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/*
* Copyright (c) 2023, 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.
*/
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import java.lang.constant.ClassDesc;
import java.lang.constant.ConstantDesc;
import java.lang.constant.ConstantDescs;
import java.lang.constant.DirectMethodHandleDesc;
import java.lang.constant.DynamicCallSiteDesc;
import java.lang.constant.DynamicConstantDesc;
import java.lang.constant.MethodHandleDesc;
import java.lang.constant.MethodTypeDesc;
import java.lang.invoke.CallSite;
import java.lang.invoke.ConstantBootstraps;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.invoke.VarHandle;
import java.lang.reflect.AccessFlag;
import java.lang.reflect.Field;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Stream;
import static java.lang.constant.ConstantDescs.*;
import static org.testng.Assert.assertEquals;
/*
* @test
* @compile ConstantDescsTest.java
* @run testng ConstantDescsTest
* @summary unit tests for java.lang.constant.ConstantDescs
*/
public class ConstantDescsTest {
@DataProvider(name = "validateFields")
public Object[][] knownFieldsData() {
return new Object[][]{
{CD_Object, Object.class},
{CD_String, String.class},
{CD_Class, Class.class},
{CD_Number, Number.class},
{CD_Integer, Integer.class},
{CD_Long, Long.class},
{CD_Float, Float.class},
{CD_Double, Double.class},
{CD_Short, Short.class},
{CD_Byte, Byte.class},
{CD_Character, Character.class},
{CD_Boolean, Boolean.class},
{CD_Void, Void.class},
{CD_Exception, Exception.class},
{CD_Throwable, Throwable.class},
{CD_Enum, Enum.class},
{CD_VarHandle, VarHandle.class},
{CD_MethodHandles, MethodHandles.class},
{CD_MethodHandles_Lookup, MethodHandles.Lookup.class},
{CD_MethodHandle, MethodHandle.class},
{CD_MethodType, MethodType.class},
{CD_CallSite, CallSite.class},
{CD_Collection, Collection.class},
{CD_List, List.class},
{CD_Set, Set.class},
{CD_Map, Map.class},
{CD_ConstantDesc, ConstantDesc.class},
{CD_ClassDesc, ClassDesc.class},
{CD_EnumDesc, Enum.EnumDesc.class},
{CD_MethodTypeDesc, MethodTypeDesc.class},
{CD_MethodHandleDesc, MethodHandleDesc.class},
{CD_DirectMethodHandleDesc, DirectMethodHandleDesc.class},
{CD_VarHandleDesc, VarHandle.VarHandleDesc.class},
{CD_MethodHandleDesc_Kind, DirectMethodHandleDesc.Kind.class},
{CD_DynamicConstantDesc, DynamicConstantDesc.class},
{CD_DynamicCallSiteDesc, DynamicCallSiteDesc.class},
{CD_ConstantBootstraps, ConstantBootstraps.class},
{CD_int, int.class},
{CD_long, long.class},
{CD_float, float.class},
{CD_double, double.class},
{CD_short, short.class},
{CD_byte, byte.class},
{CD_char, char.class},
{CD_boolean, boolean.class},
{CD_void, void.class},
{NULL, null},
{TRUE, Boolean.TRUE},
{FALSE, Boolean.FALSE},
};
}
/**
* Checks that ConstantDescs descriptor fields resolve to the right
* constants.
* @throws ReflectiveOperationException if the test fails
*/
@Test(dataProvider = "validateFields")
public void validateFields(ConstantDesc desc, Object value) throws ReflectiveOperationException {
// Use a minimally-trusted lookup
assertEquals(desc.resolveConstantDesc(MethodHandles.publicLookup()), value);
}
/**
* Ensures all public static final descriptor fields in ConstantDescs
* are resolvable.
* @throws ReflectiveOperationException if the test fails
*/
@Test
public void checkFieldsResolvable() throws ReflectiveOperationException {
// minimally trusted lookup
var lookup = MethodHandles.publicLookup();
var fields = Stream.of(ConstantDescs.class.getFields())
.filter(f -> f.accessFlags().contains(AccessFlag.STATIC)
&& ConstantDesc.class.isAssignableFrom(f.getType()))
.toArray(Field[]::new);
for (var field : fields) {
var desc = (ConstantDesc) field.get(null);
desc.resolveConstantDesc(lookup);
}
}
}
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