1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @run testng Wrappers 27 * @summary Ensure Collections wrapping classes provide non-default implementations 28 */ 29 30 import java.lang.reflect.Method; 31 import java.util.ArrayList; 32 import java.util.Collection; 33 import java.util.Collections; 34 import java.util.LinkedList; 35 import java.util.List; 36 import java.util.Objects; 37 import java.util.TreeMap; 38 import java.util.TreeSet; 39 40 import org.testng.annotations.Test; 41 import org.testng.annotations.DataProvider; 42 43 import static org.testng.Assert.assertFalse; 44 45 @Test(groups = "unit") 46 public class Wrappers { 47 static Object[][] collections; 48 49 @DataProvider(name="collections") collectionCases()50 public static Object[][] collectionCases() { 51 if (collections != null) { 52 return collections; 53 } 54 55 List<Object[]> cases = new ArrayList<>(); 56 LinkedList<Integer> seedList = new LinkedList<>(); 57 ArrayList<Integer> seedRandomAccess = new ArrayList<>(); 58 TreeSet<Integer> seedSet = new TreeSet<>(); 59 TreeMap<Integer, Integer> seedMap = new TreeMap<>(); 60 61 for (int i = 1; i <= 10; i++) { 62 seedList.add(i); 63 seedRandomAccess.add(i); 64 seedSet.add(i); 65 seedMap.put(i, i); 66 } 67 68 cases.add(new Object[] { Collections.unmodifiableCollection(seedList) }); 69 cases.add(new Object[] { Collections.unmodifiableList(seedList) }); 70 cases.add(new Object[] { Collections.unmodifiableList(seedRandomAccess) }); 71 cases.add(new Object[] { Collections.unmodifiableSet(seedSet) }); 72 cases.add(new Object[] { Collections.unmodifiableSortedSet(seedSet) }); 73 cases.add(new Object[] { Collections.unmodifiableNavigableSet(seedSet) }); 74 75 // As sets from map also need to be unmodifiable, thus a wrapping 76 // layer exist and should not have default methods 77 cases.add(new Object[] { Collections.unmodifiableMap(seedMap).entrySet() }); 78 cases.add(new Object[] { Collections.unmodifiableMap(seedMap).keySet() }); 79 cases.add(new Object[] { Collections.unmodifiableMap(seedMap).values() }); 80 cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).entrySet() }); 81 cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).keySet() }); 82 cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).values() }); 83 cases.add(new Object[] { Collections.unmodifiableNavigableMap(seedMap).entrySet() }); 84 cases.add(new Object[] { Collections.unmodifiableNavigableMap(seedMap).keySet() }); 85 cases.add(new Object[] { Collections.unmodifiableNavigableMap(seedMap).values() }); 86 87 // Synchronized 88 cases.add(new Object[] { Collections.synchronizedCollection(seedList) }); 89 cases.add(new Object[] { Collections.synchronizedList(seedList) }); 90 cases.add(new Object[] { Collections.synchronizedList(seedRandomAccess) }); 91 cases.add(new Object[] { Collections.synchronizedSet(seedSet) }); 92 cases.add(new Object[] { Collections.synchronizedSortedSet(seedSet) }); 93 cases.add(new Object[] { Collections.synchronizedNavigableSet(seedSet) }); 94 95 // As sets from map also need to be synchronized on the map, thus a 96 // wrapping layer exist and should not have default methods 97 cases.add(new Object[] { Collections.synchronizedMap(seedMap).entrySet() }); 98 cases.add(new Object[] { Collections.synchronizedMap(seedMap).keySet() }); 99 cases.add(new Object[] { Collections.synchronizedMap(seedMap).values() }); 100 cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).entrySet() }); 101 cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).keySet() }); 102 cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).values() }); 103 cases.add(new Object[] { Collections.synchronizedNavigableMap(seedMap).entrySet() }); 104 cases.add(new Object[] { Collections.synchronizedNavigableMap(seedMap).keySet() }); 105 cases.add(new Object[] { Collections.synchronizedNavigableMap(seedMap).values() }); 106 107 // Checked 108 cases.add(new Object[] { Collections.checkedCollection(seedList, Integer.class) }); 109 cases.add(new Object[] { Collections.checkedList(seedList, Integer.class) }); 110 cases.add(new Object[] { Collections.checkedList(seedRandomAccess, Integer.class) }); 111 cases.add(new Object[] { Collections.checkedSet(seedSet, Integer.class) }); 112 cases.add(new Object[] { Collections.checkedSortedSet(seedSet, Integer.class) }); 113 cases.add(new Object[] { Collections.checkedNavigableSet(seedSet, Integer.class) }); 114 cases.add(new Object[] { Collections.checkedQueue(seedList, Integer.class) }); 115 116 // asLifoQueue is another wrapper 117 cases.add(new Object[] { Collections.asLifoQueue(seedList) }); 118 119 collections = cases.toArray(new Object[0][]); 120 return collections; 121 } 122 123 static Method[] defaultMethods; 124 125 static { 126 List<Method> list = new ArrayList<>(); 127 Method[] methods = Collection.class.getMethods(); 128 for (Method m: methods) { 129 if (m.isDefault()) { 130 list.add(m); 131 } 132 } 133 defaultMethods = list.toArray(new Method[0]); 134 } 135 136 @Test(dataProvider = "collections") testAllDefaultMethodsOverridden(Collection c)137 public static void testAllDefaultMethodsOverridden(Collection c) throws NoSuchMethodException { 138 Class cls = c.getClass(); 139 for (Method m: defaultMethods) { 140 Method m2 = cls.getMethod(m.getName(), m.getParameterTypes()); 141 // default had been override 142 assertFalse(m2.isDefault(), cls.getCanonicalName()); 143 } 144 } 145 } 146 147