| /* | |
| * 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.*; | |
| @Test | |
| 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() | |
| .newModuleBuilder(mn, false, Set.of()); | |
| } | |
| /** | |
| * Exercise ModuleLayer.empty() | |
| */ | |
| public void testEmpty() { | |
| ModuleLayer emptyLayer = ModuleLayer.empty(); | |
| assertTrue(emptyLayer.parents().isEmpty()); | |
| assertTrue(emptyLayer.configuration() == Configuration.empty()); | |
| assertTrue(emptyLayer.modules().isEmpty()); | |
| assertFalse(emptyLayer.findModule("java.base").isPresent()); | |
| try { | |
| emptyLayer.findLoader("java.base"); | |
| assertTrue(false); | |
| } catch (IllegalArgumentException expected) { } | |
| } | |
| /** | |
| * Exercise ModuleLayer.boot() | |
| */ | |
| public void testBoot() { | |
| ModuleLayer bootLayer = ModuleLayer.boot(); | |
| // configuration | |
| Configuration cf = bootLayer.configuration(); | |
| assertTrue(cf.findModule("java.base").get() | |
| .reference() | |
| .descriptor() | |
| .exports() | |
| .stream().anyMatch(e -> (e.source().equals("java.lang") | |
| && !e.isQualified()))); | |
| // modules | |
| Set<Module> modules = bootLayer.modules(); | |
| assertTrue(modules.contains(Object.class.getModule())); | |
| int count = (int) modules.stream().map(Module::getName).count(); | |
| assertEquals(count, modules.size()); // module names are unique | |
| // findModule | |
| Module base = Object.class.getModule(); | |
| assertTrue(bootLayer.findModule("java.base").get() == base); | |
| assertTrue(base.getLayer() == bootLayer); | |
| // findLoader | |
| assertTrue(bootLayer.findLoader("java.base") == null); | |
| // parents | |
| assertTrue(bootLayer.parents().size() == 1); | |
| assertTrue(bootLayer.parents().get(0) == ModuleLayer.empty()); | |
| } | |
| /** | |
| * Exercise defineModules, created with empty layer as parent | |
| */ | |
| public void testLayerOnEmpty() { | |
| ModuleDescriptor descriptor1 = newBuilder("m1") | |
| .requires("m2") | |
| .exports("p1") | |
| .build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires("m3") | |
| .build(); | |
| ModuleDescriptor descriptor3 = newBuilder("m3") | |
| .build(); | |
| ModuleFinder finder | |
| = ModuleUtils.finderOf(descriptor1, descriptor2, descriptor3); | |
| Configuration cf = resolve(finder, "m1"); | |
| // map each module to its own class loader for this test | |
| ClassLoader loader1 = new ClassLoader() { }; | |
| ClassLoader loader2 = new ClassLoader() { }; | |
| ClassLoader loader3 = new ClassLoader() { }; | |
| Map<String, ClassLoader> map = new HashMap<>(); | |
| map.put("m1", loader1); | |
| map.put("m2", loader2); | |
| map.put("m3", loader3); | |
| ModuleLayer layer = ModuleLayer.empty().defineModules(cf, map::get); | |
| // configuration | |
| assertTrue(layer.configuration() == cf); | |
| assertTrue(layer.configuration().modules().size() == 3); | |
| // modules | |
| Set<Module> modules = layer.modules(); | |
| assertTrue(modules.size() == 3); | |
| Set<String> names = modules.stream() | |
| .map(Module::getName) | |
| .collect(Collectors.toSet()); | |
| assertTrue(names.contains("m1")); | |
| assertTrue(names.contains("m2")); | |
| assertTrue(names.contains("m3")); | |
| // findModule | |
| Module m1 = layer.findModule("m1").get(); | |
| Module m2 = layer.findModule("m2").get(); | |
| Module m3 = layer.findModule("m3").get(); | |
| assertEquals(m1.getName(), "m1"); | |
| assertEquals(m2.getName(), "m2"); | |
| assertEquals(m3.getName(), "m3"); | |
| assertTrue(m1.getDescriptor() == descriptor1); | |
| assertTrue(m2.getDescriptor() == descriptor2); | |
| assertTrue(m3.getDescriptor() == descriptor3); | |
| assertTrue(m1.getLayer() == layer); | |
| assertTrue(m2.getLayer() == layer); | |
| assertTrue(m3.getLayer() == layer); | |
| assertTrue(modules.contains(m1)); | |
| assertTrue(modules.contains(m2)); | |
| assertTrue(modules.contains(m3)); | |
| assertFalse(layer.findModule("godot").isPresent()); | |
| // findLoader | |
| assertTrue(layer.findLoader("m1") == loader1); | |
| assertTrue(layer.findLoader("m2") == loader2); | |
| assertTrue(layer.findLoader("m3") == loader3); | |
| try { | |
| ClassLoader loader = layer.findLoader("godot"); | |
