1 /* 2 * Copyright (c) 2014, 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 import java.lang.invoke.MethodHandle; 25 import java.lang.reflect.InvocationTargetException; 26 27 /** 28 * Abstract class for lambda forms caching testing. 29 * 30 * @author kshefov 31 */ 32 public abstract class LFCachingTestCase extends LambdaFormTestCase { 33 34 /** 35 * Constructor for lambda forms caching test case. 36 * 37 * @param testMethod A method from {@code j.l.i.MethodHandles} class that 38 * returns a {@code j.l.i.MethodHandle} instance. 39 */ 40 protected LFCachingTestCase(TestMethods testMethod) { 41 super(testMethod); 42 } 43 44 /** 45 * Checks that the lambda forms of the two adapter method handles adapter1 46 * and adapter2 are the same. 47 * 48 * @param adapter1 First method handle. 49 * @param adapter2 Second method handle. 50 */ 51 public void checkLFCaching(MethodHandle adapter1, MethodHandle adapter2) { 52 try { 53 54 if (!adapter1.type().equals(adapter2.type())) { 55 throw new Error("TESTBUG: Types of the two method handles are not the same"); 56 } 57 58 Object lambdaForm0 = LambdaFormTestCase.INTERNAL_FORM.invoke(adapter1); 59 Object lambdaForm1 = LambdaFormTestCase.INTERNAL_FORM.invoke(adapter2); 60 61 if (lambdaForm0 == null || lambdaForm1 == null) { 62 throw new Error("Unexpected error: One or both lambda forms of the method handles are null"); 63 } 64 65 if (lambdaForm0 != lambdaForm1) { 66 System.err.println("Lambda form 0 toString is:"); 67 System.err.println(lambdaForm0); 68 System.err.println("Lambda form 1 toString is:"); 69 System.err.println(lambdaForm1); 70 throw new AssertionError("Error: Lambda forms of the two method handles" 71 + " are not the same. LF cahing does not work"); 72 } 73 } catch (IllegalAccessException | IllegalArgumentException | 74 SecurityException | InvocationTargetException ex) { 75 throw new Error("Unexpected exception: ", ex); 76 } 77 } 78 }