/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2013, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package ch.qos.logback.classic.spi;
import static junit.framework.Assert.assertNotNull;
import static junit.framework.Assert.assertTrue;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import org.junit.Ignore;
import org.junit.Test;
import ch.qos.logback.classic.util.TeztHelper;
public class PackagingDataCalculatorTest {
public void verify(ThrowableProxy tp) {
for (StackTraceElementProxy step : tp.getStackTraceElementProxyArray()) {
if (step != null) {
assertNotNull(step.getClassPackagingData());
}
}
}
@Test
public void smoke() throws Exception {
Throwable t = new Throwable("x");
ThrowableProxy tp = new ThrowableProxy(t);
PackagingDataCalculator pdc = tp.getPackagingDataCalculator();
pdc.calculate(tp);
verify(tp);
tp.fullDump();
}
@Test
public void nested() throws Exception {
Throwable t = TeztHelper.makeNestedException(3);
ThrowableProxy tp = new ThrowableProxy(t);
PackagingDataCalculator pdc = tp.getPackagingDataCalculator();
pdc.calculate(tp);
verify(tp);
}
public void doCalculateClassPackagingData(
boolean withClassPackagingCalculation) {
try {
throw new Exception("testing");
} catch (Throwable e) {
ThrowableProxy tp = new ThrowableProxy(e);
if (withClassPackagingCalculation) {
PackagingDataCalculator pdc = tp.getPackagingDataCalculator();
pdc.calculate(tp);
}
}
}
double loop(int len, boolean withClassPackagingCalculation) {
long start = System.nanoTime();
for (int i = 0; i < len; i++) {
doCalculateClassPackagingData(withClassPackagingCalculation);
}
return (1.0 * System.nanoTime() - start) / len / 1000;
}
@Ignore
@Test
public void perfTest() {
int len = 1000;
loop(len, false);
loop(len, true);
double d0 = loop(len, false);
System.out.println("without packaging info " + d0 + " microseconds");
double d1 = loop(len, true);
System.out.println("with packaging info " + d1 + " microseconds");
// be more lenient with other JDKs, esp for logback-android,
// which computes packaging info by STEP (slow)
int slackFactor = 15;
assertTrue("computing class packaging data (" + d1
+ ") should have been less than " + slackFactor
+ " times the time it takes to process an exception "
+ (d0 * slackFactor), d0 * slackFactor > d1);
}
private ClassLoader makeBogusClassLoader() throws MalformedURLException {
ClassLoader currentClassLoader = this.getClass().getClassLoader();
return new BogusClassLoader(new URL[] {},
currentClassLoader);
}
@Test
// Test http://jira.qos.ch/browse/LBCLASSIC-125
public void noClassDefFoundError_LBCLASSIC_125Test()
throws MalformedURLException {
ClassLoader cl = (URLClassLoader) makeBogusClassLoader();
Thread.currentThread().setContextClassLoader(cl);
Throwable t = new Throwable("x");
ThrowableProxy tp = new ThrowableProxy(t);
StackTraceElementProxy[] stepArray = tp.getStackTraceElementProxyArray();
StackTraceElement bogusSTE = new StackTraceElement("com.Bogus", "myMethod",
"myFile", 12);
stepArray[0] = new StackTraceElementProxy(bogusSTE);
PackagingDataCalculator pdc = tp.getPackagingDataCalculator();
// NoClassDefFoundError should be caught
pdc.calculate(tp);
}
}