/*
* 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 tests.api.java.util;
import java.io.Serializable;
import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import tests.support.Support_MapTest2;
import org.apache.harmony.testframework.serialization.SerializationTest;
public class IdentityHashMapTest extends junit.framework.TestCase {
private static final String ID = "hello";
class MockMap extends AbstractMap {
public Set entrySet() {
return null;
}
public int size(){
return 0;
}
}
/*
* TODO: change all the statements testing the keys and values with equals()
* method to check for reference equality instead
*/
IdentityHashMap hm;
final static int hmSize = 1000;
static Object[] objArray;
static Object[] objArray2;
{
objArray = new Object[hmSize];
objArray2 = new Object[hmSize];
for (int i = 0; i < objArray.length; i++) {
objArray[i] = new Integer(i);
objArray2[i] = objArray[i].toString();
}
}
/**
* @tests java.util.IdentityHashMap#IdentityHashMap()
*/
public void test_Constructor() {
// Test for method java.util.IdentityHashMap()
new Support_MapTest2(new IdentityHashMap()).runTest();
IdentityHashMap hm2 = new IdentityHashMap();
assertEquals("Created incorrect IdentityHashMap", 0, hm2.size());
}
/**
* @tests java.util.IdentityHashMap#IdentityHashMap(int)
*/
public void test_ConstructorI() {
// Test for method java.util.IdentityHashMap(int)
IdentityHashMap hm2 = new IdentityHashMap(5);
assertEquals("Created incorrect IdentityHashMap", 0, hm2.size());
try {
new IdentityHashMap(-1);
} catch (IllegalArgumentException e) {
return;
}
fail(
"Failed to throw IllegalArgumentException for initial capacity < 0");
IdentityHashMap empty = new IdentityHashMap(0);
assertNull("Empty IdentityHashMap access", empty.get("nothing"));
empty.put("something", "here");
assertTrue("cannot get element", empty.get("something") == "here");
}
/**
* @tests java.util.IdentityHashMap#IdentityHashMap(java.util.Map)
*/
public void test_ConstructorLjava_util_Map() {
// Test for method java.util.IdentityHashMap(java.util.Map)
Map myMap = new TreeMap();
for (int counter = 0; counter < hmSize; counter++)
myMap.put(objArray2[counter], objArray[counter]);
IdentityHashMap hm2 = new IdentityHashMap(myMap);
for (int counter = 0; counter < hmSize; counter++)
assertTrue("Failed to construct correct IdentityHashMap", hm
.get(objArray2[counter]) == hm2.get(objArray2[counter]));
Map mockMap = new MockMap();
hm2 = new IdentityHashMap(mockMap);
assertEquals("Size should be 0", 0, hm2.size());
}
/**
* @tests java.util.IdentityHashMap#clear()
*/
public void test_clear() {
// Test for method void java.util.IdentityHashMap.clear()
hm.clear();
assertEquals("Clear failed to reset size", 0, hm.size());
for (int i = 0; i < hmSize; i++)
assertNull("Failed to clear all elements",
hm.get(objArray2[i]));
}
/**
* @tests java.util.IdentityHashMap#clone()
*/
public void test_clone() {
// Test for method java.lang.Object java.util.IdentityHashMap.clone()
IdentityHashMap hm2 = (IdentityHashMap) hm.clone();
assertTrue("Clone answered equivalent IdentityHashMap", hm2 != hm);
for (int counter = 0; counter < hmSize; counter++)
assertTrue("Clone answered unequal IdentityHashMap", hm
.get(objArray2[counter]) == hm2.get(objArray2[counter]));
IdentityHashMap map = new IdentityHashMap();
map.put("key", "value");
// get the keySet() and values() on the original Map
Set keys = map.keySet();
Collection values = map.values();
assertEquals("values() does not work",
"value", values.iterator().next());
assertEquals("keySet() does not work",
"key", keys.iterator().next());
AbstractMap map2 = (AbstractMap) map.clone();
map2.put("key", "value2");
Collection values2 = map2.values();
assertTrue("values() is identical", values2 != values);
// values() and keySet() on the cloned() map should be different
assertEquals("values() was not cloned",
"value2", values2.iterator().next());
map2.clear();
map2.put("key2", "value3");
Set key2 = map2.keySet();
assertTrue("keySet() is identical", key2 != keys);
assertEquals("keySet() was not cloned",
"key2", key2.iterator().next());
}
/**
* @tests java.util.IdentityHashMap#containsKey(java.lang.Object)
*/
public void test_containsKeyLjava_lang_Object() {
// Test for method boolean
// java.util.IdentityHashMap.containsKey(java.lang.Object)
assertTrue("Returned false for valid key", hm
.containsKey(objArray2[23]));
assertTrue("Returned true for copy of valid key", !hm
.containsKey(new Integer(23).toString()));
