    Integer i1 = new Integer(1);
    Integer i2 = new Integer(2);
    Integer i3 = new Integer(3);
    Exception e = new Exception("This is a test exception.");
    Logger logger = LoggerFactory.getLogger("test2");
    
    logger.debug("Hello world 1.");
    logger.debug("Hello world {}", i1);
    logger.debug("val={} val={}", i1, i2);
    logger.debug("val={} val={} val={}", new Object[]{i1, i2, i3});
    
    logger.debug("Hello world 2", e);
    logger.info("Hello world 2.");
 
    
    logger.warn("Hello world 3.");
    logger.warn("Hello world 3", e);
 
  
    logger.error("Hello world 4.");
    logger.error("Hello world {}", new Integer(3)); 
    logger.error("Hello world 4.", e);
  }
  
  // http://bugzilla.slf4j.org/show_bug.cgi?id=78
  public void testNullParameter_BUG78() {
    Logger logger = LoggerFactory.getLogger("testNullParameter_BUG78");
    String[] parameters = null;
    String msg = "hello {}";
    logger.info(msg, parameters);
  }
  
  public void testNull() {
    Logger logger = LoggerFactory.getLogger("testNull");
    logger.debug(null);
    logger.info(null);
    logger.warn(null);
    logger.error(null);
    
    Exception e = new Exception("This is a test exception.");
    logger.debug(null, e);
    logger.info(null, e);
    logger.warn(null, e);
    logger.error(null, e);
  }
  
  public void testMarker() {
    Logger logger = LoggerFactory.getLogger("testMarker");
    Marker blue = MarkerFactory.getMarker("BLUE");
    logger.debug(blue, "hello");
    logger.info(blue, "hello");
    logger.warn(blue, "hello");
    logger.error(blue, "hello");
    
    logger.debug(blue, "hello {}", "world");
    logger.info(blue, "hello {}", "world");
    logger.warn(blue, "hello {}", "world");
    logger.error(blue, "hello {}", "world");

    logger.debug(blue, "hello {} and {} ", "world", "universe");
    logger.info(blue, "hello {} and {} ", "world", "universe");
    logger.warn(blue, "hello {} and {} ", "world", "universe");
    logger.error(blue, "hello {} and {} ", "world", "universe");
  }
  
  public void testMDC() {
    MDC.put("k", "v");
    assertNull(MDC.get("k"));
    MDC.remove("k");
    assertNull(MDC.get("k"));
    MDC.clear();
  }
}