| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| * @bug 8081800 8165827 |
| * @summary Add JNI invocation tests for private interface methods |
| * @run main/native PrivateInterfaceMethods |
| */ |
| |
| public class PrivateInterfaceMethods { |
| |
| static { |
| System.loadLibrary("PrivateInterfaceMethods"); |
| } |
| |
| static native int callIntVoid(Object target, String definingClassName, String methodName, boolean virtual); |
| static native void lookupIntVoid(String definingClassName, String methodName); |
| |
| static interface A { |
| static final int AmResult = 1; |
| private int m() { return AmResult; } |
| private int onlyA() { return 0; } |
| } |
| |
| static interface B extends A { |
| // No m() here |
| private int onlyB() { return 0; } |
| } |
| |
| static interface C extends B { |
| static final int CmResult = 2; |
| private int m() { return CmResult; } // unrelated to A.m |
| private int onlyC() { return 0; } |
| } |
| |
| public static class Impl implements C { |
| static final int ImplmResult = 3; |
| private int m() { return ImplmResult; } // unrelated to A.m or C.m |
| } |
| |
| // We found that itable/vtable construction was affected by whether or not the |
| // implementation class declared a method with the same signature as the |
| // private interface method, so we test both variants. |
| |
| public static class Impl2 implements C { |
| } |
| |
| public static void main(String[] args) { |
| |
| // JNI getMethodID only works for methods declared in or inherited by a type. |
| // Private interface methods are not inherited and so should only be found |
| // in the declaring interface. |
| |
| lookup(A.class.getName(), "onlyA", null); // should succeed |
| lookup(B.class.getName(), "onlyA", NoSuchMethodError.class); // should fail |
| lookup(C.class.getName(), "onlyA", NoSuchMethodError.class); // should fail |
| lookup(Impl.class.getName(), "onlyA", NoSuchMethodError.class); // should fail |
| lookup(Impl2.class.getName(), "onlyA", NoSuchMethodError.class); // should fail |
| |
| lookup(B.class.getName(), "onlyB", null); // should succeed |
| lookup(A.class.getName(), "onlyB", NoSuchMethodError.class); // should fail |
| lookup(C.class.getName(), "onlyB", NoSuchMethodError.class); // should fail |
| lookup(Impl.class.getName(), "onlyB", NoSuchMethodError.class); // should fail |
| lookup(Impl2.class.getName(), "onlyB", NoSuchMethodError.class); // should fail |
| |
| lookup(C.class.getName(), "onlyC", null); // should succeed |
| lookup(A.class.getName(), "onlyC", NoSuchMethodError.class); // should fail |
| lookup(B.class.getName(), "onlyC", NoSuchMethodError.class); // should fail |
| lookup(Impl.class.getName(), "onlyC", NoSuchMethodError.class); // should fail |
| lookup(Impl2.class.getName(), "onlyC", NoSuchMethodError.class); // should fail |
| |
| Impl impl = new Impl(); |
| |
| // Note: JNI doesn't enforce access control so we can make |
| // private calls not possible in Java code. |
| // Also it doesn't check that the receiver is a type that |
| // defines the method! |
| |
| // test: ((A)impl).m() - should succeed |
| test(impl, A.class.getName(), "m", A.AmResult, true, null); |
| test(impl, A.class.getName(), "m", A.AmResult, false, null); |
| |
| // test: ((B)impl).m() - should fail: NoSuchMethodError |
| test(impl, B.class.getName(), "m", -1, true, NoSuchMethodError.class); |
| test(impl, B.class.getName(), "m", -1, false, NoSuchMethodError.class); |
| |
| // test: ((C)impl).m() - should succeed |
| test(impl, C.class.getName(), "m", C.CmResult, true, null); |
| test(impl, C.class.getName(), "m", C.CmResult, false, null); |
| |
| // test: impl.m() - should succeed |
| test(impl, Impl.class.getName(), "m", Impl.ImplmResult, true, null); |
| test(impl, Impl.class.getName(), "m", Impl.ImplmResult, false, null); |
| |
| // --- |
| |
| Impl2 impl2 = new Impl2(); |
| |
| // test: ((A)impl2).m() - should succeed |
| test(impl2, A.class.getName(), "m", A.AmResult, true, null); |
| test(impl2, A.class.getName(), "m", A.AmResult, false, null); |
| |
| // test: ((B)impl2).m() - should fail: NoSuchMethodError |
| test(impl2, B.class.getName(), "m", -1, true, NoSuchMethodError.class); |
| test(impl2, B.class.getName(), "m", -1, false, NoSuchMethodError.class); |
| |
| // test: ((C)impl2).m() - should succeed |
| test(impl2, C.class.getName(), "m", C.CmResult, true, null); |
| test(impl2, C.class.getName(), "m", C.CmResult, false, null); |
| |
| // test: impl2.m() - should fail: NoSuchMethodError |
| test(impl2, Impl2.class.getName(), "m", -1, true, NoSuchMethodError.class); |
| test(impl2, Impl2.class.getName(), "m", -1, false, NoSuchMethodError.class); |
| } |
| |
| static void lookup(String definingClass, String method, Class<?> expectedException) { |
| |
| String desc = "Lookup of " + definingClass + "." + method; |
| try { |
| lookupIntVoid(definingClass, method); |
| if (expectedException != null) |
| throw new Error(desc + " succeeded - but expected exception " |
| + expectedException.getSimpleName()); |
| System.out.println(desc + " - passed"); |
| } |
| catch (Throwable t) { |
| if (t.getClass() != expectedException) |
| throw new Error(desc + " failed: got exception " + t + " but expected exception " |
| + expectedException.getSimpleName()); |
| else |
| System.out.println(desc + " threw " + expectedException.getSimpleName() + " as expected"); |
| } |
| } |
| |
| static void test(Object target, String definingClass, String method, |
| int expected, boolean virtual, Class<?> expectedException) { |
| |
| String desc = (virtual ? "Virtual" : "Nonvirtual") + " Invocation of " + |
| definingClass + "." + method + " on instance of class " + |
| target.getClass().getName(); |
| try { |
| int res = callIntVoid(target, definingClass, method, virtual); |
| if (expectedException != null) |
| throw new Error(desc + " succeeded - but expected exception " |
| + expectedException.getSimpleName()); |
| if (res != expected) |
| throw new Error(desc + " got wrong result: " + res + " instead of " + expected); |
| System.out.println(desc + " - passed"); |
| } |
| catch (Throwable t) { |
| if (t.getClass() != expectedException) |
| throw new Error(desc + " failed: got exception " + t + " but expected exception " |
| + expectedException.getSimpleName()); |
| else |
| System.out.println(desc + " threw " + expectedException.getSimpleName() + " as expected"); |
| } |
| } |
| |
| } |