Coverage Summary for Class: Log4j2TestAppender (org.umlg.sqlg.test)

 package org.umlg.sqlg.test;
 
 import org.apache.commons.lang3.tuple.Pair;
 import org.apache.logging.log4j.core.Appender;
 import org.apache.logging.log4j.core.Core;
 import org.apache.logging.log4j.core.Filter;
 import org.apache.logging.log4j.core.LogEvent;
 import org.apache.logging.log4j.core.appender.AbstractAppender;
 import org.apache.logging.log4j.core.config.plugins.Plugin;
 import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
 import org.apache.logging.log4j.core.config.plugins.PluginElement;
 import org.apache.logging.log4j.core.config.plugins.PluginFactory;
 
 import java.util.LinkedList;
 
 @Plugin(
         name = "Log4j2TestAppender",
         category = Core.CATEGORY_NAME,
         elementType = Appender.ELEMENT_TYPE)
 public class Log4j2TestAppender extends AbstractAppender {
 
     private static final LinkedList<Pair<LogEvent, String>> EVENT_LIST = new LinkedList<>();
 
     public static String last(String name) {
         synchronized (EVENT_LIST) {
             if (EVENT_LIST.isEmpty()) {
                 return null;
             }
             Pair<LogEvent, String> event = EVENT_LIST.removeLast();
             while (event != null && event.getLeft().getLoggerName() != null && !event.getLeft().getLoggerName().equals(name)) {
                 event = EVENT_LIST.removeLast();
             }
             EVENT_LIST.clear();
             if (event != null) {
                 return event.getRight();
             } else {
                 return null;
             }
         }
     }
 
     protected Log4j2TestAppender(String name, Filter filter) {
         super(name, filter, null, true, null);
     }
 
     @SuppressWarnings("unused")
     @PluginFactory
     public static Log4j2TestAppender createAppender(
             @PluginAttribute("name") String name,
             @PluginElement("Filter") Filter filter) {
         return new Log4j2TestAppender(name, filter);
     }
 
     @Override
     public void append(LogEvent event) {
         synchronized (EVENT_LIST) {
             EVENT_LIST.add(Pair.of(event, event.getMessage().getFormattedMessage()));
             // keep memory low, since we want the last event usually anyway
             if (EVENT_LIST.size() > 10) {
                 EVENT_LIST.removeFirst();
             }
         }
     }
 }