| /* |
| * Copyright (c) 2014, 2016, 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 /lib/testlibrary |
| * @build BasicLayerTest ModuleUtils |
| * @compile layertest/Test.java |
| * @run testng BasicLayerTest |
| * @summary Basic tests for java.lang.reflect.Layer |
| */ |
| |
| import java.lang.module.Configuration; |
| import java.lang.module.ModuleDescriptor; |
| import java.lang.module.ModuleDescriptor.Requires; |
| import java.lang.module.ModuleFinder; |
| import java.lang.reflect.Layer; |
| import java.lang.reflect.LayerInstantiationException; |
| import java.lang.reflect.Module; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| import org.testng.annotations.Test; |
| import static org.testng.Assert.*; |
| |
| @Test |
| public class BasicLayerTest { |
| |
| /** |
| * Exercise Layer.empty() |
| */ |
| public void testEmpty() { |
| Layer emptyLayer = Layer.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 Layer.boot() |
| */ |
| public void testBoot() { |
| Layer bootLayer = Layer.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) == Layer.empty()); |
| } |
| |
| |
| /** |
| * Exercise Layer defineModules, created with empty layer as parent |
| */ |
| public void testLayerOnEmpty() { |
| ModuleDescriptor descriptor1 |
| = ModuleDescriptor.module("m1") |
| .requires("m2") |
| .exports("p1") |
| .build(); |
| |
| ModuleDescriptor descriptor2 |
| = ModuleDescriptor.module("m2") |
| .requires("m3") |
| .build(); |
| |
| ModuleDescriptor descriptor3 |
| = ModuleDescriptor.module("m3") |
| .build(); |
| |
| ModuleFinder finder |
| = ModuleUtils.finderOf(descriptor1, descriptor2, descriptor3); |
| |
| Configuration cf = resolveRequires(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); |
| |
| Layer layer = Layer.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) == Layer.empty()); |
| } |
| |
| |
| /** |
| * Exercise Layer defineModules, created with boot layer as parent |
| */ |
| public void testLayerOnBoot() { |
| ModuleDescriptor descriptor1 |
| = ModuleDescriptor.module("m1") |
| .requires("m2") |
| .requires("java.base") |
| .exports("p1") |
| .build(); |
| |
| ModuleDescriptor descriptor2 |
| = ModuleDescriptor.module("m2") |
| .requires("java.base") |
| .build(); |
| |
| ModuleFinder finder |
| = ModuleUtils.finderOf(descriptor1, descriptor2); |
| |
| Configuration parent = Layer.boot().configuration(); |
| Configuration cf = resolveRequires(parent, finder, "m1"); |
| |
| ClassLoader loader = new ClassLoader() { }; |
| |
| Layer layer = Layer.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) == Layer.boot()); |
| } |
| |
| |
| /** |
| * Exercise Layer defineModules with a configuration of two modules that |
| * have the same module-private package. |
| */ |
| public void testPackageContainedInSelfAndOther() { |
| ModuleDescriptor descriptor1 |
| = ModuleDescriptor.module("m1") |
| .requires("m2") |
| .contains("p") |
| .build(); |
| |
| ModuleDescriptor descriptor2 |
| = ModuleDescriptor.module("m2") |
| .contains("p") |
| .build(); |
| |
| ModuleFinder finder |
| = ModuleUtils.finderOf(descriptor1, descriptor2); |
| |
| Configuration cf = resolveRequires(finder, "m1"); |
| assertTrue(cf.modules().size() == 2); |
| |
| // one loader per module, should be okay |
| Layer.empty().defineModules(cf, mn -> new ClassLoader() { }); |
| |
| // same class loader |
| try { |
| ClassLoader loader = new ClassLoader() { }; |
| Layer.empty().defineModules(cf, mn -> loader); |
| assertTrue(false); |
| } catch (LayerInstantiationException expected) { } |
| } |
| |
| |
| /** |
