330 lines
12 KiB
Java
330 lines
12 KiB
Java
/*
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* Copyright (c) 2014, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.lang.module.ModuleDescriptor.Exports;
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import java.lang.module.ResolvedModule;
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import java.nio.file.spi.FileSystemProvider; // service type in java.base
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import java.util.function.Predicate;
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import java.util.stream.Stream;
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import javax.print.PrintServiceLookup; // service type in java.desktop
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import org.testng.annotations.Test;
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import static org.testng.Assert.*;
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/*
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* @test
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* @summary Basic test of java.lang.Module
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* @modules java.desktop java.xml
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* @run testng/othervm BasicModuleTest
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*/
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public class BasicModuleTest {
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/**
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* Tests that the given module reads all modules in the boot layer.
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*/
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private void testReadsAllBootModules(Module m) {
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ModuleLayer bootLayer = ModuleLayer.boot();
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bootLayer.configuration()
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.modules()
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.stream()
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.map(ResolvedModule::name)
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.map(bootLayer::findModule)
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.forEach(target -> assertTrue(m.canRead(target.get())));
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}
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/**
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* Returns a {@code Predicate} to test if a package is exported.
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*/
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private Predicate<Exports> doesExport(String pn) {
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return e -> (e.source().equals(pn) && !e.isQualified());
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}
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@Test
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public void testThisModule() {
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Module thisModule = BasicModuleTest.class.getModule();
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Module baseModule = Object.class.getModule();
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assertFalse(thisModule.isNamed());
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assertTrue(thisModule.getName() == null);
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assertTrue(thisModule.getDescriptor() == null);
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assertTrue(thisModule.getLayer() == null);
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assertTrue(thisModule.toString().startsWith("unnamed module "));
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ClassLoader thisLoader = BasicModuleTest.class.getClassLoader();
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assertTrue(thisLoader == thisModule.getClassLoader());
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assertTrue(thisLoader.getUnnamedModule() == thisModule);
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// unnamed modules read all other modules
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ClassLoader cl;
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cl = ClassLoader.getPlatformClassLoader();
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assertTrue(thisModule.canRead(cl.getUnnamedModule()));
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cl = ClassLoader.getSystemClassLoader();
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assertTrue(thisModule.canRead(cl.getUnnamedModule()));
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testReadsAllBootModules(thisModule);
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// unnamed modules export all packages
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assertTrue(thisModule.isExported(""));
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assertTrue(thisModule.isExported("", thisModule));
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assertTrue(thisModule.isExported("", baseModule));
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assertTrue(thisModule.isExported("p"));
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assertTrue(thisModule.isExported("p", thisModule));
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assertTrue(thisModule.isExported("p", baseModule));
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// this test is in the unnamed package
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assertTrue(thisModule.getPackages().contains(""));
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}
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@Test
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public void testUnnamedModules() {
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Module thisModule = BasicModuleTest.class.getModule();
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Module baseModule = Object.class.getModule();
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ClassLoader loader1 = ClassLoader.getSystemClassLoader();
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ClassLoader loader2 = loader1.getParent();
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Module m1 = loader1.getUnnamedModule();
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Module m2 = loader2.getUnnamedModule();
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assertTrue(m1 != m2);
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assertFalse(m1.isNamed());
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assertFalse(m2.isNamed());
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assertTrue(m1.getLayer() == null);
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assertTrue(m2.getLayer() == null);
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assertTrue(m1.toString().startsWith("unnamed module "));
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assertTrue(m2.toString().startsWith("unnamed module "));
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// unnamed module reads all modules
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assertTrue(m1.canRead(m2));
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assertTrue(m2.canRead(m1));
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testReadsAllBootModules(m1);
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testReadsAllBootModules(m2);
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assertTrue(m1.isExported(""));
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assertTrue(m1.isExported("", thisModule));
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assertTrue(m1.isExported("", baseModule));
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assertTrue(m1.isExported("p"));
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assertTrue(m1.isExported("p", thisModule));
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assertTrue(m1.isExported("p", baseModule));
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}
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@Test
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public void testBaseModule() {
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Module base = Object.class.getModule();
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Module thisModule = BasicModuleTest.class.getModule();
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// getName
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assertTrue(base.getName().equals("java.base"));
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// getDescriptor
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assertTrue(base.getDescriptor().exports().stream()
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.anyMatch(doesExport("java.lang")));
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// getClassLoader
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assertTrue(base.getClassLoader() == null);
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// getLayer
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assertTrue(base.getLayer() == ModuleLayer.boot());
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// toString
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assertEquals(base.toString(), "module java.base");
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// getPackages
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assertTrue(base.getPackages().contains("java.lang"));
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// canRead
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assertTrue(base.canRead(base));
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assertFalse(base.canRead(thisModule));
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// addReads
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try {
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base.addReads(thisModule);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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assertFalse(base.canRead(thisModule));
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// isExported
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assertTrue(base.isExported("java.lang"));
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assertTrue(base.isExported("java.lang", thisModule));
