Quelle BasicLayerTest.java
Sprache: JAVA
/* * Copyright (c) 2014, 2020, 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 * questions. /** * @test * @library /test/lib * @modules java.base/jdk.internal.access * @build BasicLayerTest * jdk.test.lib.util.ModuleUtils * @compile layertest/Test.java * @run testng BasicLayerTest * @summary Basic tests for java.lang.ModuleLayer import java.lang.module.Configuration;import java.lang.module.ModuleDescriptor;import java.lang.module.ModuleDescriptor.Requires;import java.lang.module.ModuleFinder;import java.util.HashMap;import java.util.Map;import java.util.Set;import java.util.stream.Collectors;import jdk.test.lib.util.ModuleUtils;import jdk.internal.access.SharedSecrets;import org.testng.annotations.DataProvider;import org.testng.annotations.Test;import static org.testng.Assert .*;public class BasicLayerTest {/** * Creates a "non-strict" builder for building a module. This allows the * test the create ModuleDescriptor objects that do not require java.base. private static ModuleDescriptor.Builder newBuilder(String mn) {return SharedSecrets.getJavaLangModuleAccess()false , Set.of());/** * Exercise ModuleLayer.empty() public void testEmpty() {"java.base" ).isPresent());try {"java.base" );false );catch (IllegalArgumentException expected) { }/** * Exercise ModuleLayer.boot() public void testBoot() {// configuration "java.base" ).get()"java.lang" )// modules class .getModule()));int count = (int ) modules.stream().map(Module::getName).count();// module names are unique // findModule class .getModule();"java.base" ).get() == base);// findLoader "java.base" ) == null );// parents /** * Exercise defineModules, created with empty layer as parent public void testLayerOnEmpty() {"m1" )"m2" )"p1" )"m2" )"m3" )"m3" )"m1" );// map each module to its own class loader for this test new ClassLoader() { };new ClassLoader() { };new ClassLoader() { };new HashMap<>();"m1" , loader1);"m2" , loader2);"m3" , loader3);// configuration // modules "m1" ));"m2" ));"m3" ));// findModule "m1" ).get();"m2" ).get();"m3" ).get();"m1" );"m2" );"m3" );"godot" ).isPresent());// findLoader "m1" ) == loader1);"m2" ) == loader2);"m3" ) == loader3);try {"godot" );false );catch (IllegalArgumentException ignore) { }// parents /** * Exercise defineModules, created with boot layer as parent public void testLayerOnBoot() {"m1" )"m2" )"java.base" )"p1" )"m2" )"java.base" )"m1" );new ClassLoader() { };// configuration // modules "m1" ));"m2" ));// findModule "m1" ).get();"m2" ).get();"m1" );"m2" );"java.base" ).get() == Object.class .getModule());"godot" ).isPresent());// findLoader "m1" ) == loader);"m2" ) == loader);"java.base" ) == null );// parents /** * Exercise defineModules with a configuration of two modules that * have the same module-private package. public void testPackageContainedInSelfAndOther() {"m1" )"m2" )"p" ))"m2" )"p" ))"m1" );// one loader per module, should be okay new ClassLoader() { });// same class loader try {new ClassLoader() { };false );catch (LayerInstantiationException expected) { }/** * Exercise defineModules with a configuration that is a partitioned * graph. The same package is exported in both partitions. public void testSameExportInPartitionedGraph() {// m1 reads m2, m2 exports p to m1 "m1" )"m2" )"m2" )"p" , Set.of("m1" ))// m3 reads m4, m4 exports p to m3 "m3" )"m4" )"m4" )"p" , Set.of("m3" ))"m1" , "m3" );// one loader per module new ClassLoader() { });// m1 & m2 in one loader, m3 & m4 in another loader new ClassLoader() { };new ClassLoader() { };new HashMap<>();"m1" , loader1);"m2" , loader1);"m3" , loader2);"m4" , loader2);// same loader try {new ClassLoader() { };false );catch (LayerInstantiationException expected) { }/** * Exercise defineModules with a configuration with a module that * contains a package that is the same name as a non-exported package in * a parent layer. public void testContainsSamePackageAsBootLayer() {// check assumption that java.base contains sun.launcher class .getModule().getDescriptor();"sun.launcher" ));"m1" )"java.base" )"sun.launcher" ))"m1" ));new ClassLoader() { };/** * Test layers with implied readability. * * The test consists of three configurations: * - Configuration/layer1: m1, m2 requires transitive m1 * - Configuration/layer2: m3 requires m1 public void testImpliedReadabilityWithLayers1() {// cf1: m1 and