| * Exercise Layer 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 |
| = ModuleDescriptor.module("m1") |
| .requires("m2") |
| .build(); |
| ModuleDescriptor descriptor2 |
| = ModuleDescriptor.module("m2") |
| .exports("p", Set.of("m1")) |
| .build(); |
| |
| // m3 reads m4, m4 exports p to m3 |
| ModuleDescriptor descriptor3 |
| = ModuleDescriptor.module("m3") |
| .requires("m4") |
| .build(); |
| ModuleDescriptor descriptor4 |
| = ModuleDescriptor.module("m4") |
| .exports("p", Set.of("m3")) |
| .build(); |
| |
| ModuleFinder finder |
| = ModuleUtils.finderOf(descriptor1, |
| descriptor2, |
| descriptor3, |
| descriptor4); |
| |
| Configuration cf = resolveRequires(finder, "m1", "m3"); |
| assertTrue(cf.modules().size() == 4); |
| |
| // one loader per module |
| Layer.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); |
| Layer.empty().defineModules(cf, map::get); |
| |
| // same loader |
| try { |
| ClassLoader loader = new ClassLoader() { }; |
| Layer.empty().defineModules(cf, mn -> loader); |
| assertTrue(false); |
| } catch (LayerInstantiationException expected) { } |
| } |
| |
| |
| /** |
| * Exercise Layer 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 |
| = ModuleDescriptor.module("m1") |
| .requires("java.base") |
| .contains("sun.launcher") |
| .build(); |
| |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); |
| |
| Configuration parent = Layer.boot().configuration(); |
| Configuration cf = parent.resolveRequires(finder, ModuleFinder.of(), Set.of("m1")); |
| assertTrue(cf.modules().size() == 1); |
| |
| ClassLoader loader = new ClassLoader() { }; |
| Layer layer = Layer.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 |
| = ModuleDescriptor.module("m1") |
| .build(); |
| |
| ModuleDescriptor descriptor2 |
| = ModuleDescriptor.module("m2") |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") |
| .build(); |
| |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1, descriptor2); |
| |
| Configuration cf1 = resolveRequires(finder1, "m2"); |
| |
| ClassLoader cl1 = new ClassLoader() { }; |
| Layer layer1 = Layer.empty().defineModules(cf1, mn -> cl1); |
| |
| |
| // cf2: m3, m3 requires m2 |
| |
| ModuleDescriptor descriptor3 |
| = ModuleDescriptor.module("m3") |
| .requires("m2") |
| .build(); |
| |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor3); |
| |
| Configuration cf2 = resolveRequires(cf1, finder2, "m3"); |
| |
| ClassLoader cl2 = new ClassLoader() { }; |
| Layer layer2 = layer1.defineModules(cf2, mn -> cl2); |
| |
| assertTrue(layer1.parents().size() == 1); |
| assertTrue(layer1.parents().get(0) == Layer.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 |
| = ModuleDescriptor.module("m1") |
| .build(); |
| |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1); |
| |
| Configuration cf1 = resolveRequires(finder1, "m1"); |
| |
| ClassLoader cl1 = new ClassLoader() { }; |
| Layer layer1 = Layer.empty().defineModules(cf1, mn -> cl1); |
| |
| |
| // cf2: m2, m3: m2 requires transitive m1, m3 requires m2 |
| |
| ModuleDescriptor descriptor2 |
| = ModuleDescriptor.module("m2") |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") |
| .build(); |
| |
| ModuleDescriptor descriptor3 |
| = ModuleDescriptor.module("m3") |
| .requires("m2") |
| .build(); |
| |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor2, descriptor3); |
| |
| Configuration cf2 = resolveRequires(cf1, finder2, "m3"); |
| |
| ClassLoader cl2 = new ClassLoader() { }; |
| Layer layer2 = layer1.defineModules(cf2, mn -> cl2); |
| |
| assertTrue(layer1.parents().size() == 1); |
