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