m2, m2 requires transitive m1 "m1" )"m2" )"m1" )"m2" );new ClassLoader() { };// cf2: m3, m3 requires m2 "m3" )"m2" )"m3" );new ClassLoader() { };"m1" ).get();"m2" ).get();"m3" ).get();/** * Test layers with implied readability. * * The test consists of three configurations: * - Configuration/layer1: m1 * - Configuration/layer2: m2 requires transitive m3, m3 requires m2 public void testImpliedReadabilityWithLayers2() {// cf1: m1 "m1" ).build();"m1" );new ClassLoader() { };// cf2: m2, m3: m2 requires transitive m1, m3 requires m2 "m2" )"m1" )"m3" )"m2" )"m3" );new ClassLoader() { };"m1" ).get();"m2" ).get();"m3" ).get();/** * Test layers with implied readability. * * The test consists of three configurations: * - Configuration/layer1: m1 * - Configuration/layer2: m2 requires transitive m1 * - Configuration/layer3: m3 requires m1 public void testImpliedReadabilityWithLayers3() {// cf1: m1 "m1" ).build();"m1" );new ClassLoader() { };// cf2: m2 requires transitive m1 "m2" )"m1" )"m2" );new ClassLoader() { };// cf3: m3 requires m2 "m3" )"m2" )"m3" );new ClassLoader() { };"m1" ).get();"m2" ).get();"m3" ).get();/** * Test layers with implied readability. * * The test consists of two configurations: * - Configuration/layer1: m1, m2 requires transitive m1 * - Configuration/layer2: m3 requires transitive m2, m4 requires m3 public void testImpliedReadabilityWithLayers4() {// cf1: m1, m2 requires transitive m1 "m1" )"m2" )"m1" )"m2" );new ClassLoader() { };// cf2: m3 requires transitive m2, m4 requires m3 "m3" )"m2" )"m4" )"m3" )"m3" , "m4" );new ClassLoader() { };"m1" ).get();"m2" ).get();"m3" ).get();"m4" ).get();/** * Test layers with a qualified export. The module exporting the package * does not read the target module. * * m1 { exports p to m2 } * m2 { } public void testQualifiedExports1() {"m1" )."p" , Set.of("m2" ))"m2" )"m1" , "m2" );new ClassLoader() { };"m1" ).get();"m2" ).get();// check m1 exports p to m2 "p" ));"p" , m2));"p" , m2));/** * Test layers with a qualified export. The module exporting the package * reads the target module. * * m1 { exports p to m2; } * m2 { requires m1; } public void testQualifiedExports2() {"m1" )"p" , Set.of("m2" ))"m2" )"m1" )"m2" );new ClassLoader() { };"m1" ).get();"m2" ).get();// check m1 exports p to m2 "p" ));"p" , m2));"p" , m2));/** * Test layers with a qualified export. The module exporting the package * does not read the target module in the parent layer. * * - Configuration/layer1: m1 { } * - Configuration/layer2: m2 { exports p to m1; } public void testQualifiedExports3() {// create layer1 with m1 "m1" ).build();"m1" );new ClassLoader() { };// create layer2 with m2 "m2" )"p" , Set.of("m1" ))"m2" );new ClassLoader() { };"m1" ).get();"m2" ).get();// check m2 exports p to layer1/m1 "p" ));"p" , m1));"p" , m1));/** * Test layers with a qualified export. The module exporting the package * reads the target module in the parent layer. * * - Configuration/layer1: m1 { } * - Configuration/layer2: m2 { requires m1; exports p to m1; } public void testQualifiedExports4() {// create layer1 with m1 "m1" ).build();"m1" );new ClassLoader() { };// create layer2 with m2 "m2" )"m1" )"p" , Set.of("m1" ))"m2" );new ClassLoader() { };"m1" ).get();"m2" ).get();// check m2 exports p to layer1/m1 "p" ));"p" , m1));"p" , m1));/** * Test layers with a qualified export. The module exporting the package * does not read the target module. * * - Configuration/layer1: m1 * - Configuration/layer2: m1, m2 { exports p to m1; } public void testQualifiedExports5() {// create layer1 with m1 "m1" ).build();"m1" );new ClassLoader() { };// create layer2 with m1 and m2 "m2" ).exports("p" , Set.of("m1" )).build();"m1" , "m2" );new ClassLoader() { };"m1" ).get();"m1" ).get();"m2" ).get();// check m2 exports p to layer2/m2 "p" ));"p" , m1_v2));"p" , m1_v1));/** * Test layers with a qualified export. The module exporting the package * reads the target module in the parent layer (due to requires transitive). * * - Configuration/layer1: m1, m2 { requires transitive m1; } * - Configuration/layer2: m1, m3 { requires m2; exports p to m1; } public void testQualifiedExports6() {// create layer1 with m1 and m2 "m1" ).build();"m2" )"m1" )"m2" );new ClassLoader() { };// create layer2 with m1 and m3 "m3" )"m2" )"p" , Set.of("m1" ))"m1" , "m3" );new