| assertTrue(layer1.parents().get(0) == Layer.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 |
| = ModuleDescriptor.module("m1") |
| .build(); |
| |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1); |
| |
| Configuration cf1 = resolveRequires(finder1, "m1"); |
| |
| ClassLoader cl1 = new ClassLoader() { }; |
| Layer layer1 = Layer.empty().defineModules(cf1, mn -> cl1); |
| |
| |
| // cf2: m2 requires transitive m1 |
| |
| ModuleDescriptor descriptor2 |
| = ModuleDescriptor.module("m2") |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") |
| .build(); |
| |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor2); |
| |
| Configuration cf2 = resolveRequires(cf1, finder2, "m2"); |
| |
| ClassLoader cl2 = new ClassLoader() { }; |
| Layer layer2 = layer1.defineModules(cf2, mn -> cl2); |
| |
| |
| // cf3: m3 requires m2 |
| |
| ModuleDescriptor descriptor3 |
| = ModuleDescriptor.module("m3") |
| .requires("m2") |
| .build(); |
| |
| ModuleFinder finder3 = ModuleUtils.finderOf(descriptor3); |
| |
| Configuration cf3 = resolveRequires(cf2, finder3, "m3"); |
| |
| ClassLoader cl3 = new ClassLoader() { }; |
| Layer layer3 = layer2.defineModules(cf3, mn -> cl3); |
| |
| assertTrue(layer1.parents().size() == 1); |
| assertTrue(layer1.parents().get(0) == Layer.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 |
| = ModuleDescriptor.module("m1") |
| .build(); |
| |
| ModuleDescriptor descriptor2 |
| = ModuleDescriptor.module("m2") |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m1") |
| .build(); |
| |
| ModuleFinder finder1 = ModuleUtils.finderOf(descriptor1, descriptor2); |
| |
| Configuration cf1 = resolveRequires(finder1, "m2"); |
| |
| ClassLoader cl1 = new ClassLoader() { }; |
| Layer layer1 = Layer.empty().defineModules(cf1, mn -> cl1); |
| |
| |
| // cf2: m3 requires transitive m2, m4 requires m3 |
| |
| ModuleDescriptor descriptor3 |
| = ModuleDescriptor.module("m3") |
| .requires(Set.of(Requires.Modifier.TRANSITIVE), "m2") |
| .build(); |
| |
| ModuleDescriptor descriptor4 |
| = ModuleDescriptor.module("m4") |
| .requires("m3") |
| .build(); |
| |
| |
| ModuleFinder finder2 = ModuleUtils.finderOf(descriptor3, descriptor4); |
| |
| Configuration cf2 = resolveRequires(cf1, finder2, "m3", "m4"); |
| |
| ClassLoader cl2 = new ClassLoader() { }; |
| Layer layer2 = layer1.defineModules(cf2, mn -> cl2); |
| |
| assertTrue(layer1.parents().size() == 1); |
| assertTrue(layer1.parents().get(0) == Layer.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)); |
| } |
| |
| |
| /** |
| * Attempt to use Layer 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 |
| = ModuleDescriptor.module("m") |
| .requires("java.base") |
| .build(); |
| |
| ModuleFinder finder = ModuleUtils.finderOf(md); |
| |
| Configuration parent = Layer.boot().configuration(); |
| |
| Configuration cf = parent.resolveRequires(finder, ModuleFinder.of(), Set.of("m")); |
| |
| ClassLoader loader = new ClassLoader() { }; |
| |
| Layer.boot().defineModules(cf, mn -> loader); |
| |
| // should throw LayerInstantiationException as m1 already defined to loader |
| Layer.boot().defineModules(cf, mn -> loader); |
| |
| } |
| |
| |
| /** |
| * Attempt to use Layer 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 |
| = ModuleDescriptor.module("m1") |
| .contains("p") |
| .requires("java.base") |
| .build(); |
| |
| ModuleDescriptor md2 |
| = ModuleDescriptor.module("m2") |
| .contains("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 = Layer.boot().configuration(); |
| |
