/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.harmony.tests.java.util;
import org.apache.harmony.testframework.serialization.SerializationTest;
import org.apache.harmony.testframework.serialization.SerializationTest.SerializableAssert;
import tests.support.Support_CollectionTest;
import tests.support.Support_ListTest;
import tests.support.Support_SetTest;
import tests.support.Support_UnmodifiableCollectionTest;
import java.io.Serializable;
import java.lang.reflect.Array;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Deque;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Queue;
import java.util.Random;
import java.util.RandomAccess;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
public class CollectionsTest extends junit.framework.TestCase {
private LinkedList ll;
private LinkedList myll;
private LinkedList reversedLinkedList;
private LinkedList myReversedLinkedList;
private Set s;
private Set mys;
private HashMap hm;
private Integer[] objArray;
private Object[] myobjArray;
public static class ReversedMyIntComparator implements Comparator {
public int compare(Object o1, Object o2) {
return -((MyInt) o1).compareTo((MyInt) o2);
}
public int equals(Object o1, Object o2) {
return ((MyInt) o1).compareTo((MyInt) o2);
}
}
public static class SynchCollectionChecker implements Runnable {
Collection col;
int colSize;
int totalToRun;
boolean offset;
volatile int numberOfChecks = 0;
boolean result = true;
ArrayList normalCountingList;
ArrayList offsetCountingList;
public void run() {
// ensure the list either contains the numbers from 0 to size-1 or
// the numbers from size to 2*size -1
while (numberOfChecks < totalToRun) {
synchronized (col) {
if (!(col.isEmpty() || col.containsAll(normalCountingList) || col
.containsAll(offsetCountingList)))
result = false;
col.clear();
}
if (offset)
col.addAll(offsetCountingList);
else
col.addAll(normalCountingList);
numberOfChecks++;
}
}
public SynchCollectionChecker(Collection c, boolean offset,
int totalChecks) {
// The collection to test, whether to offset the filler values by
// size or not, and the min number of iterations to run
totalToRun = totalChecks;
col = c;
colSize = c.size();
normalCountingList = new ArrayList(colSize);
offsetCountingList = new ArrayList(colSize);
for (int i = 0; i < colSize; i++)
normalCountingList.add(new Integer(i));
for (int i = 0; i < colSize; i++)
offsetCountingList.add(new Integer(i + colSize));
col.clear();
if (offset)
col.addAll(offsetCountingList);
else
col.addAll(normalCountingList);
}
public boolean offset() {
// answer true iff the list is filled with a counting sequence
// starting at the value size to 2*size - 1
// else the list with be filled starting at 0 to size - 1
return offset;
}
public boolean getResult() {
// answer true iff no corruption has been found in the collection
return result;
}
public int getNumberOfChecks() {
// answer the number of checks that have been performed on the list
return numberOfChecks;
}
}
public static class SynchMapChecker implements Runnable {
Map map;
int mapSize;
int totalToRun;
boolean offset;
volatile int numberOfChecks = 0;
boolean result = true;
Map normalCountingMap;
Map offsetCountingMap;
public void run() {
Object firstNormalValue = normalCountingMap.get(new Integer(0));
Object lastNormalValue = normalCountingMap.get(new Integer(
mapSize - 1));
Object firstOffsetValue = offsetCountingMap
.get(new Integer(mapSize));
Object lastOffsetValue = offsetCountingMap.get(new Integer(
2 * mapSize - 1));
// ensure the list either contains the numbers from 0 to size-1 or
// the numbers from size to 2*size -1
while (numberOfChecks < totalToRun) {
synchronized (map) {
if (!(map.isEmpty()
|| (map.containsValue(firstNormalValue) && map
.containsValue(lastNormalValue)) || (map
.containsValue(firstOffsetValue) && map
.containsValue(lastOffsetValue))))
result = false;
map.clear();
}
if (offset)
map.putAll(offsetCountingMap);
else
map.putAll(normalCountingMap);
numberOfChecks++;
}
}
public SynchMapChecker(Map m, boolean offset, int totalChecks) {
// The collection to test, whether to offset the filler values by
// size or not, and the min number of iterations to run
Integer myInt;
totalToRun = totalChecks;
map = m;
mapSize = m.size();
normalCountingMap = new HashMap(mapSize);
offsetCountingMap = new HashMap(mapSize);
for (int i = 0; i < mapSize; i++) {
myInt = new Integer(i);
normalCountingMap.put(myInt, myInt);
}
for (int i = 0; i < mapSize; i++) {
myInt = new Integer(i + mapSize);
offsetCountingMap.put(myInt, myInt);
}
map.clear();
if (offset)
map.putAll(offsetCountingMap);
else
map.putAll(normalCountingMap);
}
public boolean offset() {
// answer true iff the list is filled with a counting sequence
// starting at the value size to 2*size - 1
// else the list with be filled starting at 0 to size - 1
return offset;
}
public boolean getResult() {
// answer true iff no corruption has been found in the collection
return result;
}
public int getNumberOfChecks() {
// answer the number of checks that have been performed on the list
return numberOfChecks;
}
}
static class MyInt {
int data;
public MyInt(int value) {
data = value;
}
public int compareTo(MyInt object) {
return data > object.data ? 1 : (data < object.data ? -1 : 0);
}
}
public void test_binarySearchLjava_util_ListLjava_lang_Object() {
// Test for method int
// java.util.Collections.binarySearch(java.util.List, java.lang.Object)
// assumes ll is sorted and has no duplicate keys
final int llSize = ll.size();
// Ensure a NPE is thrown if the list is NULL
try {
Collections.binarySearch(null, new Object());
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
for (int i = 0; i < llSize; i++) {
assertEquals("Returned incorrect binary search item position", ll
.get(i), ll.get(Collections.binarySearch(ll, ll
.get(i))));
}
}
public void test_binarySearchLjava_util_ListLjava_lang_ObjectLjava_util_Comparator() {
// Test for method int
// java.util.Collections.binarySearch(java.util.List, java.lang.Object,
// java.util.Comparator)
// assumes reversedLinkedList is sorted in reversed order and has no
// duplicate keys
final int rSize = myReversedLinkedList.size();
ReversedMyIntComparator comp = new ReversedMyIntComparator();
// Ensure a NPE is thrown if the list is NULL
try {
Collections.binarySearch(null, new Object(), comp);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
for (int i = 0; i < rSize; i++) {
assertEquals(
"Returned incorrect binary search item position using custom comparator",
myReversedLinkedList.get(i), myReversedLinkedList
.get(Collections.binarySearch(myReversedLinkedList,
myReversedLinkedList.get(i), comp)));
}
}
class Mock_ArrayList extends ArrayList {
@Override
public
Object set (int index, Object o){
throw new UnsupportedOperationException();
}
}
public void test_copyLjava_util_ListLjava_util_List() {
// Test for method void java.util.Collections.copy(java.util.List,
// java.util.List)
// Ensure a NPE is thrown if the list is NULL
try {
Collections.copy(null, ll);
fail("Expected NullPointerException for null list first parameter");
} catch (NullPointerException e) {
//Expected
}
try {
Collections.copy(ll, null);
fail("Expected NullPointerException for null list second parameter");
} catch (NullPointerException e) {
//Expected
}
final int llSize = ll.size();
ll.set(25, null);
ArrayList al = new ArrayList();
Integer extraElement = new Integer(1);
Integer extraElement2 = new Integer(2);
al.addAll(myReversedLinkedList);
al.add(extraElement);
al.add(extraElement2);
Collections.copy(al, ll);
for (int i = 0; i < llSize; i++) {
assertEquals("Elements do not match after copying collection", ll
.get(i), al.get(i));
}
assertTrue("Elements after copied elements affected by copy",
extraElement == al.get(llSize)
&& extraElement2 == al.get(llSize + 1));
ArrayList ar1 = new ArrayList();
ArrayList ar2 = new ArrayList();
int i;
for(i = 0; i < 5; i ++) {
ar2.add(new Integer(i));
}
for(i = 0; i < 10; i ++) {
ar1.add(new Integer(i));
}
try {
Collections.copy(ar2, ar1);
