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/*
* Copyright (c) 2022, 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 java.lang.reflect.Modifier;
import java.lang.annotation.*;
/*
* @test
* @bug 8296743
* @summary Verify array classes and primitives have expected modifiers
*/
@ExpectedModifiers(Modifier.PUBLIC | Modifier.FINAL | Modifier.ABSTRACT)
public class TestPrimitiveAndArrayModifiers {
/*
* Relevant excerpt of the Class.getModifiers() specification:
* <p> If the underlying class is an array class:
* <ul>
* <li> its {@code public}, {@code private} and {@code protected}
* modifiers are the same as those of its component type
* <li> its {@code final} and {@code abstract} modifiers are always
* {@code true}
* <li> its interface modifier is always {@code false}, even when
* the component type is an interface
* </ul>
*/
public static void main(String... args) throws Exception {
testPrimitives();
testArrays();
}
private static void testArrays() {
Class<?>[] testCases = {
TestPrimitiveAndArrayModifiers.class,
PackagePrivateClass.class,
ProtectedClass.class,
PrivateClass.class,
PublicInterface.class,
PackagePrivateInterface.class,
ProtectedInterface.class,
PrivateInterface.class,
};
for(var testCase : testCases) {
int expectedModifiers =
testCase.getAnnotation(ExpectedModifiers.class).value();
Class<?> arrayClass = testCase.arrayType();
int actualModifiers = arrayClass.getModifiers();
if (expectedModifiers != actualModifiers) {
throw new RuntimeException("Expected " + Modifier.toString(expectedModifiers) +
"on " + testCase.getCanonicalName() +
", but got " + Modifier.toString(actualModifiers));
}
}
}
@ExpectedModifiers(Modifier.FINAL | Modifier.ABSTRACT)
class PackagePrivateClass {}
@ExpectedModifiers(Modifier.FINAL | Modifier.ABSTRACT | Modifier.PROTECTED)
protected class ProtectedClass {}
@ExpectedModifiers(Modifier.FINAL | Modifier.ABSTRACT | Modifier.PRIVATE)
private class PrivateClass {}
@ExpectedModifiers(Modifier.FINAL | Modifier.ABSTRACT | Modifier.PUBLIC)
public interface PublicInterface {}
@ExpectedModifiers(Modifier.FINAL | Modifier.ABSTRACT)
interface PackagePrivateInterface {}
@ExpectedModifiers(Modifier.FINAL | Modifier.ABSTRACT | Modifier.PROTECTED)
protected interface ProtectedInterface {}
@ExpectedModifiers(Modifier.FINAL | Modifier.ABSTRACT | Modifier.PRIVATE)
private interface PrivateInterface {}
/*
* Relevant excerpt of the Class.getModifiers() specification:
*
* If this {@code Class} object represents a primitive type or
* void, its {@code public}, {@code abstract}, and {@code final}
* modifiers are always {@code true}.
*/
private static void testPrimitives() {
Class<?>[] testCases = {
void.class,
boolean.class,
byte.class,
short.class,
char.class,
int.class,
float.class,
long.class,
double.class,
};
for(var testCase : testCases) {
int actualModifiers = testCase.getModifiers();
if ((Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL) !=
actualModifiers) {
throw new RuntimeException("Bad modifiers " +
Modifier.toString(actualModifiers) +
" on primitive type " + testCase);
}
}
}
}
@Retention(RetentionPolicy.RUNTIME)
@interface ExpectedModifiers {
int value() default 0;
}
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