package ch.qos.logback.classic;

import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.core.read.ListAppender;
import junit.framework.TestCase;

public class AppenderWithLevelTest extends TestCase {

	public void testLoggerWithAppenderWithLowerLevel() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    ListAppender<LoggingEvent> listDebugAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    listDebugAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.INFO);
	    root.addAppender(listAppender);
	    root.addAppender(listDebugAppender, Level.DEBUG);
	    
	    root.debug("hello");
	    // Should have logger's level of info, so nothing appended
	    assertEquals(0, listAppender.list.size());
	    // Should have own level of debug, so appended
	    assertEquals(1, listDebugAppender.list.size());
	}
	
	public void testSettingLevelOnLoggerAfterAddingAppenderWithLowerLevel() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    ListAppender<LoggingEvent> listDebugAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    listDebugAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.addAppender(listAppender);
	    root.addAppender(listDebugAppender, Level.DEBUG);
	    root.setLevel(Level.INFO);
	    
	    root.debug("hello");
	    // Should have logger's level of info, so nothing appended
	    assertEquals(0, listAppender.list.size());
	    // Should have own level of debug, so appended
	    assertEquals(1, listDebugAppender.list.size());
	}
	
	public void testLoggerWithAppenderWithHigherLevel() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    ListAppender<LoggingEvent> listInfoAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    listInfoAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.DEBUG);
	    root.addAppender(listAppender);
	    root.addAppender(listInfoAppender, Level.INFO);
	    
	    root.debug("hello");
	    // Should have logger's level of debug, so appended
	    assertEquals(1, listAppender.list.size());
	    // Should have own level of info, so nothing appended
	    assertEquals(0, listInfoAppender.list.size());
	}
	
	public void testSettingLevelOnLoggerAfterAddingAppenderWithHigherLevel() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    ListAppender<LoggingEvent> listInfoAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    listInfoAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.addAppender(listAppender);
	    root.addAppender(listInfoAppender, Level.INFO);
	    root.setLevel(Level.DEBUG);
	    
	    root.debug("hello");
	    // Should have logger's level of debug, so appended
	    assertEquals(1, listAppender.list.size());
	    // Should have own level of info, so nothing appended
	    assertEquals(0, listInfoAppender.list.size());
	}
	
	public void testLoggerLevelIrreleventToAppendersWithLevelOnParentLogger() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> debugListAppender = new ListAppender<LoggingEvent>();
	    debugListAppender.start();
	    ListAppender<LoggingEvent> errorListAppender = new ListAppender<LoggingEvent>();
	    errorListAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.DEBUG);
	    root.addAppender(debugListAppender, Level.DEBUG);
	    root.addAppender(errorListAppender, Level.ERROR);
	    
	    Logger x = lc.getLogger("x");
	    x.setLevel(Level.INFO);
	    
	    x.debug("hello");
	    // Debug appender should get this, error appender not
	    assertEquals(1, debugListAppender.list.size());
	    assertEquals(0, errorListAppender.list.size());
	    
	    x.info("hello");
	    // Debug appender should get this, error appender not
	    assertEquals(2, debugListAppender.list.size());
	    assertEquals(0, errorListAppender.list.size());
	    
	    x.error("hello");
	    // Both appenders should get this
	    assertEquals(3, debugListAppender.list.size());
	    assertEquals(1, errorListAppender.list.size());
	}
	
	public void testAppenderWithLevelOnParentDoesNotChangeBehaviourOfNormalAppender() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listDebugAppender = new ListAppender<LoggingEvent>();
	    listDebugAppender.start();
	    ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.INFO);
	    root.addAppender(listDebugAppender, Level.DEBUG);
	    root.addAppender(listAppender);
	    
	    Logger x = lc.getLogger("x");
	    x.setLevel(Level.ERROR);
	    
	    x.debug("hello");
	    
	    assertEquals(0, listAppender.list.size());
	    assertEquals(1, listDebugAppender.list.size());
	}
	
	public void testLoggerWithLowerLevelOverridesAppenderWithLevelOnParentLogger() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.INFO);
	    root.addAppender(listAppender, Level.INFO);
	    
	    Logger x = lc.getLogger("x");
	    x.setLevel(Level.DEBUG);
	    
	    x.debug("hello");
	    // Should have appender's level of info, so not appended
	    assertEquals(0, listAppender.list.size());
	    
	    x.info("hello again");
	    assertEquals(1, listAppender.list.size());
	    
	    
	}
	
	public void testAppenderWithLowerLevelOverridesLevelOnParentLogger() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.INFO);
	    
	    Logger x = lc.getLogger("x");
	    x.addAppender(listAppender, Level.DEBUG);
	    
	    x.debug("hello");
	    
	    // Should have appender's level of debug, so appended
	    assertEquals(1, listAppender.list.size());
	}
	
	public void testAppenderWithHigherLevelOverridesLevelOnParentLogger() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.DEBUG);
	    
	    Logger x = lc.getLogger("x");
	    x.addAppender(listAppender, Level.INFO);
	    
	    x.debug("hello");
	    
	    // Should have appender's level of info, so not appended
	    assertEquals(0, listAppender.list.size());
	}
	
	public void testAppenderWithLevelOverridesAppenderWithLevelOnParentLogger() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.INFO);
	    root.addAppender(listAppender, Level.INFO);
	    
	    Logger x = lc.getLogger("x");
	    x.addAppender(listAppender, Level.DEBUG);
	    
	    x.debug("hello");
	    
	    // Should have latest appender's level of debug, so appended
	    assertEquals(1, listAppender.list.size());
	}
	
	public void testChangingParentLevelWhenChildHasAppenderWithLevel() {
		LoggerContext lc = new LoggerContext();
		ListAppender<LoggingEvent> listDebugAppender = new ListAppender<LoggingEvent>();
		listDebugAppender.start();
	    ListAppender<LoggingEvent> listAppender = new ListAppender<LoggingEvent>();
	    listAppender.start();
	    
	    Logger x = lc.getLogger("x");
	    x.addAppender(listDebugAppender, Level.DEBUG);
	    
	    Logger root = lc.getLogger(LoggerContext.ROOT_NAME);
	    root.setLevel(Level.INFO);
	    root.addAppender(listAppender);
	    
	    x.debug("hello");
	    
	    // Should have x's appender's level of debug, so appended
	    assertEquals(1, listDebugAppender.list.size());
	    // Should have root's level of info, so not appended
	    assertEquals(0, listAppender.list.size());
	}
}