fail("IndexOutOfBoundsException expected");
} catch (IndexOutOfBoundsException e) {
//expected
}
Mock_ArrayList mal1 = new Mock_ArrayList();
Mock_ArrayList mal2 = new Mock_ArrayList();
for(i = 0; i < 10; i ++) {
mal1.add(new Integer(i));
mal2.add(new Integer(10 - i));
}
try {
Collections.copy(mal1, mal2);
fail("UnsupportedOperationException expected");
} catch (UnsupportedOperationException e) {
//expected
}
}
public void test_copy_check_index() {
ArrayList a1 = new ArrayList();
a1.add("one");
a1.add("two");
ArrayList a2 = new ArrayList();
a2.add("aa");
try {
Collections.copy(a2, a1);
fail("Expected IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
//Expected
}
assertEquals("aa", a2.get(0));
}
public void test_enumerationLjava_util_Collection() {
// Test for method java.util.Enumeration
// java.util.Collections.enumeration(java.util.Collection)
TreeSet ts = new TreeSet();
ts.addAll(s);
Enumeration e = Collections.enumeration(ts);
int count = 0;
while (e.hasMoreElements()) {
assertEquals("Returned incorrect enumeration", e.nextElement(),
objArray[count++]);
}
assertEquals("Enumeration missing elements: " + count, objArray.length,
count);
}
public void test_fillLjava_util_ListLjava_lang_Object() {
// Test for method void java.util.Collections.fill(java.util.List,
// java.lang.Object)
try {
Collections.fill(null, new Object());
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
final int size = ll.size();
Collections.fill(ll, "k");
assertEquals("Fill modified list size", size, ll.size());
Iterator i = ll.iterator();
while (i.hasNext())
assertEquals("Failed to fill elements", "k", i.next());
Collections.fill(ll, null);
assertEquals("Fill with nulls modified list size", size, ll.size());
i = ll.iterator();
while (i.hasNext())
assertNull("Failed to fill with nulls", i.next());
Mock_ArrayList mal = new Mock_ArrayList();
mal.add("one");
mal.add("two");
try {
Collections.fill(mal, "value");
fail("UnsupportedOperationException ecpected");
} catch (UnsupportedOperationException e) {
//expected
}
}
public void test_maxLjava_util_Collection() {
// Test for method java.lang.Object
// java.util.Collections.max(java.util.Collection)
// assumes s, objArray are sorted
assertEquals("Returned incorrect max element", Collections.max(s),
objArray[objArray.length - 1]);
ArrayList al = new ArrayList();
try {
Collections.max(al);
fail("NoSuchElementException expected");
} catch (NoSuchElementException e) {
//expected
}
al.add("String");
al.add(new Integer(1));
al.add(new Double(3.14));
try {
Collections.max(al);
fail("ClassCastException expected");
} catch (ClassCastException e) {
//expected
}
}
public void test_maxLjava_util_CollectionLjava_util_Comparator() {
// Test for method java.lang.Object
// java.util.Collections.max(java.util.Collection, java.util.Comparator)
// assumes s, objArray are sorted
// With this custom (backwards) comparator the 'max' element should be
// the smallest in the list
assertEquals("Returned incorrect max element using custom comparator",
Collections.max(mys, new ReversedMyIntComparator()),
myobjArray[0]);
}
public void test_minLjava_util_Collection() {
// Test for method java.lang.Object
// java.util.Collections.min(java.util.Collection)
// assumes s, objArray are sorted
assertEquals("Returned incorrect min element", Collections.min(s),
objArray[0]);
}
public void test_minLjava_util_CollectionLjava_util_Comparator() {
// Test for method java.lang.Object
// java.util.Collections.min(java.util.Collection, java.util.Comparator)
// assumes s, objArray are sorted
// With this custom (backwards) comparator the 'min' element should be
// the largest in the list
assertEquals("Returned incorrect min element using custom comparator",
Collections.min(mys, new ReversedMyIntComparator()),
myobjArray[objArray.length - 1]);
}
public void test_nCopiesILjava_lang_Object() {
// Test for method java.util.List java.util.Collections.nCopies(int,
// java.lang.Object)
Object o = new Object();
List l = Collections.nCopies(100, o);
Iterator iterator = l.iterator();
Object first = iterator.next();
assertEquals("Returned list consists of copies not refs", first, o);
assertEquals("Returned list of incorrect size", 100, l.size());
assertTrue("Contains", l.contains(o));
assertFalse("Contains null", l.contains(null));
assertFalse("null nCopies contains", Collections.nCopies(2, null)
.contains(o));
assertTrue("null nCopies contains null", Collections.nCopies(2, null)
.contains(null));
l = Collections.nCopies(20, null);
iterator = l.iterator();
for (int i = 0; iterator.hasNext(); i++) {
assertTrue("List is too large", i < 20);
assertNull("Element should be null: " + i, iterator.next());
}
try {
l.add(o);
fail("Returned list is not immutable");
} catch (UnsupportedOperationException e) {
// Expected
}
try {
Collections.nCopies(-2, new HashSet());
fail("nCopies with negative arg didn't throw IAE");
} catch (IllegalArgumentException e) {
// Expected
}
}
public void test_reverseLjava_util_List() {
// Test for method void java.util.Collections.reverse(java.util.List)
try {
Collections.reverse(null);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
Collections.reverse(ll);
Iterator i = ll.iterator();
int count = objArray.length - 1;
while (i.hasNext()) {
assertEquals("Failed to reverse collection", objArray[count], i
.next());
--count;
}
ArrayList myList = new ArrayList();
myList.add(null);
myList.add(new Integer(20));
Collections.reverse(myList);
assertEquals("Did not reverse correctly--first element is: "
+ myList.get(0), new Integer(20), myList.get(0));
assertNull("Did not reverse correctly--second element is: "
+ myList.get(1), myList.get(1));
}
public void test_reverseOrder() {
// Test for method java.util.Comparator
// java.util.Collections.reverseOrder()
// assumes no duplicates in ll
Comparator comp = Collections.reverseOrder();
LinkedList list2 = new LinkedList(ll);
Collections.sort(list2, comp);
final int llSize = ll.size();
for (int i = 0; i < llSize; i++)
assertEquals("New comparator does not reverse sorting order", list2
.get(llSize - i - 1), ll.get(i));
}
public void test_shuffleLjava_util_List() {
// Test for method void java.util.Collections.shuffle(java.util.List)
// Assumes ll is sorted and has no duplicate keys and is large ( > 20
// elements)
// test shuffling a Sequential Access List
try {
Collections.shuffle(null);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
ArrayList al = new ArrayList();
al.addAll(ll);
testShuffle(al, "Sequential Access", false);
// test shuffling a Random Access List
LinkedList ll2 = new LinkedList();
ll2.addAll(ll);
testShuffle(ll2, "Random Access", false);
}
public void testShuffleRandomAccessWithSeededRandom() {
List<String> list = Arrays.asList("A", "B", "C", "D", "E", "F", "G");
Collections.shuffle(list, new Random(0));
assertEquals(Arrays.asList("B", "A", "D", "C", "G", "E", "F"), list);
}
public void testShuffleWithSeededRandom() {
List<String> list = new LinkedList<String>(Arrays.asList(
"A", "B", "C", "D", "E", "F", "G"));
Collections.shuffle(list, new Random(0));
assertEquals(Arrays.asList("B", "A", "D", "C", "G", "E", "F"), list);
}
private void testShuffle(List list, String type, boolean random) {
boolean sorted = true;
boolean allMatch = true;
int index = 0;
final int size = list.size();
if (random)
Collections.shuffle(list);
else
Collections.shuffle(list, new Random(200));
for (int i = 0; i < size - 1; i++) {
if (((Integer) list.get(i)).compareTo((Integer) list.get(i + 1)) > 0) {
sorted = false;
}
}
assertFalse("Shuffling sorted " + type
+ " list resulted in sorted list (should be unlikely)", sorted);
for (int i = 0; i < 20; i++) {
index = 30031 * i % (size + 1); // 30031 is a large prime
if (list.get(index) != ll.get(index))
allMatch = false;
}
assertFalse("Too many element positions match in shuffled " + type
+ " list", allMatch);
}
public void test_shuffleLjava_util_ListLjava_util_Random() {
// Test for method void java.util.Collections.shuffle(java.util.List,
// java.util.Random)