| assertTrue(false); | |
| } catch (IllegalArgumentException ignore) { } | |
| // parents | |
| assertTrue(layer.parents().size() == 1); | |
| assertTrue(layer.parents().get(0) == ModuleLayer.empty()); | |
| } | |
| /** | |
| * Exercise defineModules, created with boot layer as parent | |
| */ | |
| public void testLayerOnBoot() { | |
| ModuleDescriptor descriptor1 = newBuilder("m1") | |
| .requires("m2") | |
| .requires("java.base") | |
| .exports("p1") | |
| .build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires("java.base") | |
| .build(); | |
| ModuleFinder finder | |
| = ModuleUtils.finderOf(descriptor1, descriptor2); | |
| Configuration parent = ModuleLayer.boot().configuration(); | |
| Configuration cf = resolve(parent, finder, "m1"); | |
| ClassLoader loader = new ClassLoader() { }; | |
| ModuleLayer layer = ModuleLayer.boot().defineModules(cf, mn -> loader); | |
| // configuration | |
| assertTrue(layer.configuration() == cf); | |
| assertTrue(layer.configuration().modules().size() == 2); | |
| // modules | |
| Set<Module> modules = layer.modules(); | |
| assertTrue(modules.size() == 2); | |
| Set<String> names = modules.stream() | |
| .map(Module::getName) | |
| .collect(Collectors.toSet()); | |
| assertTrue(names.contains("m1")); | |
| assertTrue(names.contains("m2")); | |
| // findModule | |
| Module m1 = layer.findModule("m1").get(); | |
| Module m2 = layer.findModule("m2").get(); | |
| assertEquals(m1.getName(), "m1"); | |
| assertEquals(m2.getName(), "m2"); | |
| assertTrue(m1.getDescriptor() == descriptor1); | |
| assertTrue(m2.getDescriptor() == descriptor2); | |
| assertTrue(m1.getLayer() == layer); | |
| assertTrue(m2.getLayer() == layer); | |
| assertTrue(modules.contains(m1)); | |
| assertTrue(modules.contains(m2)); | |
| assertTrue(layer.findModule("java.base").get() == Object.class.getModule()); | |
| assertFalse(layer.findModule("godot").isPresent()); | |
| // findLoader | |
| assertTrue(layer.findLoader("m1") == loader); | |
| assertTrue(layer.findLoader("m2") == loader); | |
| assertTrue(layer.findLoader("java.base") == null); | |
| // parents | |
| assertTrue(layer.parents().size() == 1); | |
| assertTrue(layer.parents().get(0) == ModuleLayer.boot()); | |
| } | |
| /** | |
| * Exercise defineModules with a configuration of two modules that | |
| * have the same module-private package. | |
| */ | |
| public void testPackageContainedInSelfAndOther() { | |
| ModuleDescriptor descriptor1 = newBuilder("m1") | |
| .requires("m2") | |
| .packages(Set.of("p")) | |
| .build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .packages(Set.of("p")) | |
| .build(); | |
| ModuleFinder finder | |
| = ModuleUtils.finderOf(descriptor1, descriptor2); | |
| Configuration cf = resolve(finder, "m1"); | |
| assertTrue(cf.modules().size() == 2); | |
| // one loader per module, should be okay | |
| ModuleLayer.empty().defineModules(cf, mn -> new ClassLoader() { }); | |
| // same class loader | |
| try { | |
| ClassLoader loader = new ClassLoader() { }; | |
| ModuleLayer.empty().defineModules(cf, mn -> loader); | |
| assertTrue(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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1") | |
| .requires("m2") | |
| .build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .exports("p", Set.of("m1")) | |
| .build(); | |
| // m3 reads m4, m4 exports p to m3 | |
| ModuleDescriptor descriptor3 = newBuilder("m3") | |
| .requires("m4") | |
| .build(); | |
| ModuleDescriptor descriptor4 = newBuilder("m4") | |
| .exports("p", Set.of("m3")) | |
| .build(); | |
| ModuleFinder finder | |
| = ModuleUtils.finderOf(descriptor1, | |
| descriptor2, | |
| descriptor3, | |
| descriptor4); | |
| Configuration cf = resolve(finder, "m1", "m3"); | |
| assertTrue(cf.modules().size() == 4); | |
| // one loader per module | |
| ModuleLayer.empty().defineModules(cf, mn -> new ClassLoader() { }); | |
| // m1 & m2 in one loader, m3 & m4 in another loader | |
| ClassLoader loader1 = new ClassLoader() { }; | |
| ClassLoader loader2 = new ClassLoader() { }; | |
| Map<String, ClassLoader> map = new HashMap<>(); | |
| map.put("m1", loader1); | |
| map.put("m2", loader1); | |
| map.put("m3", loader2); | |
| map.put("m4", loader2); | |