| Configuration cf1 = parent.resolveRequires(finder, ModuleFinder.of(), Set.of("m1")); |
| |
| Layer layer1 = Layer.boot().defineModules(cf1, mn -> loader); |
| |
| // attempt to define m2 containing package p to class loader |
| |
| Configuration cf2 = parent.resolveRequires(finder, ModuleFinder.of(), Set.of("m2")); |
| |
| // should throw exception because p already in m1 |
| Layer layer2 = Layer.boot().defineModules(cf2, mn -> loader); |
| |
| } |
| |
| |
| /** |
| * Attempt to use Layer 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 |
| = ModuleDescriptor.module("m") |
| .contains(c.getPackageName()) |
| .requires("java.base") |
| .build(); |
| |
| ModuleFinder finder = ModuleUtils.finderOf(md); |
| |
| Configuration parent = Layer.boot().configuration(); |
| Configuration cf = parent.resolveRequires(finder, ModuleFinder.of(), Set.of("m")); |
| |
| Layer.boot().defineModules(cf, mn -> c.getClassLoader()); |
| } |
| |
| |
| /** |
| * Attempt to create a Layer with a module named "java.base". |
| */ |
| public void testLayerWithJavaBase() { |
| ModuleDescriptor descriptor |
| = ModuleDescriptor.module("java.base") |
| .exports("java.lang") |
| .build(); |
| |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); |
| |
| Configuration cf = Layer.boot() |
| .configuration() |
| .resolveRequires(finder, ModuleFinder.of(), Set.of("java.base")); |
| assertTrue(cf.modules().size() == 1); |
| |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); |
| |
| try { |
| Layer.boot().defineModules(cf, mn -> new ClassLoader() { }); |
| assertTrue(false); |
| } catch (LayerInstantiationException e) { } |
| |
| try { |
| Layer.boot().defineModulesWithOneLoader(cf, scl); |
| assertTrue(false); |
| } catch (LayerInstantiationException e) { } |
| |
| try { |
| Layer.boot().defineModulesWithManyLoaders(cf, scl); |
| assertTrue(false); |
| } catch (LayerInstantiationException e) { } |
| } |
| |
| |
| /** |
| * Attempt to create a Layer with a module containing a "java." package. |
| * This should only be allowed when the module is defined to the platform |
| * class loader. |
| */ |
| @Test(enabled = false) |
| public void testLayerWithJavaPackage() { |
| ModuleDescriptor descriptor |
| = ModuleDescriptor.module("foo") |
| .contains("java.foo") |
| .build(); |
| |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); |
| |
| Configuration cf = Layer.boot() |
| .configuration() |
| .resolveRequires(finder, ModuleFinder.of(), Set.of("foo")); |
| assertTrue(cf.modules().size() == 1); |
| |
| ClassLoader pcl = ClassLoader.getPlatformClassLoader(); |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); |
| |
| try { |
| Layer.boot().defineModules(cf, mn -> new ClassLoader() { }); |
| assertTrue(false); |
| } catch (LayerInstantiationException e) { } |
| |
| try { |
| Layer.boot().defineModulesWithOneLoader(cf, scl); |
| assertTrue(false); |
| } catch (LayerInstantiationException e) { } |
| |
| try { |
| Layer.boot().defineModulesWithManyLoaders(cf, scl); |
| assertTrue(false); |
| } catch (LayerInstantiationException e) { } |
| |
| // create layer with module defined to platform class loader |
| Layer layer = Layer.boot().defineModules(cf, mn -> pcl); |
| Optional<Module> om = layer.findModule("foo"); |
| assertTrue(om.isPresent()); |
| Module foo = om.get(); |
| assertTrue(foo.getClassLoader() == pcl); |
| assertTrue(foo.getPackages().length == 1); |
| assertTrue(foo.getPackages()[0].equals("java.foo")); |
| } |
| |
| |
| /** |
| * Attempt to create a Layer with a module defined to the boot loader |
| */ |
