Java Logger.getLoggerの例

コード例 #1

ファイル: CategoryLoggerTest.java プロジェクト: dmlloyd/log4j-jboss-logmanager

/**
 * Date: 01.12.2011
 *
 * @author <a href="mailto:[email protected]">James R. Perkins</a>
 */
public class CategoryLoggerTest {
  private static final String MESSAGE = "This is a test log message.";
  private static final String JBL_MESSAGE = "This is a test from JBL";
  private static final String JUL_MESSAGE = "This is a test from JUL";
  private static final String ROOT_LOGGER_MSG = "Message from root logger";
  private final Logger log4jLogger = Logger.getLogger(CategoryLoggerTest.class);
  private final Logger root = Logger.getRootLogger();

  @BeforeClass
  public static void setUp() {
    // Uncomment to see output
    BasicConfigurator.configure();
  }

  @Before
  public void clearAppenders() {
    log4jLogger.removeAllAppenders();
    root.removeAllAppenders();
  }

  @Test
  public void appenderTest() {
    final CountingAppender appender = new CountingAppender();
    final StringAppender stringAppender = new StringAppender();

    log4jLogger.addAppender(appender);
    log4jLogger.addAppender(stringAppender);
    log4jLogger.info(MESSAGE);

    org.jboss.logging.Logger.getLogger(getClass()).info(JBL_MESSAGE);
    java.util.logging.Logger.getLogger(getClass().getName()).info(JUL_MESSAGE);

    final String stringFormat = "This is a %s format test.";
    org.jboss.logging.Logger.getLogger(getClass()).infof(stringFormat, "string");

    final String msgFormat = "This is a {} format test.";
    org.jboss.logging.Logger.getLogger(getClass()).infof(stringFormat, "message");

    assertEquals(5, appender.counter);
    assertEquals(5, stringAppender.messages.size());
    assertEquals(MESSAGE, stringAppender.messages.get(0));
    assertEquals(JBL_MESSAGE, stringAppender.messages.get(1));
    assertEquals(JUL_MESSAGE, stringAppender.messages.get(2));
    assertFalse(stringFormat.equals(stringAppender.messages.get(3)));
    assertFalse(msgFormat.equals(stringAppender.messages.get(4)));
  }

  @Test
  public void duplicateAppenderTest() {
    final CountingAppender appender = new CountingAppender();
    final StringAppender stringAppender = new StringAppender();

    root.addAppender(appender);
    root.addAppender(stringAppender);
    root.info(ROOT_LOGGER_MSG);

    log4jLogger.addAppender(stringAppender);
    log4jLogger.info(MESSAGE);

    org.jboss.logging.Logger.getLogger(getClass()).info(JBL_MESSAGE);

    assertEquals(3, appender.counter);
    assertEquals(5, stringAppender.messages.size());
    assertEquals(ROOT_LOGGER_MSG, stringAppender.messages.get(0));
    assertEquals(MESSAGE, stringAppender.messages.get(1));
    assertEquals(MESSAGE, stringAppender.messages.get(2));
    assertEquals(JBL_MESSAGE, stringAppender.messages.get(3));
    assertEquals(JBL_MESSAGE, stringAppender.messages.get(4));
  }

  @Test
  public void rootAppenderTest() {
    final CountingAppender appender = new CountingAppender();
    final StringAppender stringAppender = new StringAppender();

    root.addAppender(appender);
    root.addAppender(stringAppender);
    root.info(ROOT_LOGGER_MSG);

    final String msg = JBL_MESSAGE + " root logger";
    org.jboss.logmanager.Logger.getLogger(JBossLogManagerFacade.JBL_ROOT_NAME).info(msg);
    org.jboss.logging.Logger.getLogger(JBossLogManagerFacade.JBL_ROOT_NAME).info(msg);

    assertEquals(3, appender.counter);
    assertEquals(3, stringAppender.messages.size());
    assertEquals(ROOT_LOGGER_MSG, stringAppender.messages.get(0));
    assertEquals(msg, stringAppender.messages.get(1));
    assertEquals(msg, stringAppender.messages.get(2));
  }

  @Test
  public void levelChangeTest() {
    final CountingAppender appender = new CountingAppender();
    log4jLogger.addAppender(appender);
    log4jLogger.setLevel(Level.INFO);

    log4jLogger.error(MESSAGE);
    log4jLogger.fatal(MESSAGE);
    log4jLogger.warn(MESSAGE);
    log4jLogger.info(MESSAGE);
    log4jLogger.debug(MESSAGE);
    log4jLogger.trace(MESSAGE);

    assertEquals(4, appender.counter);
  }

  private static class CountingAppender extends AbstractAppender {

    int counter;

    CountingAppender() {
      super("CountingAppender");
      counter = 0;
    }

    public void close() {}

    public void append(LoggingEvent event) {
      counter++;
    }

    public boolean requiresLayout() {
      return true;
    }
  }

  private static class StringAppender extends AbstractAppender {

    private final List<String> messages = new ArrayList<String>();

    StringAppender() {
      super("StringAppender");
    }

    public void close() {}

    public void append(LoggingEvent event) {
      messages.add(event.getRenderedMessage());
    }

    public boolean requiresLayout() {
      return true;
    }
  }
}