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 import jdk.incubator.code.Op;
 25 import org.testng.Assert;
 26 import org.testng.annotations.Test;
 27 import org.testng.annotations.DataProvider;
 28 
 29 import java.lang.invoke.MethodHandles;
 30 import java.lang.reflect.InvocationTargetException;
 31 import java.lang.reflect.Method;
 32 import jdk.incubator.code.interpreter.Interpreter;
 33 import jdk.incubator.code.op.CoreOp;
 34 import jdk.incubator.code.CodeReflection;
 35 import java.util.*;
 36 import java.util.stream.Stream;
 37 
 38 /*
 39  * @test
 40  * @modules jdk.incubator.code
 41  * @run testng TestOverloads
 42  */
 43 
 44 public class TestOverloads {
 45 
 46     @CodeReflection
 47     static int f() {
 48        return 0;
 49     }
 50 
 51     @CodeReflection
 52     static int f(int i) {
 53        return 1;
 54     }
 55 
 56     @CodeReflection
 57     static int f(Integer i) {
 58        return 2;
 59     }
 60 
 61     @CodeReflection
 62     static int f(Object o) {
 63        return 3;
 64     }
 65 
 66     @CodeReflection
 67     static int f(List<Integer> l) {
 68        return 4;
 69     }
 70 
 71     @CodeReflection
 72     static int f(List<Integer> l, Object o) {
 73        return 5;
 74     }
 75 
 76     @DataProvider(name = "testData")
 77     public static Object[][]  testData() {
 78         return new Object[][]{
 79             new Object[] {new Class[]{}, new Object[]{}},
 80             new Object[] {new Class[]{int.class}, new Object[]{-1}},
 81             new Object[] {new Class[]{Integer.class}, new Object[]{-1}},
 82             new Object[] {new Class[]{Object.class}, new Object[]{"hello"}},
 83             new Object[] {new Class[]{List.class}, new Object[]{List.of()}},
 84             new Object[] {new Class[]{List.class, Object.class}, new Object[]{List.of(), -1}}
 85         };
 86     }
 87 
 88     @Test(dataProvider = "testData")
 89     public static void testOverloads(Class<?>[] paramTypes, Object[] params) {
 90         try {
 91             Class<TestOverloads> clazz = TestOverloads.class;
 92             Method method = clazz.getDeclaredMethod("f", paramTypes);
 93             CoreOp.FuncOp f = Op.ofMethod(method).orElseThrow();
 94             var res1 = Interpreter.invoke(MethodHandles.lookup(), f, params);
 95             var res2 = method.invoke(null, params);
 96 
 97             Assert.assertEquals(res1, res2);
 98 
 99         } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
100             throw new RuntimeException(e);
101         }
102     }
103 }