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assertTrue(base.isExported("java.lang", base));
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assertFalse(base.isExported("jdk.internal.misc"));
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assertFalse(base.isExported("jdk.internal.misc", thisModule));
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assertTrue(base.isExported("jdk.internal.misc", base));
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assertFalse(base.isExported("java.wombat"));
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assertFalse(base.isExported("java.wombat", thisModule));
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assertFalse(base.isExported("java.wombat", base));
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// addExports
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try {
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base.addExports("java.lang", thisModule);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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try {
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base.addExports("jdk.internal.misc", thisModule);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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assertFalse(base.isExported("jdk.internal.misc"));
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assertFalse(base.isExported("jdk.internal.misc", thisModule));
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// isOpen
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assertFalse(base.isOpen("java.lang"));
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assertFalse(base.isOpen("java.lang", thisModule));
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assertTrue(base.isOpen("java.lang", base));
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assertFalse(base.isOpen("jdk.internal.misc"));
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assertFalse(base.isOpen("jdk.internal.misc", thisModule));
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assertTrue(base.isOpen("jdk.internal.misc", base));
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assertFalse(base.isOpen("java.wombat"));
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assertFalse(base.isOpen("java.wombat", thisModule));
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assertFalse(base.isOpen("java.wombat", base));
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// addOpens
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try {
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base.addOpens("jdk.internal.misc", thisModule);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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assertFalse(base.isOpen("jdk.internal.misc"));
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assertFalse(base.isOpen("jdk.internal.misc", thisModule));
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// canUse
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assertTrue(base.canUse(FileSystemProvider.class));
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assertFalse(base.canUse(Thread.class));
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// addUses
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try {
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base.addUses(FileSystemProvider.class);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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try {
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base.addUses(Thread.class);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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assertFalse(base.canUse(Thread.class));
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}
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@Test
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public void testDesktopModule() {
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Module desktop = java.awt.Component.class.getModule();
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Module base = Object.class.getModule();
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Module xml = javax.xml.XMLConstants.class.getModule();
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Module thisModule = BasicModuleTest.class.getModule();
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// name
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assertTrue(desktop.getName().equals("java.desktop"));
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// descriptor
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assertTrue(desktop.getDescriptor().exports().stream()
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.anyMatch(doesExport("java.awt")));
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// getClassLoader
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assertTrue(desktop.getClassLoader() == null);
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// getLayer
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assertTrue(desktop.getLayer() == ModuleLayer.boot());
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// toString
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assertEquals(desktop.toString(), "module java.desktop");
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// getPackages
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assertTrue(desktop.getPackages().contains("java.awt"));
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assertTrue(desktop.getPackages().contains("sun.awt"));
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// canRead
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assertTrue(desktop.canRead(base));
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assertTrue(desktop.canRead(xml));
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// addReads
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try {
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desktop.addReads(thisModule);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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assertFalse(desktop.canRead(thisModule));
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// isExported
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assertTrue(desktop.isExported("java.awt"));
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assertTrue(desktop.isExported("java.awt", thisModule));
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assertFalse(desktop.isExported("sun.awt"));
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assertFalse(desktop.isExported("sun.awt", thisModule));
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assertTrue(desktop.isExported("sun.awt", desktop));
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assertFalse(desktop.isExported("java.wombat"));
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assertFalse(desktop.isExported("java.wombat", thisModule));
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assertFalse(desktop.isExported("java.wombat", base));
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// addExports
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try {
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desktop.addExports("java.awt", thisModule);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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try {
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desktop.addExports("sun.awt", thisModule);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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assertFalse(desktop.isExported("sun.awt"));
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assertFalse(desktop.isExported("sun.awt", thisModule));
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// isOpen
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assertFalse(desktop.isOpen("java.awt"));
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assertFalse(desktop.isOpen("java.awt", thisModule));
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assertTrue(desktop.isOpen("java.awt", desktop));
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assertFalse(desktop.isOpen("sun.awt"));
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assertFalse(desktop.isOpen("sun.awt", thisModule));
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assertTrue(desktop.isOpen("sun.awt", desktop));
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assertFalse(desktop.isOpen("java.wombat"));
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assertFalse(desktop.isOpen("java.wombat", thisModule));
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assertFalse(desktop.isOpen("java.wombat", desktop));
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// addOpens
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try {
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base.addOpens("sun.awt", thisModule);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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assertFalse(desktop.isOpen("sun.awt"));
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assertFalse(desktop.isOpen("sun.awt", thisModule));
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// canUse
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assertTrue(base.canUse(FileSystemProvider.class));
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assertFalse(base.canUse(Thread.class));
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// addUses
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try {
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desktop.addUses(PrintServiceLookup.class);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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try {
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desktop.addUses(Thread.class);
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assertTrue(false);
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} catch (IllegalCallerException expected) { }
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assertFalse(desktop.canUse(Thread.class));
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}
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}
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