From 4d55da5c7e0ec262c7ea2fdd8cd99bbe6a36367f Mon Sep 17 00:00:00 2001 From: Trustin Lee Date: Mon, 25 Aug 2008 05:48:45 +0000 Subject: [PATCH] Added StackTraceSimplifierTest --- .../netty/util/StackTraceSimplifierTest.java | 133 ++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 src/test/java/org/jboss/netty/util/StackTraceSimplifierTest.java diff --git a/src/test/java/org/jboss/netty/util/StackTraceSimplifierTest.java b/src/test/java/org/jboss/netty/util/StackTraceSimplifierTest.java new file mode 100644 index 0000000000..eefd912ba2 --- /dev/null +++ b/src/test/java/org/jboss/netty/util/StackTraceSimplifierTest.java @@ -0,0 +1,133 @@ +/* + * JBoss, Home of Professional Open Source + * + * Copyright 2008, Red Hat Middleware LLC, and individual contributors + * by the @author tags. See the COPYRIGHT.txt in the distribution for a + * full listing of individual contributors. + * + * This is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * This software is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this software; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA, or see the FSF site: http://www.fsf.org. + */ +package org.jboss.netty.util; + +import static org.easymock.EasyMock.*; +import static org.easymock.classextension.EasyMock.*; +import static org.junit.Assert.*; + +import org.jboss.netty.buffer.ChannelBuffer; +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.DefaultChannelPipeline; +import org.jboss.netty.channel.SimpleChannelHandler; +import org.junit.Test; + + +/** + * @author The Netty Project (netty-dev@lists.jboss.org) + * @author Trustin Lee (tlee@redhat.com) + * + * @version $Rev$, $Date$ + * + */ +public class StackTraceSimplifierTest { + + @Test + public void testBasicSimplification() { + Exception e = new Exception(); + e.setStackTrace(new StackTraceElement[] { + new StackTraceElement(ChannelBuffer.class.getName(), "a", null, 1), + new StackTraceElement("com.example.Foo", "b", null, 1), + new StackTraceElement(SimpleChannelHandler.class.getName(), "c", null, 1), + new StackTraceElement(ThreadRenamingRunnable.class.getName(), "d", null, 1), + }); + + StackTraceSimplifier.simplify(e); + + StackTraceElement[] simplified = e.getStackTrace(); + assertEquals(2, simplified.length); + assertEquals(ChannelBuffer.class.getName(), simplified[0].getClassName()); + assertEquals("com.example.Foo", simplified[1].getClassName()); + } + + @Test + public void testNestedSimplification() { + Exception e1 = new Exception(); + e1.setStackTrace(new StackTraceElement[] { + new StackTraceElement(ChannelBuffer.class.getName(), "a", null, 1), + new StackTraceElement("com.example.Foo", "b", null, 1), + new StackTraceElement(SimpleChannelHandler.class.getName(), "c", null, 1), + new StackTraceElement(DefaultChannelPipeline.class.getName(), "d", null, 1), + new StackTraceElement(ThreadRenamingRunnable.class.getName(), "e", null, 1), + }); + + Exception e2 = new Exception(e1); + e2.setStackTrace(new StackTraceElement[] { + new StackTraceElement(Channel.class.getName(), "a", null, 1), + new StackTraceElement("com.example.Bar", "b", null, 1), + new StackTraceElement(SimpleChannelHandler.class.getName(), "c", null, 1), + new StackTraceElement(DefaultChannelPipeline.class.getName(), "d", null, 1), + new StackTraceElement(ThreadRenamingRunnable.class.getName(), "e", null, 1), + }); + + StackTraceSimplifier.simplify(e2); + + StackTraceElement[] simplified1 = e1.getStackTrace(); + assertEquals(2, simplified1.length); + assertEquals(ChannelBuffer.class.getName(), simplified1[0].getClassName()); + assertEquals("com.example.Foo", simplified1[1].getClassName()); + + StackTraceElement[] simplified2 = e2.getStackTrace(); + assertEquals(2, simplified2.length); + assertEquals(Channel.class.getName(), simplified2[0].getClassName()); + assertEquals("com.example.Bar", simplified2[1].getClassName()); + } + + @Test + public void testNettyBugDetection() { + Exception e = new Exception(); + e.setStackTrace(new StackTraceElement[] { + new StackTraceElement(DefaultChannelPipeline.class.getName(), "a", null, 1), + new StackTraceElement(ChannelBuffer.class.getName(), "a", null, 1), + new StackTraceElement("com.example.Foo", "b", null, 1), + new StackTraceElement(SimpleChannelHandler.class.getName(), "c", null, 1), + new StackTraceElement(ThreadRenamingRunnable.class.getName(), "d", null, 1), + }); + + StackTraceSimplifier.simplify(e); + + StackTraceElement[] simplified = e.getStackTrace(); + assertEquals(5, simplified.length); + } + + @Test + public void testEmptyStackTrace() { + Exception e = new Exception(); + e.setStackTrace(new StackTraceElement[0]); + + StackTraceSimplifier.simplify(e); + assertEquals(0, e.getStackTrace().length); + } + + + @Test + public void testNullStackTrace() { + Exception e = createNiceMock(Exception.class); + expect(e.getStackTrace()).andReturn(null).anyTimes(); + replay(e); + + StackTraceSimplifier.simplify(e); + assertNull(e.getStackTrace()); + verify(e); + } +}