| ModuleLayer.empty().defineModules(cf, map::get); | |
| // same loader | |
| try { | |
| ClassLoader loader = new ClassLoader() { }; | |
| ModuleLayer.empty().defineModules(cf, mn -> loader); | |
| assertTrue(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 | |
| ModuleDescriptor base = Object.class.getModule().getDescriptor(); | |
| assertTrue(base.packages().contains("sun.launcher")); | |
| ModuleDescriptor descriptor = newBuilder("m1") | |
| .requires("java.base") | |
| .packages(Set.of("sun.launcher")) | |
| .build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); | |
| Configuration parent = ModuleLayer.boot().configuration(); | |
| Configuration cf = parent.resolve(finder, ModuleFinder.of(), Set.of("m1")); | |
| assertTrue(cf.modules().size() == 1); | |
| ClassLoader loader = new ClassLoader() { }; | |
| ModuleLayer layer = ModuleLayer.boot().defineModules(cf, mn -> loader); | |
| assertTrue(layer.modules().size() == 1); | |
| } | |
| /** | |
| * 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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1") | |
| .build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") | |
| .build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1, descriptor2); | |
| Configuration cf1 = resolve(finder1, "m2"); | |
| ClassLoader cl1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> cl1); | |
| // cf2: m3, m3 requires m2 | |
| ModuleDescriptor descriptor3 = newBuilder("m3") | |
| .requires("m2") | |
| .build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor3); | |
| Configuration cf2 = resolve(cf1, finder2, "m3"); | |
| ClassLoader cl2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> cl2); | |
| assertTrue(layer1.parents().size() == 1); | |
| assertTrue(layer1.parents().get(0) == ModuleLayer.empty()); | |
| assertTrue(layer2.parents().size() == 1); | |
| assertTrue(layer2.parents().get(0) == layer1); | |
| Module m1 = layer2.findModule("m1").get(); | |
| Module m2 = layer2.findModule("m2").get(); | |
| Module m3 = layer2.findModule("m3").get(); | |
| assertTrue(m1.getLayer() == layer1); | |
| assertTrue(m2.getLayer() == layer1); | |
| assertTrue(m3.getLayer() == layer2); | |
| assertTrue(m1.getClassLoader() == cl1); | |
| assertTrue(m2.getClassLoader() == cl1); | |
| assertTrue(m3.getClassLoader() == cl2); | |
| assertTrue(m1.canRead(m1)); | |
| assertFalse(m1.canRead(m2)); | |
| assertFalse(m1.canRead(m3)); | |
| assertTrue(m2.canRead(m1)); | |
| assertTrue(m2.canRead(m2)); | |
| assertFalse(m2.canRead(m3)); | |
| assertTrue(m3.canRead(m1)); | |
| assertTrue(m3.canRead(m2)); | |
| assertTrue(m3.canRead(m3)); | |
| } | |
| /** | |
| * 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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1").build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1); | |
| Configuration cf1 = resolve(finder1, "m1"); | |
| ClassLoader cl1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> cl1); | |
| // cf2: m2, m3: m2 requires transitive m1, m3 requires m2 | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") | |
| .build(); | |
| ModuleDescriptor descriptor3 = newBuilder("m3") | |
| .requires("m2") | |
| .build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor2, descriptor3); | |
| Configuration cf2 = resolve(cf1, finder2, "m3"); | |
| ClassLoader cl2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> cl2); | |
| assertTrue(layer1.parents().size() == 1); | |
| assertTrue(layer1.parents().get(0) == ModuleLayer.empty()); | |
| assertTrue(layer2.parents().size() == 1); | |
| assertTrue(layer2.parents().get(0) == layer1); | |
| Module m1 = layer2.findModule("m1").get(); | |
| Module m2 = layer2.findModule("m2").get(); | |
| Module m3 = layer2.findModule("m3").get(); | |
| assertTrue(m1.getLayer() == layer1); | |
| assertTrue(m2.getLayer() == layer2); | |
| assertTrue(m3.getLayer() == layer2); | |
| assertTrue(m1.canRead(m1)); | |
| assertFalse(m1.canRead(m2)); | |
| assertFalse(m1.canRead(m3)); | |
| assertTrue(m2.canRead(m1)); | |
| assertTrue(m2.canRead(m2)); | |
| assertFalse(m2.canRead(m3)); | |
| assertTrue(m3.canRead(m1)); | |
| assertTrue(m3.canRead(m2)); | |
| assertTrue(m3.canRead(m3)); | |
| } | |
| /** | |
