163 lines
7.0 KiB
Java
163 lines
7.0 KiB
Java
/*
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* Copyright (c) 2017, 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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/*
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* @test
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* @bug 8157246
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* @summary Tests invocation of MethodHandle with invalid leading argument
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* @run testng/othervm test.java.lang.invoke.InvokeMethodHandleWithBadArgument
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*/
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package test.java.lang.invoke;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodHandles.Lookup;
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import java.lang.invoke.MethodType;
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import java.lang.invoke.VarHandle;
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import static java.lang.invoke.MethodType.methodType;
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import static org.testng.AssertJUnit.*;
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import org.testng.annotations.*;
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/**
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* Tests invocation of MethodHandle with invalid leading argument such as
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* MethodHandle, VarHandle, and array object
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*/
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public class InvokeMethodHandleWithBadArgument {
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// ---- null array reference ----
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@Test(expectedExceptions = {NullPointerException.class})
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public static void testAsSpreaderPosInvokeWithNull() throws Throwable {
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MethodHandle spreader = MH_spread.asSpreader(1, int[].class, 3);
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spreader.invoke("A", null, "B");
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}
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@Test(expectedExceptions = {NullPointerException.class})
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public static void testAsSpreaderInvokeWithNull() throws Throwable {
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MethodHandle spreader = MH_String_equals.asSpreader(String[].class, 2);
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assert ((boolean) spreader.invokeExact(new String[]{"me", "me"}));
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boolean eq = (boolean) spreader.invokeExact((String[]) null);
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}
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// ---- incorrect array element count ----
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@Test(expectedExceptions = {IllegalArgumentException.class})
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public static void testAsSpreaderPosInvokeWithBadElementCount() throws Throwable {
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MethodHandle spreader = MH_spread.asSpreader(1, int[].class, 3);
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spreader.invoke("A", new int[]{1, 2}, "B");
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}
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@Test(expectedExceptions = {IllegalArgumentException.class})
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public static void testAsSpreaderInvokeWithBadElementCount() throws Throwable {
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MethodHandle spreader = MH_String_equals.asSpreader(String[].class, 2);
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assert (!(boolean) spreader.invokeExact(new String[]{"me", "thee"}));
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boolean eq = (boolean) spreader.invokeExact(new String[0]);
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}
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// ---- spread no argument ----
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@Test
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public static void testAsSpreaderPosInvokeWithZeroLength() throws Throwable {
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MethodHandle spreader = MH_spread.asSpreader(1, int[].class, 0);
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assert("A123B".equals(spreader.invoke("A", (int[])null, 1, 2, 3, "B")));
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}
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@Test
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public static void testAsSpreaderInvokeWithZeroLength() throws Throwable {
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MethodHandle spreader = MH_String_equals.asSpreader(String[].class, 0);
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assert ((boolean) spreader.invokeExact("me", (Object)"me", new String[0]));
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boolean eq = (boolean) spreader.invokeExact("me", (Object)"me", (String[]) null);
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}
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// ---- invokers with null method/var handle argument ----
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@Test(expectedExceptions = {NullPointerException.class})
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public static void testInvokerWithNull() throws Throwable {
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MethodType type = methodType(int.class, int.class, int.class);
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MethodHandle invoker = MethodHandles.invoker(type);
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assert((int) invoker.invoke(MH_add, 1, 2) == 3);
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int sum = (int)invoker.invoke((MethodHandle)null, 1, 2);
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}
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@Test(expectedExceptions = {NullPointerException.class})
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public static void testExactInvokerWithNull() throws Throwable {
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MethodType type = methodType(int.class, int.class, int.class);
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MethodHandle invoker = MethodHandles.exactInvoker(type);
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assert((int) invoker.invoke(MH_add, 1, 2) == 3);
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int sum = (int)invoker.invokeExact((MethodHandle)null, 1, 2);
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}
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@Test(expectedExceptions = {NullPointerException.class})
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public static void testSpreadInvokerWithNull() throws Throwable {
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MethodType type = methodType(boolean.class, String.class, String.class);
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MethodHandle invoker = MethodHandles.spreadInvoker(type, 0);
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assert ((boolean) invoker.invoke(MH_String_equals, new String[]{"me", "me"}));
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boolean eq = (boolean) invoker.invoke((MethodHandle)null, new String[]{"me", "me"});
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}
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@Test(expectedExceptions = {NullPointerException.class})
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public static void testVarHandleInvokerWithNull() throws Throwable {
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VarHandle.AccessMode am = VarHandle.AccessMode.GET;
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MethodHandle invoker = MethodHandles.varHandleInvoker(am, VH_array.accessModeType(am));
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assert ((int) invoker.invoke(VH_array, array, 3) == 3);
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int value = (int)invoker.invoke((VarHandle)null, array, 3);
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}
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@Test(expectedExceptions = {NullPointerException.class})
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public static void testVarHandleExactInvokerWithNull() throws Throwable {
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VarHandle.AccessMode am = VarHandle.AccessMode.GET;
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MethodHandle invoker = MethodHandles.varHandleExactInvoker(am, VH_array.accessModeType(am));
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assert ((int) invoker.invoke(VH_array, array, 3) == 3);
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int value = (int)invoker.invokeExact((VarHandle)null, array, 3);
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}
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static final Lookup LOOKUP = MethodHandles.lookup();
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static final MethodHandle MH_add;
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static final MethodHandle MH_spread;
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static final MethodHandle MH_String_equals;
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static final VarHandle VH_array;
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static final int[] array = new int[] { 0, 1, 2, 3, 4, 5};
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static {
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try {
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Class<?> arrayClass = Class.forName("[I");
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VH_array = MethodHandles.arrayElementVarHandle(arrayClass);
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MH_add = LOOKUP.findStatic(InvokeMethodHandleWithBadArgument.class, "add",
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methodType(int.class, int.class, int.class));
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MH_spread = LOOKUP.findStatic(InvokeMethodHandleWithBadArgument.class, "spread",
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methodType(String.class, String.class, int.class, int.class, int.class, String.class));
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MH_String_equals = LOOKUP.findVirtual(String.class, "equals", methodType(boolean.class, Object.class));
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} catch (Exception e) {
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throw new ExceptionInInitializerError(e);
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}
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}
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static String spread(String s1, int i1, int i2, int i3, String s2) {
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return s1 + i1 + i2 + i3 + s2;
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}
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static int add(int x, int y) {
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return x+y;
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}
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}
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