public function testGetAppenderExists()
 {
     $hierarchy = new LoggerHierarchy();
     $appender = new LoggerAppenderStd();
     $hierarchy->setAppender('appender', $appender);
     $this->assertEquals($appender, $hierarchy->getAppender('appender'));
     $this->assertEquals(array('appender' => $appender), $hierarchy->getAppenderMap());
 }