| * 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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1").build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1); | |
| Configuration cf1 = resolve(finder1, "m1"); | |
| ClassLoader cl1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> cl1); | |
| // cf2: m2 requires transitive m1 | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") | |
| .build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor2); | |
| Configuration cf2 = resolve(cf1, finder2, "m2"); | |
| ClassLoader cl2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> cl2); | |
| // cf3: m3 requires m2 | |
| ModuleDescriptor descriptor3 = newBuilder("m3") | |
| .requires("m2") | |
| .build(); | |
| ModuleFinder finder3 = ModuleUtils.finderOf(descriptor3); | |
| Configuration cf3 = resolve(cf2, finder3, "m3"); | |
| ClassLoader cl3 = new ClassLoader() { }; | |
| ModuleLayer layer3 = layer2.defineModules(cf3, mn -> cl3); | |
| assertTrue(layer1.parents().size() == 1); | |
| assertTrue(layer1.parents().get(0) == ModuleLayer.empty()); | |
| assertTrue(layer2.parents().size() == 1); | |
| assertTrue(layer2.parents().get(0) == layer1); | |
| assertTrue(layer3.parents().size() == 1); | |
| assertTrue(layer3.parents().get(0) == layer2); | |
| Module m1 = layer3.findModule("m1").get(); | |
| Module m2 = layer3.findModule("m2").get(); | |
| Module m3 = layer3.findModule("m3").get(); | |
| assertTrue(m1.getLayer() == layer1); | |
| assertTrue(m2.getLayer() == layer2); | |
| assertTrue(m3.getLayer() == layer3); | |
| assertTrue(m1.canRead(m1)); | |
| assertFalse(m1.canRead(m2)); | |
| assertFalse(m1.canRead(m3)); | |
| assertTrue(m2.canRead(m1)); | |
| assertTrue(m2.canRead(m2)); | |
| assertFalse(m2.canRead(m3)); | |
| assertTrue(m3.canRead(m1)); | |
| assertTrue(m3.canRead(m2)); | |
| assertTrue(m3.canRead(m3)); | |
| } | |
| /** | |
| * 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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1") | |
| .build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") | |
| .build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1, descriptor2); | |
| Configuration cf1 = resolve(finder1, "m2"); | |
| ClassLoader cl1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> cl1); | |
| // cf2: m3 requires transitive m2, m4 requires m3 | |
| ModuleDescriptor descriptor3 = newBuilder("m3") | |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m2") | |
| .build(); | |
| ModuleDescriptor descriptor4 = newBuilder("m4") | |
| .requires("m3") | |
| .build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor3, descriptor4); | |
| Configuration cf2 = resolve(cf1, finder2, "m3", "m4"); | |
| ClassLoader cl2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> cl2); | |
| assertTrue(layer1.parents().size() == 1); | |
| assertTrue(layer1.parents().get(0) == ModuleLayer.empty()); | |
| assertTrue(layer2.parents().size() == 1); | |
| assertTrue(layer2.parents().get(0) == layer1); | |
| Module m1 = layer2.findModule("m1").get(); | |
| Module m2 = layer2.findModule("m2").get(); | |
| Module m3 = layer2.findModule("m3").get(); | |
| Module m4 = layer2.findModule("m4").get(); | |
| assertTrue(m1.getLayer() == layer1); | |
| assertTrue(m2.getLayer() == layer1); | |
| assertTrue(m3.getLayer() == layer2); | |
| assertTrue(m4.getLayer() == layer2); | |
| assertTrue(m1.canRead(m1)); | |
| assertFalse(m1.canRead(m2)); | |
| assertFalse(m1.canRead(m3)); | |
| assertFalse(m1.canRead(m4)); | |
| assertTrue(m2.canRead(m1)); | |
| assertTrue(m2.canRead(m2)); | |
| assertFalse(m1.canRead(m3)); | |
| assertFalse(m1.canRead(m4)); | |
| assertTrue(m3.canRead(m1)); | |
| assertTrue(m3.canRead(m2)); | |
| assertTrue(m3.canRead(m3)); | |
| assertFalse(m3.canRead(m4)); | |
| assertTrue(m4.canRead(m1)); | |
| assertTrue(m4.canRead(m2)); | |
| assertTrue(m4.canRead(m3)); | |
| assertTrue(m4.canRead(m4)); | |
| } | |
| /** | |
| * 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() { | |
| ModuleDescriptor descriptor1 = newBuilder("m1"). | |
| exports("p", Set.of("m2")) | |
| .build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1, descriptor2); | |
| Configuration cf = resolve(finder1, "m1", "m2"); | |
| ClassLoader cl = new ClassLoader() { }; | |