// Assumes ll is sorted and has no duplicate keys and is large ( > 20
// elements)
// test shuffling a Sequential Access List
try {
Collections.shuffle(null, new Random(200));
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Excepted
}
ArrayList al = new ArrayList();
al.addAll(ll);
testShuffle(al, "Sequential Access", true);
// test shuffling a Random Access List
LinkedList ll2 = new LinkedList();
ll2.addAll(ll);
testShuffle(ll2, "Random Access", true);
List l = new ArrayList();
l.add('a');
l.add('b');
l.add('c');
Collections.shuffle(l, new Random(12345678921L));
assertEquals("acb", l.get(0).toString() + l.get(1) + l.get(2));
}
public void test_singletonLjava_lang_Object() {
// Test for method java.util.Set
// java.util.Collections.singleton(java.lang.Object)
Object o = new Object();
Set single = Collections.singleton(o);
assertEquals("Wrong size", 1, single.size());
assertTrue("Contains", single.contains(o));
assertFalse("Contains null", single.contains(null));
assertFalse("null nCopies contains", Collections.singleton(null)
.contains(o));
assertTrue("null nCopies contains null", Collections.singleton(null)
.contains(null));
try {
single.add("l");
fail("Allowed modification of singleton");
} catch (UnsupportedOperationException e) {
// Excepted
}
}
public void test_sortLjava_util_List() {
// Test for method void java.util.Collections.sort(java.util.List)
// assumes no duplicate keys in ll
final int llSize = ll.size();
final int rllSize = reversedLinkedList.size();
try {
Collections.sort((List) null);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
Collections.shuffle(ll);
Collections.sort(ll);
Collections.sort(reversedLinkedList);
for (int i = 0; i < llSize - 1; i++) {
assertTrue(
"Sorting shuffled list resulted in unsorted list",
((Integer) ll.get(i)).compareTo((Integer) ll.get(i + 1)) < 0);
}
for (int i = 0; i < rllSize - 1; i++) {
assertTrue("Sorting reversed list resulted in unsorted list",
((Integer) reversedLinkedList.get(i))
.compareTo((Integer) reversedLinkedList.get(i + 1)) < 0);
}
}
public void test_sortLjava_util_ListLjava_util_Comparator() {
// Test for method void java.util.Collections.sort(java.util.List,
// java.util.Comparator)
Comparator comp = new ReversedMyIntComparator();
try {
Collections.sort(null, comp);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
Collections.shuffle(myll);
Collections.sort(myll, comp);
final int llSize = myll.size();
for (int i = 0; i < llSize - 1; i++) {
assertTrue(
"Sorting shuffled list with custom comparator resulted in unsorted list",
((MyInt) myll.get(i)).compareTo((MyInt) myll
.get(i + 1)) >= 0);
}
ArrayList al = new ArrayList();
al.add("String");
al.add(new Integer(1));
al.add(new Double(3.14));
try {
Collections.sort(al, comp);
fail("ClassCastException expected");
} catch (ClassCastException e) {
//expected
}
Mock_ArrayList mal = new Mock_ArrayList();
mal.add(new MyInt(1));
mal.add(new MyInt(2));
try {
Collections.sort(mal, comp);
fail("UnsupportedOperationException expected");
} catch (UnsupportedOperationException e) {
//expected
}
}
public void test_swapLjava_util_ListII() {
// Test for method swap(java.util.List, int, int)
LinkedList smallList = new LinkedList();
for (int i = 0; i < 10; i++) {
smallList.add(objArray[i]);
}
// test exception cases
try {
Collections.swap(smallList, -1, 6);
fail("Expected IndexOutOfBoundsException for -1");
} catch (IndexOutOfBoundsException e) {
//Expected
}
try {
Collections.swap(smallList, 6, -1);
fail("Expected IndexOutOfBoundsException for -1");
} catch (IndexOutOfBoundsException e) {
//Expected
}
try {
Collections.swap(smallList, 6, 11);
fail("Expected IndexOutOfBoundsException for 11");
} catch (IndexOutOfBoundsException e) {
//Expected
}
try {
Collections.swap(smallList, 11, 6);
fail("Expected IndexOutOfBoundsException for 11");
} catch (IndexOutOfBoundsException e) {
//Expected
}
// Ensure a NPE is thrown if the list is NULL
try {
Collections.swap(null, 1, 1);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
// test with valid parameters
Collections.swap(smallList, 4, 7);
assertEquals("Didn't Swap the element at position 4 ", new Integer(7),
smallList.get(4));
assertEquals("Didn't Swap the element at position 7 ", new Integer(4),
smallList.get(7));
// make sure other elements didn't get swapped by mistake
for (int i = 0; i < 10; i++) {
if (i != 4 && i != 7)
assertEquals("shouldn't have swapped the element at position "
+ i, new Integer(i), smallList.get(i));
}
}
public void test_replaceAllLjava_util_ListLjava_lang_ObjectLjava_lang_Object() {
// Test for method replaceAll(java.util.List, java.lang.Object,
// java.lang.Object)
String string1 = "A-B-C-D-E-S-JF-SUB-G-H-I-J-SUBL-K-L-LIST-M-N--S-S-O-SUBLIS-P-Q-R-SUBLIST-S-T-U-V-W-X-Y-Z";
char[] chars = string1.toCharArray();
List list = new ArrayList();
for (int i = 0; i < chars.length; i++) {
list.add(new Character(chars[i]));
}
try {
Collections.replaceAll(null, new Object(), new Object());
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
// test replace for an element that is not in the list
boolean result = Collections.replaceAll(list, new Character('1'),
new Character('Z'));
assertFalse("Test1: Collections.replaceAll() returned wrong result",
result);
assertEquals("Test2 : ReplaceAll modified the list incorrectly",
string1, getString(list));
// test replace for an element that is in the list
result = Collections.replaceAll(list, new Character('S'),
new Character('K'));
assertTrue("Test3: Collections.replaceAll() returned wrong result",
result);
assertEquals("Test4: ReplaceAll modified the list incorrectly",
(string1 = string1.replace('S', 'K')), getString(list));
// test replace for the last element in the list
result = Collections.replaceAll(list, new Character('Z'),
new Character('N'));
assertTrue("Test5: Collections.replaceAll() returned wrong result",
result);
assertEquals("Test6: ReplaceAll modified the list incorrectly",
(string1 = string1.replace('Z', 'N')), getString(list));
// test replace for the first element in the list
result = Collections.replaceAll(list, new Character('A'),
new Character('B'));
assertTrue("Test7: Collections.replaceAll() returned wrong result",
result);
assertEquals("Test8: ReplaceAll modified the list incorrectly",
(string1 = string1.replace('A', 'B')), getString(list));
// test replacing elements with null
LinkedList smallList = new LinkedList();
for (int i = 0; i < 10; i++) {
smallList.add(objArray[i]);
}
smallList.set(4, new Integer(5));
result = Collections.replaceAll(smallList, new Integer(5), null);
assertTrue("Test9: Collections.replaceAll() returned wrong result",
result);
for (int i = 0; i < smallList.size(); i++) {
if (i == 4 || i == 5)
assertSame("Test9: ReplaceAll didn't replace element at " + i,
null, smallList.get(i));
else
assertEquals(
"Test9: ReplaceAll shouldn't have replaced element at "
+ i, new Integer(i), smallList.get(i));
}
// test replacing null elements with another value
result = Collections.replaceAll(smallList, null, new Integer(99));
assertTrue("Test10: Collections.replaceAll() returned wrong result",
result);
for (int i = 0; i < smallList.size(); i++) {
if (i == 4 || i == 5)
assertEquals("Test10: ReplaceAll didn't replace element at "
+ i, new Integer(99), smallList.get(i));
else
assertEquals(
"Test10: ReplaceAll shouldn't have replaced element at "
+ i, new Integer(i), smallList.get(i));
}
Mock_ArrayList mal = new Mock_ArrayList();
mal.add("First");
mal.add("Second");
try {
Collections.replaceAll(mal, "Second", null);
fail("UnsupportedOperationException expected");
} catch (UnsupportedOperationException e) {
//expected
}
}
public void test_rotateLjava_util_ListI() {
// Test for method rotate(java.util.List, int)
try {
Collections.rotate(null, 0);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
// Test rotating a Sequential Access List
LinkedList list1 = new LinkedList();
for (int i = 0; i < 10; i++) {
list1.add(objArray[i]);
}
testRotate(list1, "Sequential Access");
// Test rotating a Random Access List
