1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 import java.lang.module.ModuleDescriptor; 26 import java.lang.module.ModuleFinder; 27 import java.lang.module.ModuleReference; 28 29 /** 30 * Test the set of modules in the boot layer includes all modules that export 31 * an API. Also test that java.se is not resolved. 32 */ 33 34 public class TestRootModules { 35 public static void main(String[] args) { 36 // all modules that export an API should be resolved 37 // For now, this test ignores the ModuleResolution attribute 38 ModuleLayer bootLayer = ModuleLayer.boot(); 39 ModuleFinder.ofSystem().findAll().stream() 40 .map(ModuleReference::descriptor) 41 .filter(descriptor -> descriptor.exports() 42 .stream() 43 .filter(e -> !e.isQualified()) 44 .findAny() 45 .isPresent()) 46 .map(ModuleDescriptor::name) 47 .forEach(name -> { 48 if (!bootLayer.findModule(name).isPresent()) 49 throw new RuntimeException(name + " not in boot layer"); 50 }); 51 52 // java.se should not be resolved 53 ModuleLayer.boot() 54 .findModule("java.se") 55 .map(m -> { throw new RuntimeException("java.se should not be resolved"); }); 56 } 57 }