| @Test(expectedExceptions = { LayerInstantiationException.class }) |
| public void testLayerWithBootLoader() { |
| ModuleDescriptor descriptor |
| = ModuleDescriptor.module("m1") |
| .build(); |
| |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor); |
| |
| Configuration cf = Layer.boot() |
| .configuration() |
| .resolveRequires(finder, ModuleFinder.of(), Set.of("m1")); |
| assertTrue(cf.modules().size() == 1); |
| |
| Layer.boot().defineModules(cf, mn -> null ); |
| } |
| |
| |
| /** |
| * Parent of configuration != configuration of parent Layer |
| */ |
| @Test(expectedExceptions = { IllegalArgumentException.class }) |
| public void testIncorrectParent1() { |
| |
| ModuleDescriptor descriptor1 |
| = ModuleDescriptor.module("m1") |
| .requires("java.base") |
| .build(); |
| |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor1); |
| |
| Configuration parent = Layer.boot().configuration(); |
| Configuration cf = parent.resolveRequires(finder, ModuleFinder.of(), Set.of("m1")); |
| |
| ClassLoader loader = new ClassLoader() { }; |
| Layer.empty().defineModules(cf, mn -> loader); |
| } |
| |
| |
| /** |
| * Parent of configuration != configuration of parent Layer |
| */ |
| @Test(expectedExceptions = { IllegalArgumentException.class }) |
| public void testIncorrectParent2() { |
| |
| ModuleDescriptor descriptor1 |
| = ModuleDescriptor.module("m1") |
| .build(); |
| |
| ModuleFinder finder = ModuleUtils.finderOf(descriptor1); |
| |
| Configuration cf = resolveRequires(finder, "m1"); |
| |
| ClassLoader loader = new ClassLoader() { }; |
| Layer.boot().defineModules(cf, mn -> loader); |
| } |
| |
| |
| // null handling |
| |
| @Test(expectedExceptions = { NullPointerException.class }) |
| public void testCreateWithNull1() { |
| ClassLoader loader = new ClassLoader() { }; |
| Layer.empty().defineModules(null, mn -> loader); |
| } |
| |
| @Test(expectedExceptions = { NullPointerException.class }) |
| public void testCreateWithNull2() { |
| Configuration cf = resolveRequires(Layer.boot().configuration(), ModuleFinder.of()); |
| Layer.boot().defineModules(cf, null); |
| } |
| |
| @Test(expectedExceptions = { NullPointerException.class }) |
| public void testCreateWithNull3() { |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); |
| Layer.empty().defineModulesWithOneLoader(null, scl); |
| } |
| |
| @Test(expectedExceptions = { NullPointerException.class }) |
| public void testCreateWithNull4() { |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); |
| Layer.empty().defineModulesWithManyLoaders(null, scl); |
| } |
| |
| @Test(expectedExceptions = { NullPointerException.class }) |
| public void testFindModuleWithNull() { |
| Layer.boot().findModule(null); |
| } |
| |
| @Test(expectedExceptions = { NullPointerException.class }) |
| public void testFindLoaderWithNull() { |
| Layer.boot().findLoader(null); |
| } |
| |
| |
| // immutable sets |
| |
| @Test(expectedExceptions = { UnsupportedOperationException.class }) |
| public void testImmutableSet() { |
| Module base = Object.class.getModule(); |
| Layer.boot().modules().add(base); |
| } |
| |
| |
| /** |
| * Resolve the given modules, by name, and returns the resulting |
| * Configuration. |
| */ |
| private static Configuration resolveRequires(Configuration cf, |
| ModuleFinder finder, |
| String... roots) { |
| return cf.resolveRequires(finder, ModuleFinder.of(), Set.of(roots)); |
| } |
| |
| private static Configuration resolveRequires(ModuleFinder finder, |
| String... roots) { |
| return resolveRequires(Configuration.empty(), finder, roots); |
| } |
| } |