ArrayList list2 = new ArrayList();
for (int i = 0; i < 10; i++) {
list2.add(objArray[i]);
}
testRotate(list2, "Random Access");
}
private void testRotate(List list, String type) {
// rotate with positive distance
Collections.rotate(list, 7);
assertEquals("Test1: rotate modified the " + type
+ " list incorrectly,", "3456789012", getString(list));
// rotate with negative distance
Collections.rotate(list, -2);
assertEquals("Test2: rotate modified the " + type
+ " list incorrectly,", "5678901234", getString(list));
// rotate sublist with negative distance
List subList = list.subList(1, 5);
Collections.rotate(subList, -1);
assertEquals("Test3: rotate modified the " + type
+ " list incorrectly,", "5789601234", getString(list));
// rotate sublist with positive distance
Collections.rotate(subList, 2);
assertEquals("Test4: rotate modified the " + type
+ " list incorrectly,", "5967801234", getString(list));
// rotate with positive distance that is larger than list size
Collections.rotate(list, 23);
assertEquals("Test5: rotate modified the " + type
+ " list incorrectly,", "2345967801", getString(list));
// rotate with negative distance that is larger than list size
Collections.rotate(list, -23);
assertEquals("Test6: rotate modified the " + type
+ " list incorrectly,", "5967801234", getString(list));
// rotate with 0 and equivalent distances, this should make no
// modifications to the list
Collections.rotate(list, 0);
assertEquals("Test7: rotate modified the " + type
+ " list incorrectly,", "5967801234", getString(list));
Collections.rotate(list, -30);
assertEquals("Test8: rotate modified the " + type
+ " list incorrectly,", "5967801234", getString(list));
Collections.rotate(list, 30);
assertEquals("Test9: rotate modified the " + type
+ " list incorrectly,", "5967801234", getString(list));
}
private String getString(List list) {
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < list.size(); i++) {
buffer.append(list.get(i));
}
return buffer.toString();
}
public void test_rotate2() {
List list = new ArrayList();
try {
Collections.rotate(list, 5);
} catch (UnsupportedOperationException e) {
fail("Unexpected UnsupportedOperationException for empty list, "
+ e);
}
list.add(0, "zero");
list.add(1, "one");
list.add(2, "two");
list.add(3, "three");
list.add(4, "four");
Collections.rotate(list, Integer.MIN_VALUE);
assertEquals("Rotated incorrectly at position 0, ", "three",
(String) list.get(0));
assertEquals("Rotated incorrectly at position 1, ", "four",
(String) list.get(1));
assertEquals("Rotated incorrectly at position 2, ", "zero",
(String) list.get(2));
assertEquals("Rotated incorrectly at position 3, ", "one",
(String) list.get(3));
assertEquals("Rotated incorrectly at position 4, ", "two",
(String) list.get(4));
}
public void test_indexOfSubListLjava_util_ListLjava_util_List() {
// Test for method int indexOfSubList(java.util.List, java.util.List)
List list = new ArrayList();
try {
Collections.indexOfSubList(null, list);
fail("Expected NullPointerException for null list first parameter");
} catch (NullPointerException e) {
//Expected
}
try {
Collections.indexOfSubList(list, null);
fail("Expected NullPointerException for null list second parameter");
} catch (NullPointerException e) {
//Expected
}
String string1 = "A-B-C-D-E-S-JF-SUB-G-H-I-J-SUBL-K-L-LIST-M-N--S-S-O-SUBLIS-P-Q-R-SUBLIST-S-T-U-V-W-X-Y-Z";
testwithCharList(1, string1, "B", true);
testwithCharList(2, string1, "LIST", true);
testwithCharList(3, string1, "SUBLIST", true);
testwithCharList(4, string1, "NONE", true);
testwithCharList(5, string1, "END", true);
// test boundary conditions:
testwithCharList(6, "", "", true);
testwithCharList(7, "LIST", "", true);
testwithCharList(8, "", "SUBLIST", true);
}
public void test_indexOfSubList2() {
ArrayList sub = new ArrayList();
sub.add(new Integer(1));
sub.add(new Integer(2));
sub.add(new Integer(3));
ArrayList sub2 = new ArrayList();
sub2.add(new Integer(7));
sub2.add(new Integer(8));
ArrayList src = new ArrayList();
src.addAll(sub);
src.addAll(sub);
src.addAll(sub);
src.add(new Integer(5));
src.add(new Integer(6));
// so src becomes a list like this:
// [1, 2, 3, 1, 2, 3, 1, 2, 3, 5, 6]
sub = new ArrayList(src.subList(3, 11));
// [1, 2, 3, 1, 2, 3, 5, 6]
assertEquals("TestA : Returned wrong indexOfSubList, ", 3, Collections
.indexOfSubList(src, sub));
sub = new ArrayList(src.subList(6, 11));
// [1, 2, 3, 5, 6]
assertEquals("TestB : Returned wrong indexOfSubList, ", 6, Collections
.indexOfSubList(src, sub));
sub = new ArrayList(src.subList(0, 3));
// [1, 2, 3]
assertEquals("TestCC : Returned wrong indexOfSubList, ", 0, Collections
.indexOfSubList(src, sub));
sub = new ArrayList(src.subList(9, 11));
// [5, 6]
assertEquals("TestD : Returned wrong indexOfSubList, ", 9, Collections
.indexOfSubList(src, sub));
sub = new ArrayList(src.subList(10, 11));
// [6]
assertEquals("TestE : Returned wrong indexOfSubList, ", 10, Collections
.indexOfSubList(src, sub));
sub = new ArrayList(src.subList(0, 11));
// the whole list
assertEquals("TestH : Returned wrong indexIndexOfSubList, ", 0,
Collections.indexOfSubList(src, sub));
// a non-matching list
assertEquals("TestI : Returned wrong indexOfSubList, ", -1, Collections
.indexOfSubList(src, sub2));
}
private void testwithCharList(int count, String string1, String string2,
boolean first) {
char[] chars = string1.toCharArray();
List list = new ArrayList();
for (int i = 0; i < chars.length; i++) {
list.add(new Character(chars[i]));
}
chars = string2.toCharArray();
List sublist = new ArrayList();
for (int i = 0; i < chars.length; i++) {
sublist.add(new Character(chars[i]));
}
if (first)
assertEquals("Test " + count + ": Returned wrong index:", string1
.indexOf(string2), Collections
.indexOfSubList(list, sublist));
else
assertEquals("Test " + count + ": Returned wrong index:", string1
.lastIndexOf(string2), Collections.lastIndexOfSubList(list,
sublist));
}
public void test_lastIndexOfSubListLjava_util_ListLjava_util_List() {
// Test for method int lastIndexOfSubList(java.util.List,
// java.util.List)
String string1 = "A-B-C-D-E-S-JF-SUB-G-H-I-J-SUBL-K-L-LIST-M-N--S-S-O-SUBLIS-P-Q-R-SUBLIST-S-T-U-V-W-X-Y-Z-END";
List list = new ArrayList();
try {
Collections.lastIndexOfSubList(null, list);
fail("Expected NullPointerException for null list first parameter");
} catch (NullPointerException e) {
//Expected
}
try {
Collections.lastIndexOfSubList(list, null);
fail("Expected NullPointerException for null list second parameter");
} catch (NullPointerException e) {
//Expected
}
testwithCharList(1, string1, "B", false);
testwithCharList(2, string1, "LIST", false);
testwithCharList(3, string1, "SUBLIST", false);
testwithCharList(4, string1, "END", false);
testwithCharList(5, string1, "NONE", false);
// test boundary conditions
testwithCharList(6, "", "", false);
testwithCharList(7, "LIST", "", false);
testwithCharList(8, "", "SUBLIST", false);
}
public void test_lastIndexOfSubList2() {
ArrayList sub = new ArrayList();
sub.add(new Integer(1));
sub.add(new Integer(2));
sub.add(new Integer(3));
ArrayList sub2 = new ArrayList();
sub2.add(new Integer(7));
sub2.add(new Integer(8));
ArrayList src = new ArrayList();
src.addAll(sub);
src.addAll(sub);
src.addAll(sub);
src.add(new Integer(5));
src.add(new Integer(6));
// so src is a list like this:
// [1, 2, 3, 1, 2, 3, 1, 2, 3, 5, 6]
Collections.reverse(src);
// it becomes like this :
// [6, 5, 3, 2, 1, 3, 2, 1, 3, 2, 1]
sub = new ArrayList(src.subList(0, 8));
// [6, 5, 3, 2, 1, 3, 2, 1]
assertEquals("TestA : Returned wrong lastIndexOfSubList, ", 0,
Collections.lastIndexOfSubList(src, sub));
sub = new ArrayList(src.subList(0, 5));
// [6, 5, 3, 2, 1]
assertEquals("TestB : Returned wrong lastIndexOfSubList, ", 0,
Collections.lastIndexOfSubList(src, sub));
sub = new ArrayList(src.subList(2, 5));
// [3, 2, 1]
assertEquals("TestC : Returned wrong lastIndexOfSubList, ", 8,
Collections.lastIndexOfSubList(src, sub));
sub = new ArrayList(src.subList(9, 11));
// [2, 1]
