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/*
* Copyright (c) 2014, 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 5043030
* @summary Verify that the method java.lang.reflect.Method.invoke(Object, Object...)
* makes use of the same caching mechanism as used for autoboxing
* when wrapping returned values of the primitive types.
* @author Andrej Golovnin
* @run main/othervm -Dsun.reflect.noInflation=true TestMethodReflectValueOf
* @run main/othervm -Dsun.reflect.noInflation=false -Dsun.reflect.inflationThreshold=500 TestMethodReflectValueOf
*/
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class TestMethodReflectValueOf {
public static void main(String[] args) {
// When the inflation is disabled we compare values using "=="
// as the returned values of the primitive types should be cached
// by the same mechanism as used for autoboxing. When the inflation
// is enabled we use "equals()"-method to compare values as the native
// code still creates new instances to wrap values of the primitive
// types.
boolean checkIdentity = Boolean.getBoolean("sun.reflect.noInflation");
// Boolean#valueOf test
testMethod(Boolean.TYPE, Boolean.FALSE, checkIdentity);
testMethod(Boolean.TYPE, Boolean.TRUE, checkIdentity);
// Byte#valueOf test
for (int b = Byte.MIN_VALUE; b < (Byte.MAX_VALUE + 1); b++) {
testMethod(Byte.TYPE, Byte.valueOf((byte) b), checkIdentity);
}
// Character#valueOf test
for (char c = '\u0000'; c <= '\u007F'; c++) {
testMethod(Character.TYPE, Character.valueOf(c), checkIdentity);
}
// Integer#valueOf test
for (int i = -128; i <= 127; i++) {
testMethod(Integer.TYPE, Integer.valueOf(i), checkIdentity);
}
// Long#valueOf test
for (long l = -128L; l <= 127L; l++) {
testMethod(Long.TYPE, Long.valueOf(l), checkIdentity);
}
// Short#valueOf test
for (short s = -128; s <= 127; s++) {
testMethod(Short.TYPE, Short.valueOf(s), checkIdentity);
}
}
public static void testMethod(Class<?> primType, Object wrappedValue,
boolean checkIdentity)
{
String methodName = primType.getName() + "Method";
try {
Method method = TestMethodReflectValueOf.class.getMethod(methodName, primType);
Object result = method.invoke(new TestMethodReflectValueOf(), wrappedValue);
if (checkIdentity) {
if (result != wrappedValue) {
throw new RuntimeException("The value " + wrappedValue
+ " is not cached for the type " + primType);
}
} else {
if (!result.equals(wrappedValue)) {
throw new RuntimeException("The result value " + result
+ " is not equal to the expected value "
+ wrappedValue + " for the type " + primType);
}
}
} catch ( NoSuchMethodException | SecurityException
| IllegalAccessException | IllegalArgumentException
| InvocationTargetException e)
{
throw new RuntimeException(e);
}
}
public int intMethod(int value) {
return value;
}
public long longMethod(long value) {
return value;
}
public short shortMethod(short value) {
return value;
}
public byte byteMethod(byte value) {
return value;
}
public char charMethod(char value) {
return value;
}
public boolean booleanMethod(boolean value) {
return value;
}
}
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