| ModuleLayer layer = ModuleLayer.empty().defineModules(cf, mn -> cl); | |
| assertTrue(layer.modules().size() == 2); | |
| Module m1 = layer.findModule("m1").get(); | |
| Module m2 = layer.findModule("m2").get(); | |
| // check m1 exports p to m2 | |
| assertFalse(m1.isExported("p")); | |
| assertTrue(m1.isExported("p", m2)); | |
| assertFalse(m1.isOpen("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() { | |
| ModuleDescriptor descriptor1 = newBuilder("m1") | |
| .exports("p", Set.of("m2")) | |
| .build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires("m1") | |
| .build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1, descriptor2); | |
| Configuration cf = resolve(finder1, "m2"); | |
| ClassLoader cl = new ClassLoader() { }; | |
| ModuleLayer layer = ModuleLayer.empty().defineModules(cf, mn -> cl); | |
| assertTrue(layer.modules().size() == 2); | |
| Module m1 = layer.findModule("m1").get(); | |
| Module m2 = layer.findModule("m2").get(); | |
| // check m1 exports p to m2 | |
| assertFalse(m1.isExported("p")); | |
| assertTrue(m1.isExported("p", m2)); | |
| assertFalse(m1.isOpen("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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1").build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1); | |
| Configuration cf1 = resolve(finder1, "m1"); | |
| ClassLoader cl1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> cl1); | |
| assertTrue(layer1.modules().size() == 1); | |
| // create layer2 with m2 | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .exports("p", Set.of("m1")) | |
| .build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor2); | |
| Configuration cf2 = resolve(cf1, finder2, "m2"); | |
| ClassLoader cl2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> cl2); | |
| assertTrue(layer2.modules().size() == 1); | |
| Module m1 = layer1.findModule("m1").get(); | |
| Module m2 = layer2.findModule("m2").get(); | |
| // check m2 exports p to layer1/m1 | |
| assertFalse(m2.isExported("p")); | |
| assertTrue(m2.isExported("p", m1)); | |
| assertFalse(m2.isOpen("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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1").build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1); | |
| Configuration cf1 = resolve(finder1, "m1"); | |
| ClassLoader cl1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> cl1); | |
| assertTrue(layer1.modules().size() == 1); | |
| // create layer2 with m2 | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires("m1") | |
| .exports("p", Set.of("m1")) | |
| .build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor2); | |
| Configuration cf2 = resolve(cf1, finder2, "m2"); | |
| ClassLoader cl2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> cl2); | |
| assertTrue(layer2.modules().size() == 1); | |
| Module m1 = layer1.findModule("m1").get(); | |
| Module m2 = layer2.findModule("m2").get(); | |
| // check m2 exports p to layer1/m1 | |
| assertFalse(m2.isExported("p")); | |
| assertTrue(m2.isExported("p", m1)); | |
| assertFalse(m2.isOpen("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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1").build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1); | |
| Configuration cf1 = resolve(finder1, "m1"); | |
| ClassLoader cl1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> cl1); | |
| assertTrue(layer1.modules().size() == 1); | |
| // create layer2 with m1 and m2 | |
| ModuleDescriptor descriptor2 = newBuilder("m2").exports("p", Set.of("m1")).build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor1, descriptor2); | |
| Configuration cf2 = resolve(cf1, finder2, "m1", "m2"); | |
| ClassLoader cl2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> cl2); | |
| assertTrue(layer2.modules().size() == 2); | |
| Module m1_v1 = layer1.findModule("m1").get(); | |
| Module m1_v2 = layer2.findModule("m1").get(); | |
| Module m2 = layer2.findModule("m2").get(); | |
| // check m2 exports p to layer2/m2 | |
| assertFalse(m2.isExported("p")); | |
| assertTrue(m2.isExported("p", m1_v2)); | |
| assertFalse(m2.isExported("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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1").build(); | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") | |