assertEquals("TestD : Returned wrong lastIndexOfSubList, ", 9,
Collections.lastIndexOfSubList(src, sub));
sub = new ArrayList(src.subList(10, 11));
// [1]
assertEquals("TestE : Returned wrong lastIndexOfSubList, ", 10,
Collections.lastIndexOfSubList(src, sub));
sub = new ArrayList(src.subList(0, 2));
// [6, 5]
assertEquals("TestF : Returned wrong lastIndexOfSubList, ", 0,
Collections.lastIndexOfSubList(src, sub));
sub = new ArrayList(src.subList(0, 1));
// [6]
assertEquals("TestG : Returned wrong lastIndexOfSubList, ", 0,
Collections.lastIndexOfSubList(src, sub));
sub = new ArrayList(src.subList(0, 11));
// the whole list
assertEquals("TestH : Returned wrong lastIndexOfSubList, ", 0,
Collections.lastIndexOfSubList(src, sub));
// a non-matching list
assertEquals("TestI : Returned wrong lastIndexOfSubList, ", -1,
Collections.lastIndexOfSubList(src, sub2));
}
public void test_listLjava_util_Enumeration() {
// Test for method java.util.ArrayList list(java.util.Enumeration)
Enumeration e = Collections.enumeration(ll);
ArrayList al = Collections.list(e);
int size = al.size();
assertEquals("Wrong size", ll.size(), size);
for (int i = 0; i < size; i++) {
assertEquals("wrong element at position " + i + ",", ll.get(i), al
.get(i));
}
}
public void test_synchronizedCollectionLjava_util_Collection() {
// Test for method java.util.Collection
// java.util.Collections.synchronizedCollection(java.util.Collection)
LinkedList smallList = new LinkedList();
for (int i = 0; i < 50; i++) {
smallList.add(objArray[i]);
}
final int numberOfLoops = 200;
Collection synchCol = Collections.synchronizedCollection(smallList);
// Replacing the previous line with the line below *should* cause the
// test to fail--the collecion below isn't synchronized
// Collection synchCol = smallList;
SynchCollectionChecker normalSynchChecker = new SynchCollectionChecker(
synchCol, false, numberOfLoops);
SynchCollectionChecker offsetSynchChecker = new SynchCollectionChecker(
synchCol, true, numberOfLoops);
Thread normalThread = new Thread(normalSynchChecker);
Thread offsetThread = new Thread(offsetSynchChecker);
normalThread.start();
offsetThread.start();
while ((normalSynchChecker.getNumberOfChecks() < numberOfLoops)
|| (offsetSynchChecker.getNumberOfChecks() < numberOfLoops)) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
}
}
assertTrue("Returned collection corrupted by multiple thread access",
normalSynchChecker.getResult()
&& offsetSynchChecker.getResult());
try {
normalThread.join(5000);
offsetThread.join(5000);
} catch (InterruptedException e) {
fail("join() interrupted");
}
synchCol.add(null);
assertTrue("Trying to use nulls in collection failed", synchCol
.contains(null));
smallList = new LinkedList();
for (int i = 0; i < 100; i++) {
smallList.add(objArray[i]);
}
new Support_CollectionTest("", Collections
.synchronizedCollection(smallList)).runTest();
//Test self reference
synchCol = Collections.synchronizedCollection(smallList);
synchCol.add(smallList);
assertTrue("should contain self ref", synchCol.toString().indexOf("(this") > -1);
}
public void test_synchronizedListLjava_util_List() {
try {
Collections.synchronizedList(null);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
//Expected
}
// test with a Sequential Access List
List smallList = new LinkedList();
testSynchronizedList(smallList, "Sequential Access");
smallList = new LinkedList();
List myList;
for (int i = 0; i < 100; i++) {
smallList.add(objArray[i]);
}
myList = Collections.synchronizedList(smallList);
new Support_ListTest("", myList).runTest();
// test with a Random Access List
smallList = new ArrayList();
testSynchronizedList(smallList, "Random Access");
smallList = new ArrayList();
for (int i = 0; i < 100; i++) {
smallList.add(objArray[i]);
}
myList = Collections.synchronizedList(smallList);
new Support_ListTest("", myList).runTest();
//Test self reference
myList = Collections.synchronizedList(smallList);
myList.add(smallList);
assertTrue("should contain self ref", myList.toString().indexOf("(this") > -1);
}
private void testSynchronizedList(List smallList, String type) {
for (int i = 0; i < 50; i++) {
smallList.add(objArray[i]);
}
final int numberOfLoops = 200;
List synchList = Collections.synchronizedList(smallList);
if (type.equals("Random Access"))
assertTrue(
"Returned synchronized list should implement the Random Access interface",
synchList instanceof RandomAccess);
else
assertTrue(
"Returned synchronized list should not implement the Random Access interface",
!(synchList instanceof RandomAccess));
// Replacing the previous line with the line below *should* cause the
// test to fail--the list below isn't synchronized
// List synchList = smallList;
SynchCollectionChecker normalSynchChecker = new SynchCollectionChecker(
synchList, false, numberOfLoops);
SynchCollectionChecker offsetSynchChecker = new SynchCollectionChecker(
synchList, true, numberOfLoops);
Thread normalThread = new Thread(normalSynchChecker);
Thread offsetThread = new Thread(offsetSynchChecker);
normalThread.start();
offsetThread.start();
while ((normalSynchChecker.getNumberOfChecks() < numberOfLoops)
|| (offsetSynchChecker.getNumberOfChecks() < numberOfLoops)) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
//Expected
}
}
assertTrue(
type
+ " list tests: Returned list corrupted by multiple thread access",
normalSynchChecker.getResult()
&& offsetSynchChecker.getResult());
try {
normalThread.join(5000);
offsetThread.join(5000);
} catch (InterruptedException e) {
fail(type + " list tests: join() interrupted");
}
synchList.set(25, null);
assertNull(type + " list tests: Trying to use nulls in list failed",
synchList.get(25));
}
public void test_synchronizedMapLjava_util_Map() {
// Test for method java.util.Map
// java.util.Collections.synchronizedMap(java.util.Map)
HashMap smallMap = new HashMap();
for (int i = 0; i < 50; i++) {
smallMap.put(objArray[i], objArray[i]);
}
final int numberOfLoops = 200;
Map synchMap = Collections.synchronizedMap(smallMap);
// Replacing the previous line with the line below should cause the test
// to fail--the list below isn't synchronized
// Map synchMap = smallMap;
SynchMapChecker normalSynchChecker = new SynchMapChecker(synchMap,
false, numberOfLoops);
SynchMapChecker offsetSynchChecker = new SynchMapChecker(synchMap,
true, numberOfLoops);
Thread normalThread = new Thread(normalSynchChecker);
Thread offsetThread = new Thread(offsetSynchChecker);
normalThread.start();
offsetThread.start();
while ((normalSynchChecker.getNumberOfChecks() < numberOfLoops)
|| (offsetSynchChecker.getNumberOfChecks() < numberOfLoops)) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
//Expected
}
}
assertTrue("Returned map corrupted by multiple thread access",
normalSynchChecker.getResult()
&& offsetSynchChecker.getResult());
try {
normalThread.join(5000);
offsetThread.join(5000);
} catch (InterruptedException e) {
fail("join() interrupted");
}
// synchronized map does not have to permit null keys or values
synchMap.put(new Long(25), null);
synchMap.put(null, new Long(30));
assertNull("Trying to use a null value in map failed", synchMap
.get(new Long(25)));
assertTrue("Trying to use a null key in map failed", synchMap.get(null)
.equals(new Long(30)));
smallMap = new HashMap();
for (int i = 0; i < 100; i++) {
smallMap.put(objArray[i].toString(), objArray[i]);
}
synchMap = Collections.synchronizedMap(smallMap);
new MapTestSupport(synchMap).runTest();
synchMap.keySet().remove(objArray[50].toString());
assertNull(
"Removing a key from the keySet of the synchronized map did not remove it from the synchronized map: ",
synchMap.get(objArray[50].toString()));
assertNull(
"Removing a key from the keySet of the synchronized map did not remove it from the original map",
smallMap.get(objArray[50].toString()));
}
public void test_unmodifiableMap_LinkedHashMap() {
// LinkedHashMap has a well defined iteration order and shows ordering issues with
// entrySet() / keySet() methods: iterator(), toArray(T[]) and toArray(). See bug 72073.
