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Tests: Add unit tests for JarHell

This commit is contained in:
Ryan Ernst 2015-07-07 16:54:03 -07:00
parent 7dbc5c7ab9
commit 35b76ca081
3 changed files with 206 additions and 0 deletions
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core/src/test/java/org/elasticsearch/bootstrap/JarHellTests.java Normal file
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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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.elasticsearch.bootstrap;
import org.elasticsearch.test.ElasticsearchTestCase;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.jar.Attributes;
import java.util.jar.JarOutputStream;
import java.util.jar.Manifest;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class JarHellTests extends ElasticsearchTestCase {
URL makeJar(Path dir, String name, Manifest manifest, String... files) throws IOException {
Path jarpath = dir.resolve(name);
ZipOutputStream out;
if (manifest == null) {
out = new JarOutputStream(Files.newOutputStream(jarpath, StandardOpenOption.CREATE));
} else {
out = new JarOutputStream(Files.newOutputStream(jarpath, StandardOpenOption.CREATE), manifest);
}
for (String file : files) {
out.putNextEntry(new ZipEntry(file));
}
out.close();
return jarpath.toUri().toURL();
}
URL makeFile(Path dir, String name) throws IOException {
Path filepath = dir.resolve(name);
Files.newOutputStream(filepath, StandardOpenOption.CREATE).close();
return filepath.toUri().toURL();
}
public void testDifferentJars() throws Exception {
Path dir = createTempDir();
URL[] jars = {makeJar(dir, "foo.jar", null, "DuplicateClass.class"), makeJar(dir, "bar.jar", null, "DuplicateClass.class")};
try {
JarHell.checkJarHell(jars);
} catch (IllegalStateException e) {
assertTrue(e.getMessage().contains("jar hell!"));
assertTrue(e.getMessage().contains("DuplicateClass"));
assertTrue(e.getMessage().contains("foo.jar"));
assertTrue(e.getMessage().contains("bar.jar"));
}
}
public void testBootclasspathLeniency() throws Exception {
Path dir = createTempDir();
String previousJavaHome = System.getProperty("java.home");
System.setProperty("java.home", dir.toString());
URL[] jars = {makeJar(dir, "foo.jar", null, "DuplicateClass.class"), makeJar(dir, "bar.jar", null, "DuplicateClass.class")};
try {
JarHell.checkJarHell(jars);
} finally {
System.setProperty("java.home", previousJavaHome);
}
}
public void testDuplicateClasspathLeniency() throws Exception {
Path dir = createTempDir();
URL jar = makeJar(dir, "foo.jar", null, "Foo.class");
URL[] jars = {jar, jar};
JarHell.checkJarHell(jars);
}
public void testDirsOnClasspath() throws Exception {
Path dir1 = createTempDir();
Path dir2 = createTempDir();
URL[] dirs = {makeFile(dir1, "DuplicateClass.class"), makeFile(dir2, "DuplicateClass.class")};
try {
JarHell.checkJarHell(dirs);
} catch (IllegalStateException e) {
assertTrue(e.getMessage().contains("jar hell!"));
assertTrue(e.getMessage().contains("DuplicateClass"));
assertTrue(e.getMessage().contains(dir1.toString()));
assertTrue(e.getMessage().contains(dir2.toString()));
}
}
public void testDirAndJar() throws Exception {
Path dir1 = createTempDir();
Path dir2 = createTempDir();
URL[] dirs = {makeJar(dir1, "foo.jar", null, "DuplicateClass.class"), makeFile(dir2, "DuplicateClass.class")};
try {
JarHell.checkJarHell(dirs);
} catch (IllegalStateException e) {
assertTrue(e.getMessage().contains("jar hell!"));
assertTrue(e.getMessage().contains("DuplicateClass"));
assertTrue(e.getMessage().contains("foo.jar"));
assertTrue(e.getMessage().contains(dir2.toString()));
}
}
public void testLog4jLeniency() throws Exception {
Path dir = createTempDir();
URL[] jars = {makeJar(dir, "foo.jar", null, "org/apache/log4j/DuplicateClass.class"), makeJar(dir, "bar.jar", null, "org/apache/log4j/DuplicateClass.class")};
JarHell.checkJarHell(jars);
}
public void testBaseDateTimeLeniency() throws Exception {
Path dir = createTempDir();
URL[] jars = {makeJar(dir, "foo.jar", null, "org/joda/time/base/BaseDateTime.class"), makeJar(dir, "bar.jar", null, "org/joda/time/base/BaseDateTime.class")};
JarHell.checkJarHell(jars);
}
public void testWithinSingleJar() throws Exception {
// the java api for zip file does not allow creating duplicate entries (good!) so
// this bogus jar had to be constructed with ant
URL[] jars = {JarHellTests.class.getResource("duplicate-classes.jar")};
try {
JarHell.checkJarHell(jars);
} catch (IllegalStateException e) {
assertTrue(e.getMessage().contains("jar hell!"));
assertTrue(e.getMessage().contains("DuplicateClass"));
assertTrue(e.getMessage().contains("duplicate-classes.jar"));
assertTrue(e.getMessage().contains("exists multiple times in jar"));
}
}
public void testXmlBeansLeniency() throws Exception {
URL[] jars = {JarHellTests.class.getResource("duplicate-xmlbeans-classes.jar")};
JarHell.checkJarHell(jars);
}
public void testRequiredJDKVersionTooOld() throws Exception {
Path dir = createTempDir();
String previousJavaVersion = System.getProperty("java.specification.version");
System.setProperty("java.specification.version", "1.7");
Manifest manifest = new Manifest();
manifest.getMainAttributes().put(new Attributes.Name("X-Compile-Target-JDK"), "1.8");
URL[] jars = {makeJar(dir, "foo.jar", manifest, "Foo.class")};
try {
JarHell.checkJarHell(jars);
} catch (IllegalStateException e) {
assertTrue(e.getMessage().contains("requires java 1.8"));
assertTrue(e.getMessage().contains("your system: 1.7"));
} finally {
System.setProperty("java.specification.version", previousJavaVersion);
}
}
public void testRequiredJDKVersionIsOK() throws Exception {
Path dir = createTempDir();
String previousJavaVersion = System.getProperty("java.specification.version");
System.setProperty("java.specification.version", "1.7");
Manifest manifest = new Manifest();
manifest.getMainAttributes().put(new Attributes.Name("X-Compile-Target-JDK"), "1.7");
URL[] jars = {makeJar(dir, "foo.jar", manifest, "Foo.class")};
try {
JarHell.checkJarHell(jars);
} finally {
System.setProperty("java.specification.version", previousJavaVersion);
}
}
public void testBadJDKVersionProperty() throws Exception {
Path dir = createTempDir();
String previousJavaVersion = System.getProperty("java.specification.version");
System.setProperty("java.specification.version", "bogus");
Manifest manifest = new Manifest();
manifest.getMainAttributes().put(new Attributes.Name("X-Compile-Target-JDK"), "1.7");
URL[] jars = {makeJar(dir, "foo.jar", manifest, "Foo.class")};
try {
JarHell.checkJarHell(jars);
} finally {
System.setProperty("java.specification.version", previousJavaVersion);
}
}
public void testBadJDKVersionInJar() throws Exception {
Path dir = createTempDir();
Manifest manifest = new Manifest();
manifest.getMainAttributes().put(new Attributes.Name("X-Compile-Target-JDK"), "bogus");
URL[] jars = {makeJar(dir, "foo.jar", manifest, "Foo.class")};
JarHell.checkJarHell(jars);
}
}

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