| .build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1, descriptor2); | |
| Configuration cf1 = resolve(finder1, "m2"); | |
| ClassLoader loader1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> loader1); | |
| assertTrue(layer1.modules().size() == 2); | |
| // create layer2 with m1 and m3 | |
| ModuleDescriptor descriptor3 = newBuilder("m3") | |
| .requires("m2") | |
| .exports("p", Set.of("m1")) | |
| .build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor1, descriptor3); | |
| Configuration cf2 = resolve(cf1, finder2, "m1", "m3"); | |
| ClassLoader loader2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> loader2); | |
| assertTrue(layer2.modules().size() == 2); | |
| Module m1_v1 = layer1.findModule("m1").get(); | |
| Module m2 = layer1.findModule("m2").get(); | |
| Module m1_v2 = layer2.findModule("m1").get(); | |
| Module m3 = layer2.findModule("m3").get(); | |
| assertTrue(m3.canRead(m1_v1)); | |
| assertFalse(m3.canRead(m1_v2)); | |
| assertFalse(m3.isExported("p")); | |
| assertTrue(m3.isExported("p", m1_v1)); | |
| assertFalse(m3.isExported("p", m1_v2)); | |
| assertFalse(m3.isExported("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 | |
| ModuleDescriptor descriptor1 = newBuilder("m1").build(); | |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1); | |
| Configuration cf1 = resolve(finder1, "m1"); | |
| ClassLoader cl1 = new ClassLoader() { }; | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModules(cf1, mn -> cl1); | |
| assertTrue(layer1.modules().size() == 1); | |
| // create layer2 with m2 | |
| ModuleDescriptor descriptor2 = newBuilder("m2") | |
| .exports("p", Set.of("m3")) | |
| .build(); | |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor2); | |
| Configuration cf2 = resolve(cf1, finder2, "m2"); | |
| ClassLoader cl2 = new ClassLoader() { }; | |
| ModuleLayer layer2 = layer1.defineModules(cf2, mn -> cl2); | |
| assertTrue(layer2.modules().size() == 1); | |
| Module m1 = layer1.findModule("m1").get(); | |
| Module m2 = layer2.findModule("m2").get(); | |
| // check m2 does not export p to anyone | |
| assertFalse(m2.isExported("p")); | |
| assertFalse(m2.isExported("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. | |
| */ | |
| @Test(expectedExceptions = { LayerInstantiationException.class }) | |
| public void testModuleAlreadyDefinedToLoader() { | |
| ModuleDescriptor md = newBuilder("m") | |
| .requires("java.base") | |
| .build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(md); | |
| Configuration parent = ModuleLayer.boot().configuration(); | |
| Configuration cf = parent.resolve(finder, ModuleFinder.of(), Set.of("m")); | |
| ClassLoader loader = new ClassLoader() { }; | |
| ModuleLayer.boot().defineModules(cf, mn -> loader); | |
| // should throw LayerInstantiationException as m1 already defined to loader | |
| ModuleLayer.boot().defineModules(cf, mn -> 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}. | |
| */ | |
| @Test(expectedExceptions = { LayerInstantiationException.class }) | |
| public void testPackageAlreadyInNamedModule() { | |
| ModuleDescriptor md1 = newBuilder("m1") | |
| .packages(Set.of("p")) | |
| .requires("java.base") | |
| .build(); | |
| ModuleDescriptor md2 = newBuilder("m2") | |
| .packages(Set.of("p")) | |
| .requires("java.base") | |
| .build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(md1, md2); | |
| ClassLoader loader = new ClassLoader() { }; | |
| // define m1 containing package p to class loader | |
| Configuration parent = ModuleLayer.boot().configuration(); | |
| Configuration cf1 = parent.resolve(finder, ModuleFinder.of(), Set.of("m1")); | |
| ModuleLayer layer1 = ModuleLayer.boot().defineModules(cf1, mn -> loader); | |
| // attempt to define m2 containing package p to class loader | |
| Configuration cf2 = parent.resolve(finder, ModuleFinder.of(), Set.of("m2")); | |
| // should throw exception because p already in m1 | |
| ModuleLayer layer2 = ModuleLayer.boot().defineModules(cf2, mn -> loader); | |
| } | |
| /** | |
| * 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. | |
| */ | |
| @Test(expectedExceptions = { LayerInstantiationException.class }) | |
