1/* 2 * Copyright (c) 2015, 2016, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26/* @test 27 * @bug 8139885 28 * @run testng/othervm -ea -esa test.java.lang.invoke.FindAccessTest 29 */ 30 31package test.java.lang.invoke; 32 33import java.lang.invoke.MethodHandle; 34import java.lang.invoke.MethodHandles; 35import java.lang.invoke.MethodHandles.Lookup; 36import java.lang.invoke.MethodType; 37 38import static org.testng.AssertJUnit.*; 39 40import org.testng.annotations.*; 41 42/** 43 * Tests for Lookup.findClass/accessClass extensions added in JEP 274. 44 */ 45public class FindAccessTest { 46 47 static final Lookup LOOKUP = MethodHandles.lookup(); 48 49 @Test 50 public static void testFindSpecial() throws Throwable { 51 FindSpecial.C c = new FindSpecial.C(); 52 assertEquals("I1.m", c.m()); 53 MethodType t = MethodType.methodType(String.class); 54 MethodHandle ci1m = LOOKUP.findSpecial(FindSpecial.I1.class, "m", t, FindSpecial.C.class); 55 assertEquals("I1.m", (String) ci1m.invoke(c)); 56 } 57 58 @Test 59 public static void testFindSpecialAbstract() throws Throwable { 60 FindSpecial.C c = new FindSpecial.C(); 61 assertEquals("q", c.q()); 62 MethodType t = MethodType.methodType(String.class); 63 boolean caught = false; 64 try { 65 MethodHandle ci3q = LOOKUP.findSpecial(FindSpecial.I3.class, "q", t, FindSpecial.C.class); 66 } catch (Throwable thrown) { 67 if (!(thrown instanceof IllegalAccessException) || !FindSpecial.ABSTRACT_ERROR.equals(thrown.getMessage())) { 68 throw new AssertionError(thrown.getMessage(), thrown); 69 } 70 caught = true; 71 } 72 assertTrue(caught); 73 } 74 75 @Test(expectedExceptions = {ClassNotFoundException.class}) 76 public static void testFindClassCNFE() throws ClassNotFoundException, IllegalAccessException { 77 LOOKUP.findClass("does.not.Exist"); 78 } 79 80 static class FindSpecial { 81 82 interface I1 { 83 default String m() { 84 return "I1.m"; 85 } 86 } 87 88 interface I2 { 89 default String m() { 90 return "I2.m"; 91 } 92 } 93 94 interface I3 { 95 String q(); 96 } 97 98 static class C implements I1, I2, I3 { 99 public String m() { 100 return I1.super.m(); 101 } 102 public String q() { 103 return "q"; 104 } 105 } 106 107 static final String ABSTRACT_ERROR = "no such method: test.java.lang.invoke.FindAccessTest$FindSpecial$I3.q()String/invokeSpecial"; 108 109 } 110 111} 112