import org.apache.log4j.helpers.FileWatchdog; //导入依赖的package包/类
@Test
public void testConfigDirLog4jConfig() throws IOException {
  RuntimeInfo runtimeInfo = Mockito.mock(RuntimeInfo.class);
  File configDir = new File("target", UUID.randomUUID().toString());
  Assert.assertTrue(configDir.mkdirs());
  InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream("log4j.properties");
  OutputStream os = new FileOutputStream(new File(configDir, "log4j.properties"));
  IOUtils.copy(is, os);
  is.close();
  os.close();
  Mockito.when(runtimeInfo.getConfigDir()).thenReturn(configDir.getAbsolutePath());
  Mockito.when(runtimeInfo.getLog4jPropertiesFileName()).thenReturn("log4j.properties");
  new LogConfigurator(runtimeInfo).configure();
  Mockito.verify(runtimeInfo, Mockito.times(1)).getConfigDir();
  boolean foundFileWatcher = false;
  for (Thread thread : Thread.getAllStackTraces().keySet()) {
    foundFileWatcher |= (thread instanceof FileWatchdog);
  }
  Assert.assertTrue(foundFileWatcher);
  Mockito.verify(runtimeInfo, Mockito.times(1)).setAttribute(Mockito.eq(RuntimeInfo.LOG4J_CONFIGURATION_URL_ATTR),
                                                             Mockito.any());
}
 

import org.apache.log4j.helpers.FileWatchdog; //导入依赖的package包/类
/**
 * 获取配置信息
 */
@Override
public void setConfiguration(Configuration cfg)
		throws ConfigurationException {
	String config = cfg.get("config");
	long watch = cfg.getLong("watch");
	this.logName = cfg.get("log-name");
	if (watch == 0)
		watch = FileWatchdog.DEFAULT_DELAY;
	if ((config != null) && (!config.trim().equals(""))) {
		DOMConfigurator.configureAndWatch(config, watch);
	}
	setLevel(cfg.get("priority"));
}
 

import org.apache.log4j.helpers.FileWatchdog; //导入依赖的package包/类
@After
public void cleanUp() throws Exception {
  System.getProperties().remove("log4j.configuration");
  System.getProperties().remove("log4j.defaultInitOverride");
  for (Thread thread : Thread.getAllStackTraces().keySet()) {
    if (thread instanceof FileWatchdog) {
      Field interrupted = ((Class)thread.getClass().getGenericSuperclass()).getDeclaredField("interrupted");
      interrupted.setAccessible(true);
      interrupted.set(thread, true);
      thread.interrupt();
    }
  }
}
 

import org.apache.log4j.helpers.FileWatchdog; //导入依赖的package包/类
@Test
public void testClasspathLog4jConfig() {
  RuntimeInfo runtimeInfo = Mockito.mock(RuntimeInfo.class);
  File configDir = new File("target", UUID.randomUUID().toString());
  Assert.assertTrue(configDir.mkdirs());
  Mockito.when(runtimeInfo.getConfigDir()).thenReturn(configDir.getAbsolutePath());
  Mockito.when(runtimeInfo.getLog4jPropertiesFileName()).thenReturn("log4j.properties");
  new LogConfigurator(runtimeInfo).configure();
  Mockito.verify(runtimeInfo, Mockito.times(1)).getConfigDir();
  for (Thread thread : Thread.getAllStackTraces().keySet()) {
   Assert.assertFalse(thread instanceof FileWatchdog);
  }
  Mockito.verify(runtimeInfo, Mockito.times(1)).setAttribute(Mockito.eq(RuntimeInfo.LOG4J_CONFIGURATION_URL_ATTR),
                                                             Mockito.any());
}
 

import org.apache.log4j.helpers.FileWatchdog; //导入依赖的package包/类
/**
   Like {@link #configureAndWatch(String, long)} except that the
   default delay as defined by {@link FileWatchdog#DEFAULT_DELAY} is
   used. 

   @param configFilename A log4j configuration file in XML format.

*/
static
public
void configureAndWatch(String configFilename) {
  configureAndWatch(configFilename, FileWatchdog.DEFAULT_DELAY);
}
 

import org.apache.log4j.helpers.FileWatchdog; //导入依赖的package包/类
/**
   Like {@link #configureAndWatch(String, long)} except that the
   default delay as defined by {@link FileWatchdog#DEFAULT_DELAY} is
   used.

   @param configFilename A file in key=value format.

*/
static
public
void configureAndWatch(String configFilename) {
  configureAndWatch(configFilename, FileWatchdog.DEFAULT_DELAY);
}