| public void testPackageAlreadyInUnnamedModule() throws Exception { | |
| Class<?> c = layertest.Test.class; | |
| assertFalse(c.getModule().isNamed()); // in unnamed module | |
| ModuleDescriptor md = newBuilder("m") | |
| .packages(Set.of(c.getPackageName())) | |
| .requires("java.base") | |
| .build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(md); | |
| Configuration parent = ModuleLayer.boot().configuration(); | |
| Configuration cf = parent.resolve(finder, ModuleFinder.of(), Set.of("m")); | |
| ModuleLayer.boot().defineModules(cf, mn -> c.getClassLoader()); | |
| } | |
| /** | |
| * Attempt to create a layer with a module named "java.base". | |
| */ | |
| public void testLayerWithJavaBase() { | |
| ModuleDescriptor descriptor = newBuilder("java.base") | |
| .exports("java.lang") | |
| .build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); | |
| Configuration cf = ModuleLayer.boot() | |
| .configuration() | |
| .resolve(finder, ModuleFinder.of(), Set.of("java.base")); | |
| assertTrue(cf.modules().size() == 1); | |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); | |
| try { | |
| ModuleLayer.boot().defineModules(cf, mn -> new ClassLoader() { }); | |
| assertTrue(false); | |
| } catch (LayerInstantiationException e) { } | |
| try { | |
| ModuleLayer.boot().defineModulesWithOneLoader(cf, scl); | |
| assertTrue(false); | |
| } catch (LayerInstantiationException e) { } | |
| try { | |
| ModuleLayer.boot().defineModulesWithManyLoaders(cf, scl); | |
| assertTrue(false); | |
| } catch (LayerInstantiationException e) { } | |
| } | |
| @DataProvider(name = "javaPackages") | |
| public Object[][] javaPackages() { | |
| return new Object[][] { { "m1", "java" }, { "m2", "java.x" } }; | |
| } | |
| /** | |
| * Attempt to create a layer with a module containing a "java" package. | |
| */ | |
| @Test(dataProvider = "javaPackages") | |
| public void testLayerWithJavaPackage(String mn, String pn) { | |
| ModuleDescriptor descriptor = newBuilder(mn).packages(Set.of(pn)).build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); | |
| Configuration cf = ModuleLayer.boot() | |
| .configuration() | |
| .resolve(finder, ModuleFinder.of(), Set.of(mn)); | |
| assertTrue(cf.modules().size() == 1); | |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); | |
| try { | |
| ModuleLayer.boot().defineModules(cf, _mn -> new ClassLoader() { }); | |
| assertTrue(false); | |
| } catch (LayerInstantiationException e) { } | |
| try { | |
| ModuleLayer.boot().defineModulesWithOneLoader(cf, scl); | |
| assertTrue(false); | |
| } catch (LayerInstantiationException e) { } | |
| try { | |
| ModuleLayer.boot().defineModulesWithManyLoaders(cf, scl); | |
| assertTrue(false); | |
| } catch (LayerInstantiationException e) { } | |
| } | |
| /** | |
| * Attempt to create a layer with a module defined to the boot loader | |
| */ | |
| @Test(expectedExceptions = { LayerInstantiationException.class }) | |
| public void testLayerWithBootLoader() { | |
| ModuleDescriptor descriptor = newBuilder("m1").build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); | |
| Configuration cf = ModuleLayer.boot() | |
| .configuration() | |
| .resolve(finder, ModuleFinder.of(), Set.of("m1")); | |
| assertTrue(cf.modules().size() == 1); | |
| ModuleLayer.boot().defineModules(cf, mn -> null ); | |
| } | |
| /** | |
| * Attempt to create a layer with a module defined to the platform loader | |
| */ | |
| @Test(expectedExceptions = { LayerInstantiationException.class }) | |
| public void testLayerWithPlatformLoader() { | |
| ModuleDescriptor descriptor = newBuilder("m1").build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); | |
| Configuration cf = ModuleLayer.boot() | |
| .configuration() | |
| .resolve(finder, ModuleFinder.of(), Set.of("m1")); | |
| assertTrue(cf.modules().size() == 1); | |
| ClassLoader cl = ClassLoader.getPlatformClassLoader(); | |
| ModuleLayer.boot().defineModules(cf, mn -> cl ); | |
| } | |
| /** | |
| * Parent of configuration != configuration of parent layer | |
| */ | |
| @Test(expectedExceptions = { IllegalArgumentException.class }) | |
| public void testIncorrectParent1() { | |
| ModuleDescriptor descriptor1 = newBuilder("m1") | |
