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/*
* Copyright (c) 2020, 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.
*/
/*
* @test
* @bug 8227046
* @summary reflection test for sealed classes
* @compile SealedClassesReflectionTest.java
* @run testng/othervm SealedClassesReflectionTest
*/
import java.lang.annotation.*;
import java.lang.constant.ClassDesc;
import java.lang.reflect.*;
import java.util.Arrays;
import java.util.List;
import org.testng.annotations.*;
import static org.testng.Assert.*;
@Test
public class SealedClassesReflectionTest {
sealed class SealedClass1 permits FinalSubclass1, NonSealedSubclass1 {}
final class FinalSubclass1 extends SealedClass1 {}
non-sealed class NonSealedSubclass1 extends SealedClass1 {}
sealed class SealedClass2 permits FinalSubclass2, FinalSubclass3 {}
final class FinalSubclass2 extends SealedClass2 {}
final class FinalSubclass3 extends SealedClass2 {}
sealed class SealedClass3 permits FinalSubclass4, SealedSubclass1 {}
final class FinalSubclass4 extends SealedClass3 {}
sealed class SealedSubclass1 extends SealedClass3 permits FinalSubclass5 {}
final class FinalSubclass5 extends SealedSubclass1 {}
sealed interface SealedInt1 permits FinalSubclass6, NonSealedSubInt1 {}
final class FinalSubclass6 implements SealedInt1 {}
non-sealed interface NonSealedSubInt1 extends SealedInt1 {}
sealed interface SealedInt2 permits FinalSubclass7, FinalSubclass8 {}
final class FinalSubclass7 implements SealedInt2 {}
final class FinalSubclass8 implements SealedInt2 {}
sealed interface SealedInt3 permits FinalSubclass9, SealedSubInt1, SealedSubclass2 {}
final class FinalSubclass9 implements SealedInt3 {}
sealed interface SealedSubInt1 extends SealedInt3 permits FinalSubclass10 {}
final class FinalSubclass10 implements SealedSubInt1 {}
sealed class SealedSubclass2 implements SealedInt3 permits NonSealedSubclass2 {}
non-sealed class NonSealedSubclass2 extends SealedSubclass2 {}
@DataProvider(name = "sealedClasses")
public Object[][] sealedClassesData() {
return List.of(
SealedClass1.class,
SealedClass2.class,
SealedClass3.class,
SealedSubclass1.class,
SealedInt1.class,
SealedInt2.class,
SealedInt3.class,
SealedSubInt1.class
).stream().map(c -> new Object[] {c}).toArray(Object[][]::new);
}
@Test(dataProvider = "sealedClasses")
public void testSealedClasses(Class<?> cls) {
assertTrue(cls.isSealed());
assertTrue(!Modifier.isFinal(cls.getModifiers()));
assertTrue(cls.getPermittedSubclasses() != null);
assertTrue(cls.getPermittedSubclasses().length > 0);
}
@DataProvider(name = "notSealedClasses")
public Object[][] notSealedClassesData() {
return List.of(
Object.class,
void.class, Void.class, Void[].class,
byte.class, byte[].class, Byte.class, Byte[].class,
short.class, short[].class, Short.class, Short[].class,
char.class, char[].class, Character.class, Character[].class,
int.class, int[].class, Integer.class, Integer[].class,
long.class, long[].class, Long.class, Long[].class,
float.class, float[].class, Float.class, Float[].class,
double.class, double[].class, Double.class, Double[].class,
boolean.class, boolean[].class, Boolean.class, Boolean[].class,
String.class, String[].class
).stream().map(c -> new Object[] {c}).toArray(Object[][]::new);
}
@Test(dataProvider = "notSealedClasses")
public void testNotSealedClasses(Class<?> cls) {
assertTrue(!cls.isSealed());
assertTrue(cls.getPermittedSubclasses() == null);
}
@DataProvider(name = "non_sealedClasses")
public Object[][] non_sealedClassesData() {
return List.of(
NonSealedSubclass1.class,
NonSealedSubInt1.class,
NonSealedSubclass2.class
).stream().map(c -> new Object[] {c}).toArray(Object[][]::new);
}
@Test(dataProvider = "non_sealedClasses")