ClassLoader() { };"m1" ).get();"m2" ).get();"m1" ).get();"m3" ).get();"p" ));"p" , m1_v1));"p" , m1_v2));"p" , m2));/** * Test layers with a qualified export. The target module is not in any layer. * * - Configuration/layer1: m1 { } * - Configuration/layer2: m2 { exports p to m3; } public void testQualifiedExports7() {// create layer1 with m1 "m1" ).build();"m1" );new ClassLoader() { };// create layer2 with m2 "m2" )"p" , Set.of("m3" ))"m2" );new ClassLoader() { };"m1" ).get();"m2" ).get();// check m2 does not export p to anyone "p" ));"p" , m1));/** * Attempt to use defineModules to create a layer with a module defined * to a class loader that already has a module of the same name defined * to the class loader. class })public void testModuleAlreadyDefinedToLoader() {"m" )"java.base" )"m" ));new ClassLoader() { };// should throw LayerInstantiationException as m1 already defined to loader /** * Attempt to use defineModules to create a layer with a module containing * package {@code p} where the class loader already has a module defined * to it containing package {@code p}. class })public void testPackageAlreadyInNamedModule() {"m1" )"p" ))"java.base" )"m2" )"p" ))"java.base" )new ClassLoader() { };// define m1 containing package p to class loader "m1" ));// attempt to define m2 containing package p to class loader "m2" ));// should throw exception because p already in m1 /** * Attempt to use defineModules to create a layer with a module * containing a package in which a type is already loaded by the class * loader. class })public void testPackageAlreadyInUnnamedModule() throws Exception {Class <?> c = layertest.Test.class ;// in unnamed module "m" )"java.base" )"m" ));/** * Attempt to create a layer with a module named "java.base". public void testLayerWithJavaBase() {"java.base" )"java.lang" )"java.base" ));try {new ClassLoader() { });false );catch (LayerInstantiationException e) { }try {false );catch (LayerInstantiationException e) { }try {false );catch (LayerInstantiationException e) { }"javaPackages" )public Object[][] javaPackages() {return new Object[][] { { "m1" , "java" }, { "m2" , "java.x" } };/** * Attempt to create a layer with a module containing a "java" package. "javaPackages" )public void testLayerWithJavaPackage(String mn, String pn) {try {new ClassLoader() { });false );catch (LayerInstantiationException e) { }try {false );catch (LayerInstantiationException e) { }try {false );catch (LayerInstantiationException e) { }/** * Attempt to create a layer with a module defined to the boot loader class })public void testLayerWithBootLoader() {"m1" ).build();"m1" ));null );/** * Attempt to create a layer with a module defined to the platform loader class })public void testLayerWithPlatformLoader() {"m1" ).build();"m1" ));/** * Parent of configuration != configuration of parent layer class })public void testIncorrectParent1() {"m1" )"java.base" )"m1" ));new ClassLoader() { };/** * Parent of configuration != configuration of parent layer class })public void testIncorrectParent2() {"m1" ).build();"m1" );new ClassLoader() { };// null handling class })public void testCreateWithNull1() {new ClassLoader() { };null , mn -> loader);class })public void testCreateWithNull2() {null );class })public void testCreateWithNull3() {null , scl);class })public void testCreateWithNull4() {null , scl);class })public void testFindModuleWithNull() {null );class })public void testFindLoaderWithNull() {null );// unmodifiable collections "layers" )public Object[][] layers() {null );null );null );// empty, boot, and custom layers return new Object[][] {null },null },null },null },null },"layers" ,class })public void testUnmodifiableParents1(ModuleLayer layer, Object ignore) {"layers" ,class })public void testUnmodifiableParents2(ModuleLayer layer, Object ignore) {"layers" ,class })public void testUnmodifiableModules1(ModuleLayer layer, Object ignore) {class .getModule());"layers" ,class })public void testUnmodifiableModules2(ModuleLayer layer, Object ignore) {class .getModule());/** * Resolve the given modules, by name, and returns the resulting * Configuration. private static Configuration resolve(Configuration cf,return cf.resolve(finder, ModuleFinder.of(), Set.of(roots));private static Configuration resolve(ModuleFinder finder,return resolve(Configuration.empty(), finder, roots);quality 86%
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