| .requires("java.base") | |
| .build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor1); | |
| Configuration parent = ModuleLayer.boot().configuration(); | |
| Configuration cf = parent.resolve(finder, ModuleFinder.of(), Set.of("m1")); | |
| ClassLoader loader = new ClassLoader() { }; | |
| ModuleLayer.empty().defineModules(cf, mn -> loader); | |
| } | |
| /** | |
| * Parent of configuration != configuration of parent layer | |
| */ | |
| @Test(expectedExceptions = { IllegalArgumentException.class }) | |
| public void testIncorrectParent2() { | |
| ModuleDescriptor descriptor1 = newBuilder("m1").build(); | |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor1); | |
| Configuration cf = resolve(finder, "m1"); | |
| ClassLoader loader = new ClassLoader() { }; | |
| ModuleLayer.boot().defineModules(cf, mn -> loader); | |
| } | |
| // null handling | |
| @Test(expectedExceptions = { NullPointerException.class }) | |
| public void testCreateWithNull1() { | |
| ClassLoader loader = new ClassLoader() { }; | |
| ModuleLayer.empty().defineModules(null, mn -> loader); | |
| } | |
| @Test(expectedExceptions = { NullPointerException.class }) | |
| public void testCreateWithNull2() { | |
| Configuration cf = resolve(ModuleLayer.boot().configuration(), ModuleFinder.of()); | |
| ModuleLayer.boot().defineModules(cf, null); | |
| } | |
| @Test(expectedExceptions = { NullPointerException.class }) | |
| public void testCreateWithNull3() { | |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); | |
| ModuleLayer.empty().defineModulesWithOneLoader(null, scl); | |
| } | |
| @Test(expectedExceptions = { NullPointerException.class }) | |
| public void testCreateWithNull4() { | |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); | |
| ModuleLayer.empty().defineModulesWithManyLoaders(null, scl); | |
| } | |
| @Test(expectedExceptions = { NullPointerException.class }) | |
| public void testFindModuleWithNull() { | |
| ModuleLayer.boot().findModule(null); | |
| } | |
| @Test(expectedExceptions = { NullPointerException.class }) | |
| public void testFindLoaderWithNull() { | |
| ModuleLayer.boot().findLoader(null); | |
| } | |
| // unmodifiable collections | |
| @DataProvider(name = "layers") | |
| public Object[][] layers() { | |
| Configuration cf = resolve(ModuleFinder.of()); | |
| ModuleLayer layer1 = ModuleLayer.empty().defineModulesWithOneLoader(cf, null); | |
| ModuleLayer layer2 = ModuleLayer.empty().defineModulesWithManyLoaders(cf, null); | |
| ModuleLayer layer3 = ModuleLayer.empty().defineModules(cf, mn -> null); | |
| // empty, boot, and custom layers | |
| return new Object[][] { | |
| { ModuleLayer.empty(), null }, | |
| { ModuleLayer.boot(), null }, | |
| { layer1, null }, | |
| { layer2, null }, | |
| { layer3, null }, | |
| }; | |
| } | |
| @Test(dataProvider = "layers", | |
| expectedExceptions = { UnsupportedOperationException.class }) | |
| public void testUnmodifiableParents1(ModuleLayer layer, Object ignore) { | |
| layer.parents().add(ModuleLayer.empty()); | |
| } | |
| @Test(dataProvider = "layers", | |
| expectedExceptions = { UnsupportedOperationException.class }) | |
| public void testUnmodifiableParents2(ModuleLayer layer, Object ignore) { | |
| layer.parents().remove(ModuleLayer.empty()); | |
| } | |
| @Test(dataProvider = "layers", | |
| expectedExceptions = { UnsupportedOperationException.class }) | |
| public void testUnmodifiableModules1(ModuleLayer layer, Object ignore) { | |
| layer.modules().add(Object.class.getModule()); | |
| } | |
| @Test(dataProvider = "layers", | |
| expectedExceptions = { UnsupportedOperationException.class }) | |
| public void testUnmodifiableModules2(ModuleLayer layer, Object ignore) { | |
| layer.modules().remove(Object.class.getModule()); | |
| } | |
| /** | |
| * Resolve the given modules, by name, and returns the resulting | |
| * Configuration. | |
| */ | |
| private static Configuration resolve(Configuration cf, | |
| ModuleFinder finder, | |
| String... roots) { | |
| return cf.resolve(finder, ModuleFinder.of(), Set.of(roots)); | |
| } | |
| private static Configuration resolve(ModuleFinder finder, | |
| String... roots) { | |
| return resolve(Configuration.empty(), finder, roots); | |
| } | |
| } |