LinkedHashMap<String, Integer> smallMap = new LinkedHashMap<String, Integer>();
for (int i = 0; i < 100; i++) {
Integer object = objArray[i];
smallMap.put(object.toString(), object);
}
new MapTestSupport(smallMap).runTest();
}
public void test_synchronizedSetLjava_util_Set() {
// Test for method java.util.Set
// java.util.Collections.synchronizedSet(java.util.Set)
HashSet smallSet = new HashSet();
for (int i = 0; i < 50; i++) {
smallSet.add(objArray[i]);
}
final int numberOfLoops = 200;
Set synchSet = Collections.synchronizedSet(smallSet);
// Replacing the previous line with the line below should cause the test
// to fail--the set below isn't synchronized
// Set synchSet = smallSet;
SynchCollectionChecker normalSynchChecker = new SynchCollectionChecker(
synchSet, false, numberOfLoops);
SynchCollectionChecker offsetSynchChecker = new SynchCollectionChecker(
synchSet, true, numberOfLoops);
Thread normalThread = new Thread(normalSynchChecker);
Thread offsetThread = new Thread(offsetSynchChecker);
normalThread.start();
offsetThread.start();
while ((normalSynchChecker.getNumberOfChecks() < numberOfLoops)
|| (offsetSynchChecker.getNumberOfChecks() < numberOfLoops)) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
//Expected
}
}
assertTrue("Returned set corrupted by multiple thread access",
normalSynchChecker.getResult()
&& offsetSynchChecker.getResult());
try {
normalThread.join(5000);
offsetThread.join(5000);
} catch (InterruptedException e) {
fail("join() interrupted");
}
Set mySet = Collections.synchronizedSet(smallSet);
mySet.add(null);
assertTrue("Trying to use nulls in list failed", mySet.contains(null));
smallSet = new HashSet();
for (int i = 0; i < 100; i++) {
smallSet.add(objArray[i]);
}
new Support_SetTest("", Collections.synchronizedSet(smallSet))
.runTest();
//Test self reference
mySet = Collections.synchronizedSet(smallSet);
mySet.add(smallSet);
assertTrue("should contain self ref", mySet.toString().indexOf("(this") > -1);
}
public void test_synchronizedSortedMapLjava_util_SortedMap() {
// Test for method java.util.SortedMap
// java.util.Collections.synchronizedSortedMap(java.util.SortedMap)
TreeMap smallMap = new TreeMap();
for (int i = 0; i < 50; i++) {
smallMap.put(objArray[i], objArray[i]);
}
final int numberOfLoops = 200;
Map synchMap = Collections.synchronizedMap(smallMap);
// Replacing the previous line with the line below should cause the test
// to fail--the list below isn't synchronized
// Map synchMap = smallMap;
SynchMapChecker normalSynchChecker = new SynchMapChecker(synchMap,
false, numberOfLoops);
SynchMapChecker offsetSynchChecker = new SynchMapChecker(synchMap,
true, numberOfLoops);
Thread normalThread = new Thread(normalSynchChecker);
Thread offsetThread = new Thread(offsetSynchChecker);
normalThread.start();
offsetThread.start();
while ((normalSynchChecker.getNumberOfChecks() < numberOfLoops)
|| (offsetSynchChecker.getNumberOfChecks() < numberOfLoops)) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
//Expected
}
}
assertTrue("Returned map corrupted by multiple thread access",
normalSynchChecker.getResult()
&& offsetSynchChecker.getResult());
try {
normalThread.join(5000);
offsetThread.join(5000);
} catch (InterruptedException e) {
fail("join() interrupted");
}
smallMap = new TreeMap();
for (int i = 0; i < 100; i++) {
smallMap.put(objArray[i].toString(), objArray[i]);
}
synchMap = Collections.synchronizedSortedMap(smallMap);
new MapTestSupport(synchMap).runTest();
synchMap.keySet().remove(objArray[50].toString());
assertNull(
"Removing a key from the keySet of the synchronized map did not remove it from the synchronized map",
synchMap.get(objArray[50].toString()));
assertNull(
"Removing a key from the keySet of the synchronized map did not remove it from the original map",
smallMap.get(objArray[50].toString()));
}
public void test_synchronizedSortedSetLjava_util_SortedSet() {
// Test for method java.util.SortedSet
// java.util.Collections.synchronizedSortedSet(java.util.SortedSet)
TreeSet smallSet = new TreeSet();
for (int i = 0; i < 50; i++) {
smallSet.add(objArray[i]);
}
final int numberOfLoops = 200;
Set synchSet = Collections.synchronizedSet(smallSet);
// Replacing the previous line with the line below should cause the test
// to fail--the list below isn't synchronized
// Set synchSet = smallSet;
SynchCollectionChecker normalSynchChecker = new SynchCollectionChecker(
synchSet, false, numberOfLoops);
SynchCollectionChecker offsetSynchChecker = new SynchCollectionChecker(
synchSet, true, numberOfLoops);
Thread normalThread = new Thread(normalSynchChecker);
Thread offsetThread = new Thread(offsetSynchChecker);
normalThread.start();
offsetThread.start();
while ((normalSynchChecker.getNumberOfChecks() < numberOfLoops)
|| (offsetSynchChecker.getNumberOfChecks() < numberOfLoops)) {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
//Expected
}
}
assertTrue("Returned set corrupted by multiple thread access",
normalSynchChecker.getResult()
&& offsetSynchChecker.getResult());
try {
normalThread.join(5000);
offsetThread.join(5000);
} catch (InterruptedException e) {
fail("join() interrupted");
}
}
public void test_unmodifiableCollectionLjava_util_Collection() {
// Test for method java.util.Collection
// java.util.Collections.unmodifiableCollection(java.util.Collection)
boolean exception = false;
Collection c = Collections.unmodifiableCollection(ll);
assertTrue("Returned collection is of incorrect size", c.size() == ll
.size());
Iterator iterator = ll.iterator();
while (iterator.hasNext())
assertTrue("Returned list missing elements", c.contains(iterator.next()));
try {
c.add(new Object());
} catch (UnsupportedOperationException e) {
exception = true;
// Correct
}
if (!exception) {
fail("Allowed modification of collection");
}
try {
c.remove(new Object());
fail("Allowed modification of collection");
} catch (UnsupportedOperationException e) {
// Correct
}
Collection myCollection = new ArrayList();
myCollection.add(new Integer(20));
myCollection.add(null);
c = Collections.unmodifiableCollection(myCollection);
assertTrue("Collection should contain null", c.contains(null));
assertTrue("Collection should contain Integer(20)", c
.contains(new Integer(20)));
myCollection = new ArrayList();
for (int i = 0; i < 100; i++) {
myCollection.add(objArray[i]);
}
new Support_UnmodifiableCollectionTest("", Collections
.unmodifiableCollection(myCollection)).runTest();
}
public void test_unmodifiableListLjava_util_List() {
// Test for method java.util.List
// java.util.Collections.unmodifiableList(java.util.List)
// test with a Sequential Access List
boolean exception = false;
List c = Collections.unmodifiableList(ll);
// Ensure a NPE is thrown if the list is NULL
try {
Collections.unmodifiableList(null);
fail("Expected NullPointerException for null list parameter");
} catch (NullPointerException e) {
}
assertTrue("Returned list is of incorrect size", c.size() == ll.size());
assertTrue(
"Returned List should not implement Random Access interface",
!(c instanceof RandomAccess));
Iterator iterator = ll.iterator();
while (iterator.hasNext())
assertTrue("Returned list missing elements", c.contains(iterator.next()));
try {
c.add(new Object());
} catch (UnsupportedOperationException e) {
exception = true;
// Correct
}
if (!exception) {
fail("Allowed modification of list");
}
try {
c.remove(new Object());
fail("Allowed modification of list");
} catch (UnsupportedOperationException e) {
// Correct
}
// test with a Random Access List
List smallList = new ArrayList();
smallList.add(null);
smallList.add("yoink");
c = Collections.unmodifiableList(smallList);
assertNull("First element should be null", c.get(0));
assertTrue("List should contain null", c.contains(null));
assertTrue(
"T1. Returned List should implement Random Access interface",
c instanceof RandomAccess);
smallList = new ArrayList();
for (int i = 0; i < 100; i++) {
smallList.add(objArray[i]);
}
List myList = Collections.unmodifiableList(smallList);
assertTrue("List should not contain null", !myList.contains(null));
assertTrue(
"T2. Returned List should implement Random Access interface",
myList instanceof RandomAccess);
assertTrue("get failed on unmodifiable list", myList.get(50).equals(
new Integer(50)));
ListIterator listIterator = myList.listIterator();
for (int i = 0; listIterator.hasNext(); i++) {
assertTrue("List has wrong elements", ((Integer) listIterator
.next()).intValue() == i);
}
new Support_UnmodifiableCollectionTest("", smallList).runTest();
}
public void test_unmodifiableMapLjava_util_Map() {
// Test for method java.util.Map
// java.util.Collections.unmodifiableMap(java.util.Map)
boolean exception = false;
Map c = Collections.unmodifiableMap(hm);
assertTrue("Returned map is of incorrect size", c.size() == hm.size());
Iterator iterator = hm.keySet().iterator();
while (iterator.hasNext()) {
Object x = iterator.next();
assertTrue("Returned map missing elements", c.get(x).equals(
hm.get(x)));
}
try {
c.put(new Object(), "");
} catch (UnsupportedOperationException e) {
exception = true;
// Correct
}
assertTrue("Allowed modification of map", exception);
exception = false;
try {
c.remove(new Object());
} catch (UnsupportedOperationException e) {
// Correct
exception = true;
}
assertTrue("Allowed modification of map", exception);
exception = false;
Iterator entrySetIterator = c.entrySet().iterator();
Map.Entry entry = (Map.Entry) entrySetIterator.next();
try {
entry.setValue("modified");
} catch (UnsupportedOperationException e) {
// Correct
exception = true;
}
assertTrue("Allowed modification of entry", exception);
exception = false;
Object[] array = c.entrySet().toArray();
try {
((Map.Entry) array[0]).setValue("modified");
} catch (UnsupportedOperationException e) {
// Correct
exception = true;
}
assertTrue("Allowed modification of array entry", exception);
exception = false;
Map.Entry[] array2 = (Map.Entry[]) c.entrySet().toArray(
