/*
* Copyright ( c ) 2016 , 2017 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code 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 General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
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*/
/**
* @ test
* @ library / test / lib
* @ modules java . base / jdk . internal . module
* @ build MultiReleaseJarTest jdk . test . lib . util . JarUtils
* @ run testng MultiReleaseJarTest
* @ run testng / othervm - Djdk . util . jar . enableMultiRelease = false MultiReleaseJarTest
* @ summary Basic test of modular JARs as multi - release JARs
*/
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.module.ModuleDescriptor;
import java.lang.module.ModuleFinder;
import java.lang.module.ModuleReader;
import java.lang.module.ModuleReference;
import java.net.URI;
import java.net.URLConnection;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.jar.Attributes;
import java.util.jar.Manifest;
import jdk.internal.module.ModuleInfoWriter;
import jdk.test.lib.util.JarUtils;
import org.testng.annotations.Test;
import static org.testng.Assert .*;
@Test
public class MultiReleaseJarTest {
private static final String MODULE_INFO = "module-info.class" ;
private static final int VERSION = Runtime.version().major();
// are multi-release JARs enabled?
private static final boolean MULTI_RELEASE;
static {
String s = System.getProperty("jdk.util.jar.enableMultiRelease" );
MULTI_RELEASE = (s == null || Boolean .parseBoolean(s));
}
/**
* Basic test of a multi - release JAR .
*/
public void testBasic() throws Exception {
String name = "m1" ;
ModuleDescriptor descriptor = ModuleDescriptor.newModule(name)
.requires("java.base" )
.build();
Path jar = new JarBuilder(name)
.moduleInfo("module-info.class" , descriptor)
.resource("p/Main.class" )
.resource("p/Helper.class" )
.resource("META-INF/versions/" + VERSION + "/p/Helper.class" )
.resource("META-INF/versions/" + VERSION + "/p/internal/Helper.class" )
.build();
// find the module
ModuleFinder finder = ModuleFinder.of(jar);
Optional<ModuleReference> omref = finder.find(name);
assertTrue((omref.isPresent()));
ModuleReference mref = omref.get();
// check module packages
descriptor = mref.descriptor();
Set<String> packages = descriptor.packages();
assertTrue(packages.contains("p" ));
if (MULTI_RELEASE) {
assertTrue(packages.size() == 2 );
assertTrue(packages.contains("p.internal" ));
} else {
assertTrue(packages.size() == 1 );
}
}
/**
* Test a multi - release JAR with a module - info . class in the versioned
* section of the JAR .
*/
public void testModuleInfoInVersionedSection() throws Exception {
String name = "m1" ;
ModuleDescriptor descriptor1 = ModuleDescriptor.newModule(name)
.requires("java.base" )
.build();
// module descriptor for versioned section
ModuleDescriptor descriptor2 = ModuleDescriptor.newModule(name)
.requires("java.base" )
.requires("jdk.unsupported" )
.build();
Path jar = new JarBuilder(name)
.moduleInfo(MODULE_INFO, descriptor1)
.resource("p/Main.class" )
.resource("p/Helper.class" )
.moduleInfo("META-INF/versions/" + VERSION + "/" + MODULE_INFO, descriptor2)
.resource("META-INF/versions/" + VERSION + "/p/Helper.class" )
.resource("META-INF/versions/" + VERSION + "/p/internal/Helper.class" )
.build();
// find the module
ModuleFinder finder = ModuleFinder.of(jar);
Optional<ModuleReference> omref = finder.find(name);
assertTrue((omref.isPresent()));
ModuleReference mref = omref.get();
// ensure that the right module-info.class is loaded
ModuleDescriptor descriptor = mref.descriptor();
assertEquals(descriptor.name(), name);
if (MULTI_RELEASE) {
assertEquals(descriptor.requires(), descriptor2.requires());
} else {
assertEquals(descriptor.requires(), descriptor1.requires());
}
}
/**
* Test multi - release JAR as an automatic module .
