Java tutorial
/* * Copyright 2013 Cedric Dandoy * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.bug4j.client; import org.apache.commons.lang3.StringUtils; import org.apache.log4j.LogManager; import org.apache.log4j.Logger; import org.junit.Assert; import org.junit.Ignore; import org.junit.Test; import java.io.FileInputStream; import java.io.IOException; import java.util.ArrayList; import java.util.Random; /** * This is a test */ public class Bug4jTest { private static final Logger LOGGER = Logger.getLogger(Bug4jTest.class); @Test public void testLog4j() throws Exception { try { final FileInputStream fileInputStream = new FileInputStream("c:\\bogus"); fileInputStream.close(); } catch (IOException e) { LOGGER.error("Failed to do something", e); } try { doSomethingBad(); } catch (Exception e) { LOGGER.error("Something else happened.", e); } try { doSomethingBad(); } catch (Exception e) { LOGGER.warn("just a warning", e); } LogManager.shutdown(); Bug4jAgent.shutdown(); Assert.assertEquals(2, Bug4jAgent.getReported()); } @Test public void testNoStacks() throws Exception { LOGGER.error("testNoStacks:error"); LOGGER.warn("testNoStacks:warn"); LOGGER.info("testNoStacks:info"); LogManager.shutdown(); Bug4jAgent.shutdown(); Assert.assertEquals(1, Bug4jAgent.getReported()); } @Test public void testUseDefaultExceptionHandler() throws Exception { Bug4jUncaughtExceptionHandler.install(); final Thread thread = new Thread() { @Override public void run() { doSomethingBad(); } }; thread.start(); thread.join(); Bug4jAgent.shutdown(); Assert.assertEquals(1, Bug4jAgent.getReported()); } @Test public void testDirectCall() throws Exception { try { final FileInputStream fileInputStream = new FileInputStream("c:\\bogus"); fileInputStream.close(); } catch (IOException e) { Bug4jAgent.report("Failed to do something", e); } Bug4jAgent.shutdown(); Assert.assertEquals(1, Bug4jAgent.getReported()); } @Test public void testDirectCallNoMessage() throws Exception { try { final FileInputStream fileInputStream = new FileInputStream("c:\\bogus"); fileInputStream.close(); } catch (IOException e) { Bug4jAgent.report(e); } Bug4jAgent.shutdown(); Assert.assertEquals(1, Bug4jAgent.getReported()); } @Test public void testForceNew() throws Exception { final IllegalStateException e = new IllegalStateException("oh, c 'est d\u00e9j\u00e0 cass\u00e9?"); e.setStackTrace(new StackTraceElement[] { new StackTraceElement("org.bug4j.SomeClass", buildRandomMethodName(), "SomeClass.java", (int) (Math.random() * 10000)), new StackTraceElement("org.bug4j.SomeClass", buildRandomMethodName(), "SomeClass.java", (int) (Math.random() * 10000)), new StackTraceElement("org.bug4j.SomeClass", buildRandomMethodName(), "SomeClass.java", (int) (Math.random() * 10000)), new StackTraceElement("org.bug4j.SomeClass", buildRandomMethodName(), "SomeClass.java", (int) (Math.random() * 10000)), new StackTraceElement("org.bug4j.SomeClass", buildRandomMethodName(), "SomeClass.java", (int) (Math.random() * 10000)), new StackTraceElement("org.bug4j.SomeClass", buildRandomMethodName(), "SomeClass.java", (int) (Math.random() * 10000)), new StackTraceElement("org.bug4j.SomeClass", buildRandomMethodName(), "SomeClass.java", (int) (Math.random() * 10000)), new StackTraceElement("org.bug4j.SomeClass", buildRandomMethodName(), "SomeClass.java", (int) (Math.random() * 10000)) }); Bug4jAgent.report("Forcing a new exception", e); Bug4jAgent.shutdown(); Assert.assertEquals(1, Bug4jAgent.getReported()); } @Test public void testSameTitle() throws Exception { final Random random = new Random(); { final IllegalStateException e = new IllegalStateException("SameTitle"); e.setStackTrace(new StackTraceElement[] { new StackTraceElement("org.bug4j.SomeClass", "someMethod", "SomeClass.java", 100), new StackTraceElement("org.bug4j.SomeClass", "someMethod", "SomeClass.java", random.nextInt()), new StackTraceElement("org.bug4j.SomeClass", "someMethod", "SomeClass.java", random.nextInt()), new StackTraceElement("org.bug4j.SomeClass", "someMethod", "SomeClass.java", random.nextInt()), }); Bug4jAgent.report("testSameTitle", e); } { final IllegalStateException e = new IllegalStateException("SameTitle"); e.setStackTrace(new StackTraceElement[] { new StackTraceElement("org.bug4j.SomeClass", "someMethod", "SomeClass.java", 100), new StackTraceElement("org.bug4j.someOtherClass", "someOtherMethod", "SomeClass.java", random.nextInt()), new StackTraceElement("org.bug4j.someOtherClass", "someOtherMethod", "SomeClass.java", random.nextInt()), new StackTraceElement("org.bug4j.someOtherClass", "someMethod", "SomeClass.java", random.nextInt()), }); Bug4jAgent.report("testSameTitle", e); } Bug4jAgent.shutdown(); Assert.assertEquals(2, Bug4jAgent.getReported()); } /** * Verifies that we don't report the same error twice */ @Test public void testNoReReport() throws Exception { { final IllegalStateException e = new IllegalStateException("SameTitle"); e.setStackTrace(new StackTraceElement[] { new StackTraceElement("org.bug4j.SomeClass", "testSameTitle", "SomeClass.java", 100), new StackTraceElement("org.bug4j.SomeClass", "testSameTitle", "SomeClass.java", 200), new StackTraceElement("org.bug4j.SomeClass", "testSameTitle", "SomeClass.java", 300), new StackTraceElement("org.bug4j.SomeClass", "testSameTitle", "SomeClass.java", 400), }); for (int i = 0; i < 10; i++) { Bug4jAgent.report("testSameTitle", e); } } Bug4jAgent.shutdown(); Assert.assertEquals(1, Bug4jAgent.getReported()); } @Test public void testNoStackError() throws Exception { Bug4jAgent.report("Just a message", (Throwable) null); Bug4jAgent.shutdown(); } @Test public void testWarning() throws Exception { Bug4jAgent.report("Just a message", (Throwable) null); Bug4jAgent.shutdown(); } @Test public void testLongTitle() throws Exception { Bug4jAgent.report(StringUtils.repeat("This_is_a_long_title", 100), (Throwable) null); Bug4jAgent.shutdown(); } @Test @Ignore public void testCreateMany() throws Exception { for (int i = 0; i < 1000; i++) { testForceNew(); } } private String buildRandomMethodName() { final StringBuilder stringBuilder = new StringBuilder(); for (int i = 0; i < 10; i++) { final char c = (char) (Math.random() * 26 + 'a'); stringBuilder.append(c); } return stringBuilder.toString(); } private void doSomethingBad() { try { doSomethingNotTooGood(); } catch (Exception e) { throw new IllegalStateException("oh oh!", e); } } private void doSomethingNotTooGood() { new ArrayList<String>().get(1); } }