new Map.Entry[0]);
try {
array2[0].setValue("modified");
} catch (UnsupportedOperationException e) {
// Correct
exception = true;
}
assertTrue("Allowed modification of array entry2", exception);
HashMap smallMap = new HashMap();
smallMap.put(null, new Long(30));
smallMap.put(new Long(25), null);
Map unmodMap = Collections.unmodifiableMap(smallMap);
assertNull("Trying to use a null value in map failed", unmodMap
.get(new Long(25)));
assertTrue("Trying to use a null key in map failed", unmodMap.get(null)
.equals(new Long(30)));
smallMap = new HashMap();
for (int i = 0; i < 100; i++) {
smallMap.put(objArray[i].toString(), objArray[i]);
}
new MapTestSupport(smallMap).runTest();
}
public void test_unmodifiableSetLjava_util_Set() {
// Test for method java.util.Set
// java.util.Collections.unmodifiableSet(java.util.Set)
boolean exception = false;
Set c = Collections.unmodifiableSet(s);
assertTrue("Returned set is of incorrect size", c.size() == s.size());
Iterator iterator = ll.iterator();
while (iterator.hasNext())
assertTrue("Returned set missing elements", c.contains(iterator.next()));
try {
c.add(new Object());
} catch (UnsupportedOperationException e) {
exception = true;
// Correct
}
if (!exception) {
fail("Allowed modification of set");
}
try {
c.remove(new Object());
fail("Allowed modification of set");
} catch (UnsupportedOperationException e) {
// Correct
}
Set mySet = Collections.unmodifiableSet(new HashSet());
assertTrue("Should not contain null", !mySet.contains(null));
mySet = Collections.unmodifiableSet(Collections.singleton(null));
assertTrue("Should contain null", mySet.contains(null));
mySet = new TreeSet();
for (int i = 0; i < 100; i++) {
mySet.add(objArray[i]);
}
new Support_UnmodifiableCollectionTest("", Collections
.unmodifiableSet(mySet)).runTest();
}
public void test_unmodifiableSortedMapLjava_util_SortedMap() {
// Test for method java.util.SortedMap
// java.util.Collections.unmodifiableSortedMap(java.util.SortedMap)
boolean exception = false;
TreeMap tm = new TreeMap();
tm.putAll(hm);
Map c = Collections.unmodifiableSortedMap(tm);
assertTrue("Returned map is of incorrect size", c.size() == tm.size());
Iterator i = hm.keySet().iterator();
while (i.hasNext()) {
Object x = i.next();
assertTrue("Returned map missing elements", c.get(x).equals(
tm.get(x)));
}
try {
c.put(new Object(), "");
} catch (UnsupportedOperationException e) {
exception = true;
// Correct
}
if (!exception) {
fail("Allowed modification of map");
}
try {
c.remove(new Object());
} catch (UnsupportedOperationException e) {
// Correct
return;
}
fail("Allowed modification of map");
}
public void test_unmodifiableSortedSetLjava_util_SortedSet() {
// Test for method java.util.SortedSet
// java.util.Collections.unmodifiableSortedSet(java.util.SortedSet)
boolean exception = false;
SortedSet ss = new TreeSet();
ss.addAll(s);
SortedSet c = Collections.unmodifiableSortedSet(ss);
assertTrue("Returned set is of incorrect size", c.size() == ss.size());
Iterator i = ll.iterator();
while (i.hasNext())
assertTrue("Returned set missing elements", c.contains(i.next()));
try {
c.add(new Object());
} catch (UnsupportedOperationException e) {
exception = true;
// Correct
}
if (!exception) {
fail("Allowed modification of set");
}
try {
c.remove(new Object());
} catch (UnsupportedOperationException e) {
// Correct
return;
}
fail("Allowed modification of set");
}
/**
* Test unmodifiable objects toString methods
*/
public void test_unmodifiable_toString_methods() {
// Regression for HARMONY-552
ArrayList al = new ArrayList();
al.add("a");
al.add("b");
Collection uc = Collections.unmodifiableCollection(al);
assertEquals("[a, b]", uc.toString());
HashMap m = new HashMap();
m.put("one", "1");
m.put("two", "2");
Map um = Collections.unmodifiableMap(m);
assertTrue("{one=1, two=2}".equals(um.toString()) ||
"{two=2, one=1}".equals(um.toString()));
}
public void test_singletonListLjava_lang_Object() {
// Test for method java.util.Set
// java.util.Collections.singleton(java.lang.Object)
String str = "Singleton";
List single = Collections.singletonList(str);
assertEquals(1, single.size());
assertTrue(single.contains(str));
assertFalse(single.contains(null));
assertFalse(Collections.singletonList(null).contains(str));
assertTrue(Collections.singletonList(null).contains(null));
try {
single.add("New element");
fail("UnsupportedOperationException expected");
} catch (UnsupportedOperationException e) {
//expected
}
}
public void test_singletonMapLjava_lang_Object() {
// Test for method java.util.Set
// java.util.Collections.singleton(java.lang.Object)
Double key = new Double (3.14);
String value = "Fundamental constant";
Map single = Collections.singletonMap(key, value);
assertEquals(1, single.size());
assertTrue(single.containsKey(key));
assertTrue(single.containsValue(value));
assertFalse(single.containsKey(null));
assertFalse(single.containsValue(null));
assertFalse(Collections.singletonMap(null, null).containsKey(key));
assertFalse(Collections.singletonMap(null, null).containsValue(value));
assertTrue(Collections.singletonMap(null, null).containsKey(null));
assertTrue(Collections.singletonMap(null, null).containsValue(null));
try {
single.clear();
fail("UnsupportedOperationException expected");
} catch (UnsupportedOperationException e) {
//expected
}
try {
single.put(new Double(1), "one wrong value");
fail("UnsupportedOperationException expected");
} catch (UnsupportedOperationException e) {
//expected
}
}
public void test_checkType_Ljava_lang_Object_Ljava_lang_Class() throws Exception {
Method m = Collections.class.getDeclaredMethod("checkType", Object.class, Class.class);
m.setAccessible(true);
m.invoke(null, new Object(), Object.class);
try {
m.invoke(null, new Object(), int.class);
fail();
} catch (InvocationTargetException expected) {
}
}
public void test_binarySearch_asymmetry_with_comparator() throws Exception {
List list = new ArrayList();
String s1 = new String("a");
String s2 = new String("aa");
String s3 = new String("aaa");
list.add(s1);
list.add(s2);
list.add(s3);
Collections.sort(list);
Object o = Collections.binarySearch(list, 1, new StringComparator());
assertSame(0, o);
}
public void test_binarySearch_asymmetry() throws Exception {
List list = new LinkedList();
String s1 = new String("a");
String s2 = new String("aa");
String s3 = new String("aaa");
list.add(new MyComparable(s1));
list.add(new MyComparable(s2));
list.add(new MyComparable(s3));
Collections.sort(list);
Object o = Collections.binarySearch(list, 1);
assertSame(0, o);
}
private class MyComparable implements Comparable {
public String s;
public MyComparable(String s) {
this.s = s;
}
public int compareTo(Object another) {
int length = 0;
if (another instanceof MyComparable) {
length = (((MyComparable) another).s).length();
} else {
length = (Integer) another;
}
return s.length() - length;
}
}
private class StringComparator implements Comparator {
public int compare(Object object1, Object object2) {
String s = (String) object1;
int length;
if (object2 instanceof String) {
length = ((String) object2).length();
} else {
length = (Integer) object2;
}
return s.length() - length;
}
}
public void test_newSetFromMap_LMap() throws Exception {
Integer testInt[] = new Integer[100];
for (int i = 0; i < testInt.length; i++) {
testInt[i] = new Integer(i);
}
Map<Integer, Boolean> map = new HashMap<Integer, Boolean>();
Set<Integer> set = Collections.newSetFromMap(map);
for (int i = 0; i < testInt.length; i++) {
map.put(testInt[i], true);
}
// operater on map successed
map.put(testInt[1], false);
assertTrue(map.containsKey(testInt[1]));
assertEquals(100, map.size());
assertFalse(map.get(testInt[1]));
assertEquals(100, set.size());
assertTrue(set.contains(testInt[16]));
Iterator setIter = set.iterator();
Iterator mapIter = map.keySet().iterator();
int i = 0;
// in the same order
while (setIter.hasNext()) {
assertEquals(mapIter.next(), setIter.next());
}
// operator on set successed
Integer testInt101 = new Integer(101);
Integer testInt102 = new Integer(102);
set.add(testInt101);
assertTrue(set.contains(testInt101));
assertTrue(map.get(testInt101));
// operator on map still passes
map.put(testInt102, false);
assertTrue(set.contains(testInt102));
assertFalse(map.get(testInt102));
// exception thrown
try {
Collections.newSetFromMap(map);
fail("should throw IllegalArgumentException");
} catch (IllegalArgumentException e) {
// expected
}
}
/**
* serialization/deserialization.
*/
@SuppressWarnings({ "unchecked", "boxing" })
public void testSerializationSelf_newSetFromMap() throws Exception {
Integer testInt[] = new Integer[100];
for (int i = 0; i < testInt.length; i++) {
testInt[i] = new Integer(i);
}
Map<Integer, Boolean> map = new HashMap<Integer, Boolean>();
Set<Integer> set = Collections.newSetFromMap(map);
for (int i = 0; i < testInt.length; i++) {
map.put(testInt[i], true);
}
SerializationTest.verifySelf(set);
}
public void test_asLifoQueue() throws Exception {
Integer testInt[] = new Integer[100];
Integer test101 = new Integer(101);
for (int i = 0; i < testInt.length; i++) {
testInt[i] = new Integer(i);
}
Deque deque = new ArrayDeque<Integer>();
Queue<Integer> que = Collections.asLifoQueue(deque);
for (int i = 0; i < testInt.length; i++) {
que.add(testInt[i]);
}
assertEquals(100, deque.size());
assertEquals(100, que.size());
for (int i = testInt.length - 1; i >= 0; i--) {
assertEquals(testInt[i], deque.pop());
}
assertEquals(0, deque.size());
assertEquals(0, que.size());
for (int i = 0; i < testInt.length; i++) {
deque.push(testInt[i]);
}
assertEquals(100, deque.size());
assertEquals(100, que.size());
Collection col = new LinkedList<Integer>();
col.add(test101);
que.addAll(col);
assertEquals(test101, que.remove());
for (int i = testInt.length - 1; i >= 0; i--) {
assertEquals(testInt[i], que.remove());
}
assertEquals(0, deque.size());
assertEquals(0, que.size());
}
/**
* serialization/deserialization.
