1 /* 2 * Copyright (c) 2024, 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 * @test 26 * @summary Smoke test for captured values in local classes. 27 * @run testng TestLocalCapture 28 */ 29 30 import org.testng.annotations.*; 31 32 import java.lang.invoke.MethodHandles; 33 import java.lang.reflect.Method; 34 import java.lang.reflect.code.interpreter.Interpreter; 35 import java.lang.reflect.code.op.CoreOp.FuncOp; 36 import java.lang.runtime.CodeReflection; 37 import java.util.stream.IntStream; 38 39 import static org.testng.Assert.*; 40 41 public class TestLocalCapture { 42 43 int x = 13; 44 final int CONST = 1; 45 46 @CodeReflection 47 public int sum(int y, int z) { 48 final int localConst = 2; 49 class Foo { 50 int sum(int z) { return localConst + x + y + z + CONST; }; 51 } 52 return new Foo().sum(z); 53 } 54 55 @Test(dataProvider = "ints") 56 public void testLocalCapture(int y) throws ReflectiveOperationException { 57 Method sum = TestLocalCapture.class.getDeclaredMethod("sum", int.class, int.class); 58 FuncOp model = sum.getCodeModel().get(); 59 int found = (int)Interpreter.invoke(MethodHandles.lookup(), model, this, y, 17); 60 int expected = sum(y, 17); 61 assertEquals(found, expected); 62 } 63 64 @DataProvider(name = "ints") 65 public Object[][] ints() { 66 return IntStream.range(0, 50) 67 .mapToObj(i -> new Object[] { i }) 68 .toArray(Object[][]::new); 69 } 70 }