assertTrue("Returned true for invalid key", !hm.containsKey("KKDKDKD"));
IdentityHashMap m = new IdentityHashMap();
m.put(null, "test");
assertTrue("Failed with null key", m.containsKey(null));
assertTrue("Failed with missing key matching null hash", !m
.containsKey(new Integer(0)));
}
/**
* @tests java.util.IdentityHashMap#containsValue(java.lang.Object)
*/
public void test_containsValueLjava_lang_Object() {
// Test for method boolean
// java.util.IdentityHashMap.containsValue(java.lang.Object)
assertTrue("Returned false for valid value", hm
.containsValue(objArray[19]));
assertTrue("Returned true for invalid valie", !hm
.containsValue(new Integer(-9)));
}
/**
* @tests java.util.IdentityHashMap#entrySet()
*/
public void test_entrySet() {
// Test for method java.util.Set java.util.IdentityHashMap.entrySet()
Set s = hm.entrySet();
Iterator i = s.iterator();
assertTrue("Returned set of incorrect size", hm.size() == s.size());
while (i.hasNext()) {
Map.Entry m = (Map.Entry) i.next();
assertTrue("Returned incorrect entry set", hm.containsKey(m
.getKey())
&& hm.containsValue(m.getValue()));
}
}
/**
* @tests java.util.IdentityHashMap#get(java.lang.Object)
*/
public void test_getLjava_lang_Object() {
// Test for method java.lang.Object
// java.util.IdentityHashMap.get(java.lang.Object)
assertNull("Get returned non-null for non existent key",
hm.get("T"));
hm.put("T", "HELLO");
assertEquals("Get returned incorecct value for existing key", "HELLO", hm.get("T")
);
IdentityHashMap m = new IdentityHashMap();
m.put(null, "test");
assertEquals("Failed with null key", "test", m.get(null));
assertNull("Failed with missing key matching null hash", m
.get(new Integer(0)));
}
/**
* @tests java.util.IdentityHashMap#isEmpty()
*/
public void test_isEmpty() {
// Test for method boolean java.util.IdentityHashMap.isEmpty()
assertTrue("Returned false for new map", new IdentityHashMap()
.isEmpty());
assertTrue("Returned true for non-empty", !hm.isEmpty());
}
/**
* @tests java.util.IdentityHashMap#keySet()
*/
public void test_keySet() {
// Test for method java.util.Set java.util.IdentityHashMap.keySet()
Set s = hm.keySet();
assertTrue("Returned set of incorrect size()", s.size() == hm.size());
for (int i = 0; i < objArray.length; i++) {
assertTrue("Returned set does not contain all keys", s
.contains(objArray2[i]));
}
IdentityHashMap m = new IdentityHashMap();
m.put(null, "test");
assertTrue("Failed with null key", m.keySet().contains(null));
assertNull("Failed with null key", m.keySet().iterator().next());
Map map = new IdentityHashMap(101);
map.put(new Integer(1), "1");
map.put(new Integer(102), "102");
map.put(new Integer(203), "203");
Iterator it = map.keySet().iterator();
Integer remove1 = (Integer) it.next();
it.hasNext();
it.remove();
Integer remove2 = (Integer) it.next();
it.remove();
ArrayList list = new ArrayList(Arrays.asList(new Integer[] {
new Integer(1), new Integer(102), new Integer(203) }));
list.remove(remove1);
list.remove(remove2);
assertTrue("Wrong result", it.next().equals(list.get(0)));
assertEquals("Wrong size", 1, map.size());
assertTrue("Wrong contents", map.keySet().iterator().next().equals(
list.get(0)));
Map map2 = new IdentityHashMap(101);
map2.put(new Integer(1), "1");
map2.put(new Integer(4), "4");
Iterator it2 = map2.keySet().iterator();
Integer remove3 = (Integer) it2.next();
Integer next;
if (remove3.intValue() == 1)
next = new Integer(4);
else
next = new Integer(1);
it2.hasNext();
it2.remove();
assertTrue("Wrong result 2", it2.next().equals(next));
assertEquals("Wrong size 2", 1, map2.size());
assertTrue("Wrong contents 2", map2.keySet().iterator().next().equals(
next));
}
/**
* @tests java.util.IdentityHashMap#put(java.lang.Object, java.lang.Object)
*/
public void test_putLjava_lang_ObjectLjava_lang_Object() {
// Test for method java.lang.Object
// java.util.IdentityHashMap.put(java.lang.Object, java.lang.Object)
hm.put("KEY", "VALUE");
assertEquals("Failed to install key/value pair",
"VALUE", hm.get("KEY"));
IdentityHashMap m = new IdentityHashMap();
Short s0 = new Short((short) 0);
m.put(s0, "short");
m.put(null, "test");
Integer i0 = new Integer(0);
m.put(i0, "int");
assertEquals("Failed adding to bucket containing null",
"short", m.get(s0));
assertEquals("Failed adding to bucket containing null2", "int", m.get(i0)
);
}
/**
* @tests java.util.IdentityHashMap#putAll(java.util.Map)
*/
public void test_putAllLjava_util_Map() {
// Test for method void java.util.IdentityHashMap.putAll(java.util.Map)