*/
@SuppressWarnings({ "unchecked", "boxing" })
public void testSerializationSelf_asLifoQueue() throws Exception {
Integer testInt[] = new Integer[100];
for (int i = 0; i < testInt.length; i++) {
testInt[i] = new Integer(i);
}
Deque deque = new ArrayDeque<Integer>();
Queue<Integer> que = Collections.asLifoQueue(deque);
for (int i = 0; i < testInt.length; i++) {
que.add(testInt[i]);
}
SerializationTest.verifySelf(que, new SerializableAssert() {
public void assertDeserialized(Serializable initial, Serializable deserialized) {
Queue<Integer> initque = (Queue) initial;
Queue<Integer> deserque = (Queue) deserialized;
while (!initque.isEmpty()) {
assertEquals(initque.remove(), deserque.remove());
}
}
});
}
public void test_emptyList() {
List<String> list = Collections.emptyList();
assertTrue("should be true", list.isEmpty());
}
@Override
protected void setUp() throws Exception {
super.setUp();
objArray = new Integer[1000];
myobjArray = new Object[1000];
for (int i = 0; i < objArray.length; i++) {
objArray[i] = i;
myobjArray[i] = new MyInt(i);
}
ll = new LinkedList();
myll = new LinkedList();
s = new HashSet();
mys = new HashSet();
reversedLinkedList = new LinkedList(); // to be sorted in reverse order
myReversedLinkedList = new LinkedList(); // to be sorted in reverse
// order
hm = new HashMap();
for (int i = 0; i < objArray.length; i++) {
ll.add(objArray[i]);
myll.add(myobjArray[i]);
s.add(objArray[i]);
mys.add(myobjArray[i]);
reversedLinkedList.add(objArray[objArray.length - i - 1]);
myReversedLinkedList.add(myobjArray[myobjArray.length - i - 1]);
hm.put(objArray[i].toString(), objArray[i]);
}
}
/**
* A class shared by various Map-related tests that checks the properties and contents of a
* supplied Map and compares the some methods to the same map when wrapped with
* {@link Collections#unmodifiableMap(java.util.Map)}.
*/
static class MapTestSupport {
// must be a map containing the string keys "0"-"99" paired with the Integer
// values Integer(0) to Integer(99)
private final Map<String, Integer> modifiableMap;
private final Map<String, Integer> unmodifiableMap;
public MapTestSupport(Map<String, Integer> modifiableMap) {
this.modifiableMap = modifiableMap;
unmodifiableMap = Collections.unmodifiableMap(modifiableMap);
}
public void runTest() {
testContents(modifiableMap);
testContents(unmodifiableMap);
// values()
new Support_UnmodifiableCollectionTest("values() from map test", modifiableMap.values())
.runTest();
new Support_UnmodifiableCollectionTest("values() from unmodifiable map test",
unmodifiableMap.values()).runTest();
// entrySet()
testEntrySet(modifiableMap.entrySet(), unmodifiableMap.entrySet());
// keySet()
testKeySet(modifiableMap.keySet(), unmodifiableMap.keySet());
}
private static void testContents(Map<String, Integer> map) {
// size
assertTrue("Size should return 100, returned: " + map.size(), map.size() == 100);
// containsKey
assertTrue("Should contain the key \"0\"", map.containsKey("0"));
assertTrue("Should contain the key \"50\"", map.containsKey("50"));
assertTrue("Should not contain the key \"100\"", !map.containsKey("100"));
// containsValue
assertTrue("Should contain the value 0", map.containsValue(0));
assertTrue("Should contain the value 50", map.containsValue(50));
assertTrue("Should not contain value 100", !map.containsValue(100));
// get
assertTrue("getting \"0\" didn't return 0", map.get("0") == 0);
assertTrue("getting \"50\" didn't return 50", map.get("50") == 50);
assertNull("getting \"100\" didn't return null", map.get("100"));
// isEmpty
assertTrue("should have returned false to isEmpty", !map.isEmpty());
}
private static void testEntrySet(
Set<Map.Entry<String, Integer>> referenceEntrySet,
Set<Map.Entry<String, Integer>> entrySet) {
// entrySet should be a set of mappings {"0", 0}, {"1",1}... {"99", 99}
assertEquals(100, referenceEntrySet.size());
assertEquals(100, entrySet.size());
// The ordering may be undefined for a map implementation but the ordering must be the
// same across iterator(), toArray() and toArray(T[]) for a given map *and* the same for the
// modifiable and unmodifiable map.
crossCheckOrdering(referenceEntrySet, entrySet, Map.Entry.class);
}
private static void testKeySet(Set<String> referenceKeySet, Set<String> keySet) {
// keySet should be a set of the strings "0" to "99"
testKeySetContents(referenceKeySet);
testKeySetContents(keySet);
// The ordering may be undefined for a map implementation but the ordering must be the
// same across iterator(), toArray() and toArray(T[]) for a given map *and* the same for the
// modifiable and unmodifiable map.
crossCheckOrdering(referenceKeySet, keySet, String.class);
}
private static void testKeySetContents(Set<String> keySet) {
// contains
assertTrue("should contain \"0\"", keySet.contains("0"));
assertTrue("should contain \"50\"", keySet.contains("50"));
assertTrue("should not contain \"100\"", !keySet.contains("100"));
// containsAll
HashSet<String> hs = new HashSet<String>();
hs.add("0");
hs.add("25");
hs.add("99");
assertTrue("Should contain set of \"0\", \"25\", and \"99\"", keySet.containsAll(hs));
hs.add("100");
assertTrue("Should not contain set of \"0\", \"25\", \"99\" and \"100\"",
!keySet.containsAll(hs));
// isEmpty
assertTrue("Should not be empty", !keySet.isEmpty());
// size
assertEquals("Returned wrong size.", 100, keySet.size());
}
private static <T> void crossCheckOrdering(Set<T> set1, Set<T> set2, Class<?> elementType) {
Iterator<T> set1Iterator = set1.iterator();
Iterator<T> set2Iterator = set2.iterator();
T[] zeroLengthArray = createArray(elementType, 0);
T[] set1TypedArray1 = set1.toArray(zeroLengthArray);
assertEquals(set1.size(), set1TypedArray1.length);
// Compare set1.iterator(), set2.iterator() and set1.toArray(new T[0])
int entryCount = 0;
while (set1Iterator.hasNext()) {
T set1Entry = set1Iterator.next();
T set2Entry = set2Iterator.next();
// Compare set1 with set2
assertEquals(set1Entry, set2Entry);
// Compare the iterator with the array. The arrays will be checked against each other.
assertEquals(set1Entry, set1TypedArray1[entryCount]);
entryCount++;
}
assertFalse(set2Iterator.hasNext());
assertEquals(set1.size(), entryCount);
// Compare the various arrays with each other.
// set1.toArray(new T[size])
T[] parameterArray1 = createArray(elementType, set1.size());
T[] set1TypedArray2 = set1.toArray(parameterArray1);
assertSame(set1TypedArray2, parameterArray1);
assertArrayEquals(set1TypedArray1, set1TypedArray2);
// set1.toArray()
Object[] set1UntypedArray = set1.toArray();
assertEquals(set1.size(), set1UntypedArray.length);
assertArrayEquals(set1TypedArray1, set1UntypedArray);
// set2.toArray(new T[0])
T[] set2TypedArray1 = set2.toArray(zeroLengthArray);
assertEquals(set1.size(), set2TypedArray1.length);
assertArrayEquals(set1TypedArray1, set2TypedArray1);
// set2.toArray(new T[size])
T[] parameterArray2 = createArray(elementType, set2.size());
T[] set2TypedArray2 = set1.toArray(parameterArray2);
assertSame(set2TypedArray2, parameterArray2);
assertArrayEquals(set1TypedArray1, set1TypedArray2);
// set2.toArray()
Object[] set2UntypedArray = set2.toArray();
assertArrayEquals(set1TypedArray1, set2UntypedArray);
}
private static <T> void assertArrayEquals(T[] array1, T[] array2) {
assertTrue(Arrays.equals(array1, array2));
}
@SuppressWarnings("unchecked")
private static <T> T[] createArray(Class<?> elementType, int size) {
return (T[]) Array.newInstance(elementType, size);
}
}
}