public void testnon_sealedClasses(Class<?> cls) {
assertTrue(!cls.isSealed());
assertTrue(!Modifier.isFinal(cls.getModifiers()));
assertTrue((cls.getSuperclass() != null && cls.getSuperclass().isSealed()) || Arrays.stream(cls.getInterfaces()).anyMatch(Class::isSealed));
assertTrue(cls.getPermittedSubclasses() == null);
}
@DataProvider(name = "reflectionData")
public Object[][] reflectionData() {
return new Object[][] {
new Object[] {
SealedClass1.class,
2,
new String[] {"SealedClassesReflectionTest$FinalSubclass1", "SealedClassesReflectionTest$NonSealedSubclass1"},
new Class<?>[] {FinalSubclass1.class, NonSealedSubclass1.class},
new SealedStatus[] {SealedStatus.FINAL, SealedStatus.NON_SEALED}},
new Object[] {
SealedClass2.class,
2,
new String[] {"SealedClassesReflectionTest$FinalSubclass2", "SealedClassesReflectionTest$FinalSubclass3"},
new Class<?>[] {FinalSubclass2.class, FinalSubclass3.class},
new SealedStatus[] {SealedStatus.FINAL, SealedStatus.FINAL}},
new Object[] {
SealedClass3.class,
2,
new String[] {"SealedClassesReflectionTest$FinalSubclass4", "SealedClassesReflectionTest$SealedSubclass1"},
new Class<?>[] {FinalSubclass4.class, SealedSubclass1.class},
new SealedStatus[] {SealedStatus.FINAL, SealedStatus.SEALED}},
new Object[] {
SealedSubclass1.class,
1,
new String[] {"SealedClassesReflectionTest$FinalSubclass5"},
new Class<?>[] {FinalSubclass5.class},
new SealedStatus[] {SealedStatus.FINAL}},
new Object[] {
SealedInt1.class,
2,
new String[] {"SealedClassesReflectionTest$FinalSubclass6", "SealedClassesReflectionTest$NonSealedSubInt1"},
new Class<?>[] {FinalSubclass6.class, NonSealedSubInt1.class},
new SealedStatus[] {SealedStatus.FINAL, SealedStatus.NON_SEALED}},
new Object[] {
SealedInt2.class,
2,
new String[] {"SealedClassesReflectionTest$FinalSubclass7", "SealedClassesReflectionTest$FinalSubclass8"},
new Class<?>[] {FinalSubclass7.class, FinalSubclass8.class},
new SealedStatus[] {SealedStatus.FINAL, SealedStatus.FINAL}},
new Object[] {
SealedInt3.class,
3,
new String[] {"SealedClassesReflectionTest$FinalSubclass9",
"SealedClassesReflectionTest$SealedSubInt1",
"SealedClassesReflectionTest$SealedSubclass2"},
new Class<?>[] {FinalSubclass9.class, SealedSubInt1.class, SealedSubclass2.class},
new SealedStatus[] {SealedStatus.FINAL, SealedStatus.SEALED, SealedStatus.SEALED}},
new Object[] {
SealedSubInt1.class,
1,
new String[] {"SealedClassesReflectionTest$FinalSubclass10"},
new Class<?>[] {FinalSubclass10.class},
new SealedStatus[] {SealedStatus.FINAL}},
new Object[] {
SealedSubclass2.class,
1,
new String[] {"SealedClassesReflectionTest$NonSealedSubclass2"},
new Class<?>[] {NonSealedSubclass2.class},
new SealedStatus[] {SealedStatus.NON_SEALED}},
};
}
enum SealedStatus {
SEALED, NON_SEALED, FINAL
}
@Test(dataProvider = "reflectionData")
public void testSealedReflection(Class<?> sealedClass,
int numberOfSubclasses,
String[] subclassDescriptors,
Class<?>[] subclasses,
SealedStatus[] subclassSealedStatus)
throws ReflectiveOperationException
{
assertTrue(sealedClass.isSealed());
assertTrue(sealedClass.getPermittedSubclasses().length == numberOfSubclasses);
int i = 0;
for (Class<?> cd : sealedClass.getPermittedSubclasses()) {
assertTrue(cd.getName().equals(subclassDescriptors[i]), "expected: " + subclassDescriptors[i] + " found: " + cd.getName());
i++;
}
i = 0;
for (Class<?> subclass : subclasses) {
switch (subclassSealedStatus[i++]) {
case SEALED:
assertTrue(subclass.isSealed());
break;
case FINAL:
assertTrue(Modifier.isFinal(subclass.getModifiers()));
break;
case NON_SEALED:
assertTrue(!subclass.isSealed() && !Modifier.isFinal(subclass.getModifiers()));
break;
}
}
}
}
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