*/
public void testAutomaticModule() throws Exception {
String name = "m" ;
Path jar = new JarBuilder(name)
.resource("p/Main.class" )
.resource("p/Helper.class" )
.resource("META-INF/versions/" + VERSION + "/p/Helper.class" )
.resource("META-INF/versions/" + VERSION + "/p/internal/Helper.class" )
.build();
// find the module
ModuleFinder finder = ModuleFinder.of(jar);
Optional<ModuleReference> omref = finder.find(name);
assertTrue((omref.isPresent()));
ModuleReference mref = omref.get();
// check module packages
ModuleDescriptor descriptor = mref.descriptor();
Set<String> packages = descriptor.packages();
if (MULTI_RELEASE) {
assertTrue(packages.size() == 2 );
assertTrue(packages.contains("p.internal" ));
} else {
assertTrue(packages.size() == 1 );
}
}
/**
* Exercise ModuleReader on a multi - release JAR
*/
public void testModuleReader() throws Exception {
String name = "m1" ;
ModuleDescriptor descriptor1 = ModuleDescriptor.newModule(name)
.requires("java.base" )
.build();
// module descriptor for versioned section
ModuleDescriptor descriptor2 = ModuleDescriptor.newModule(name)
.requires("java.base" )
.requires("jdk.unsupported" )
.build();
Path jar = new JarBuilder(name)
.moduleInfo(MODULE_INFO, descriptor1)
.moduleInfo("META-INF/versions/" + VERSION + "/" + MODULE_INFO, descriptor2)
.build();
// find the module
ModuleFinder finder = ModuleFinder.of(jar);
Optional<ModuleReference> omref = finder.find(name);
assertTrue((omref.isPresent()));
ModuleReference mref = omref.get();
ModuleDescriptor expected;
if (MULTI_RELEASE) {
expected = descriptor2;
} else {
expected = descriptor1;
}
// test ModuleReader by reading module-info.class resource
try (ModuleReader reader = mref.open()) {
// open resource
Optional<InputStream> oin = reader.open(MODULE_INFO);
assertTrue(oin.isPresent());
try (InputStream in = oin.get()) {
checkRequires(ModuleDescriptor.read(in), expected);
}
// read resource
Optional<ByteBuffer> obb = reader.read(MODULE_INFO);
assertTrue(obb.isPresent());
ByteBuffer bb = obb.get();
try {
checkRequires(ModuleDescriptor.read(bb), expected);
} finally {
reader.release(bb);
}
// find resource
Optional<URI> ouri = reader.find(MODULE_INFO);
assertTrue(ouri.isPresent());
URI uri = ouri.get();
String expectedTail = "!/" ;
if (MULTI_RELEASE)
expectedTail += "META-INF/versions/" + VERSION + "/" ;
expectedTail += MODULE_INFO;
assertTrue(uri.toString().endsWith(expectedTail));
URLConnection uc = uri.toURL().openConnection();
uc.setUseCaches(false );
try (InputStream in = uc.getInputStream()) {
checkRequires(ModuleDescriptor.read(in), expected);
}
}
}
/**
* Check that two ModuleDescriptor have the same requires
*/
static void checkRequires(ModuleDescriptor md1, ModuleDescriptor md2) {
assertEquals(md1.requires(), md2.requires());
}
/**
* A builder of multi - release JAR files .
*/
static class JarBuilder {
private String name;
private Set<String> resources = new HashSet<>();
private Map<String, ModuleDescriptor> descriptors = new HashMap<>();
JarBuilder(String name) {
this .name = name;
}
/**
* Adds a module - info . class to the JAR file .
*/
JarBuilder moduleInfo(String name, ModuleDescriptor descriptor) {
descriptors.put(name, descriptor);
return this ;
}
/**
* Adds a dummy resource to the JAR file .
*/
JarBuilder resource(String name) {
resources.add(name);
return this ;
}
/**
* Create the multi - release JAR , returning its file path .
*/
Path build() throws Exception {
Path dir = Files.createTempDirectory(Paths.get("" ), "jar" );
List<Path> files = new ArrayList<>();
// write the module-info.class
for (Map.Entry<String, ModuleDescriptor> e : descriptors.entrySet()) {
String name = e.getKey();
ModuleDescriptor descriptor = e.getValue();
Path mi = Paths.get(name.replace('/' , File.separatorChar));
Path parent = dir.resolve(mi).getParent();
if (parent != null )
Files.createDirectories(parent);
try (OutputStream out = Files.newOutputStream(dir.resolve(mi))) {
ModuleInfoWriter.write(descriptor, out);
}
files.add(mi);
}
// write the dummy resources
for (String name : resources) {
Path file = Paths.get(name.replace('/' , File.separatorChar));
// create dummy resource
Path parent = dir.resolve(file).getParent();
if (parent != null )
Files.createDirectories(parent);
Files.createFile(dir.resolve(file));
files.add(file);
}
Manifest man = new Manifest();
Attributes attrs = man.getMainAttributes();
attrs.put(Attributes.Name.MANIFEST_VERSION, "1.0" );
attrs.put(Attributes.Name.MULTI_RELEASE, "true" );
Path jarfile = Paths.get(name + ".jar" );
JarUtils.createJarFile(jarfile, man, dir, files.toArray(new Path[0 ]));
return jarfile;
}
}
}
Messung V0.5 in Prozent C=96 H=91 G=93
¤ Dauer der Verarbeitung: 0.9 Sekunden
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