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/*
* Copyright (c) 2013, 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
* @run testng Wrappers
* @summary Ensure Collections wrapping classes provide non-default implementations
*/
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Objects;
import java.util.TreeMap;
import java.util.TreeSet;
import org.testng.annotations.Test;
import org.testng.annotations.DataProvider;
import static org.testng.Assert.assertFalse;
@Test(groups = "unit")
public class Wrappers {
static Object[][] collections;
@DataProvider(name="collections")
public static Object[][] collectionCases() {
if (collections != null) {
return collections;
}
List<Object[]> cases = new ArrayList<>();
LinkedList<Integer> seedList = new LinkedList<>();
ArrayList<Integer> seedRandomAccess = new ArrayList<>();
TreeSet<Integer> seedSet = new TreeSet<>();
TreeMap<Integer, Integer> seedMap = new TreeMap<>();
for (int i = 1; i <= 10; i++) {
seedList.add(i);
seedRandomAccess.add(i);
seedSet.add(i);
seedMap.put(i, i);
}
cases.add(new Object[] { Collections.unmodifiableCollection(seedList) });
cases.add(new Object[] { Collections.unmodifiableList(seedList) });
cases.add(new Object[] { Collections.unmodifiableList(seedRandomAccess) });
cases.add(new Object[] { Collections.unmodifiableSet(seedSet) });
cases.add(new Object[] { Collections.unmodifiableSortedSet(seedSet) });
cases.add(new Object[] { Collections.unmodifiableNavigableSet(seedSet) });
// As sets from map also need to be unmodifiable, thus a wrapping
// layer exist and should not have default methods
cases.add(new Object[] { Collections.unmodifiableMap(seedMap).entrySet() });
cases.add(new Object[] { Collections.unmodifiableMap(seedMap).keySet() });
cases.add(new Object[] { Collections.unmodifiableMap(seedMap).values() });
cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).entrySet() });
cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).keySet() });
cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).values() });
cases.add(new Object[] { Collections.unmodifiableNavigableMap(seedMap).entrySet() });
cases.add(new Object[] { Collections.unmodifiableNavigableMap(seedMap).keySet() });
cases.add(new Object[] { Collections.unmodifiableNavigableMap(seedMap).values() });
// Synchronized
cases.add(new Object[] { Collections.synchronizedCollection(seedList) });
cases.add(new Object[] { Collections.synchronizedList(seedList) });
cases.add(new Object[] { Collections.synchronizedList(seedRandomAccess) });
cases.add(new Object[] { Collections.synchronizedSet(seedSet) });
cases.add(new Object[] { Collections.synchronizedSortedSet(seedSet) });
cases.add(new Object[] { Collections.synchronizedNavigableSet(seedSet) });
// As sets from map also need to be synchronized on the map, thus a
// wrapping layer exist and should not have default methods
cases.add(new Object[] { Collections.synchronizedMap(seedMap).entrySet() });
cases.add(new Object[] { Collections.synchronizedMap(seedMap).keySet() });
cases.add(new Object[] { Collections.synchronizedMap(seedMap).values() });
cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).entrySet() });
cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).keySet() });
cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).values() });
cases.add(new Object[] { Collections.synchronizedNavigableMap(seedMap).entrySet() });
cases.add(new Object[] { Collections.synchronizedNavigableMap(seedMap).keySet() });
cases.add(new Object[] { Collections.synchronizedNavigableMap(seedMap).values() });
// Checked
cases.add(new Object[] { Collections.checkedCollection(seedList, Integer.class) });
cases.add(new Object[] { Collections.checkedList(seedList, Integer.class) });
cases.add(new Object[] { Collections.checkedList(seedRandomAccess, Integer.class) });
cases.add(new Object[] { Collections.checkedSet(seedSet, Integer.class) });
cases.add(new Object[] { Collections.checkedSortedSet(seedSet, Integer.class) });
cases.add(new Object[] { Collections.checkedNavigableSet(seedSet, Integer.class) });
cases.add(new Object[] { Collections.checkedQueue(seedList, Integer.class) });
// asLifoQueue is another wrapper
cases.add(new Object[] { Collections.asLifoQueue(seedList) });
collections = cases.toArray(new Object[0][]);
return collections;
}
static Method[] defaultMethods;
static {
List<Method> list = new ArrayList<>();
Method[] methods = Collection.class.getMethods();
for (Method m: methods) {
if (m.isDefault()) {
list.add(m);
}
}
defaultMethods = list.toArray(new Method[0]);
}
@Test(dataProvider = "collections")
public static void testAllDefaultMethodsOverridden(Collection c) throws NoSuchMethodException {
Class cls = c.getClass();
for (Method m: defaultMethods) {
Method m2 = cls.getMethod(m.getName(), m.getParameterTypes());
// default had been override
assertFalse(m2.isDefault(), cls.getCanonicalName());
}
}
}
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