IdentityHashMap hm2 = new IdentityHashMap();
hm2.putAll(hm);
for (int i = 0; i < 1000; i++)
assertTrue("Failed to clear all elements", hm2.get(objArray2[i])
.equals((new Integer(i))));
hm2 = new IdentityHashMap();
Map mockMap = new MockMap();
hm2.putAll(mockMap);
assertEquals("Size should be 0", 0, hm2.size());
}
/**
* @tests java.util.IdentityHashMap#remove(java.lang.Object)
*/
public void test_removeLjava_lang_Object() {
// Test for method java.lang.Object
// java.util.IdentityHashMap.remove(java.lang.Object)
int size = hm.size();
Integer x = ((Integer) hm.remove(objArray2[9]));
assertTrue("Remove returned incorrect value", x.equals(new Integer(9)));
assertNull("Failed to remove given key", hm.get(objArray2[9]));
assertTrue("Failed to decrement size", hm.size() == (size - 1));
assertNull("Remove of non-existent key returned non-null", hm
.remove("LCLCLC"));
IdentityHashMap m = new IdentityHashMap();
m.put(null, "test");
assertNull("Failed with same hash as null",
m.remove(objArray[0]));
assertEquals("Failed with null key", "test", m.remove(null));
}
/**
* @tests java.util.IdentityHashMap#size()
*/
public void test_size() {
// Test for method int java.util.IdentityHashMap.size()
assertEquals("Returned incorrect size, ", (objArray.length + 2), hm
.size());
}
/**
* @tests java.util.IdentityHashMap#equals(java.lang.Object)
*/
public void test_equalsLjava_lang_Object() {
IdentityHashMap mapOne = new IdentityHashMap();
IdentityHashMap mapTwo = new IdentityHashMap();
IdentityHashMap mapThree = new IdentityHashMap();
IdentityHashMap mapFour = new IdentityHashMap();
String one = "one";
String alsoOne = new String(one); // use the new operator to ensure a
// new reference is constructed
String two = "two";
String alsoTwo = new String(two); // use the new operator to ensure a
// new reference is constructed
mapOne.put(one, two);
mapFour.put(one, two);
// these two are not equal to the above two
mapTwo.put(alsoOne, two);
mapThree.put(one, alsoTwo);
assertEquals("failure of equality of IdentityHashMaps", mapOne, mapFour);
assertTrue("failure of non-equality of IdentityHashMaps one and two",
!mapOne.equals(mapTwo));
assertTrue("failure of non-equality of IdentityHashMaps one and three",
!mapOne.equals(mapThree));
assertTrue("failure of non-equality of IdentityHashMaps two and three",
!mapTwo.equals(mapThree));
HashMap hashMapTwo = new HashMap();
HashMap hashMapThree = new HashMap();
hashMapTwo.put(alsoOne, two);
hashMapThree.put(one, alsoTwo);
assertTrue(
"failure of non-equality of IdentityHashMaps one and Hashmap two",
!mapOne.equals(hashMapTwo));
assertTrue(
"failure of non-equality of IdentityHashMaps one and Hashmap three",
!mapOne.equals(hashMapThree));
}
/**
* @tests java.util.IdentityHashMap#values()
*/
public void test_values() {
// Test for method java.util.Collection
// java.util.IdentityHashMap.values()
Collection c = hm.values();
assertTrue("Returned collection of incorrect size()", c.size() == hm
.size());
for (int i = 0; i < objArray.length; i++)
assertTrue("Returned collection does not contain all keys", c
.contains(objArray[i]));
IdentityHashMap myIdentityHashMap = new IdentityHashMap();
for (int i = 0; i < 100; i++)
myIdentityHashMap.put(objArray2[i], objArray[i]);
Collection values = myIdentityHashMap.values();
values.remove(objArray[0]);
assertTrue(
"Removing from the values collection should remove from the original map",
!myIdentityHashMap.containsValue(objArray2[0]));
}
/**
* @tests java.util.IdentityHashMap#Serialization()
*/
public void test_Serialization() throws Exception {
IdentityHashMap<String, String> map = new IdentityHashMap<String, String>();
map.put(ID, "world");
SerializationTest.verifySelf(map, comparator);
SerializationTest.verifyGolden(this, map, comparator);
}
/**
* Sets up the fixture, for example, open a network connection. This method
* is called before a test is executed.
*/
protected void setUp() {
hm = new IdentityHashMap();
for (int i = 0; i < objArray.length; i++)
hm.put(objArray2[i], objArray[i]);
hm.put("test", null);
hm.put(null, "test");
}
/**
* Tears down the fixture, for example, close a network connection. This
* method is called after a test is executed.
*/
protected void tearDown() {
}
private static final SerializationTest.SerializableAssert comparator = new
SerializationTest.SerializableAssert() {
public void assertDeserialized(Serializable initial, Serializable deserialized) {
IdentityHashMap<String, String> initialMap = (IdentityHashMap<String, String>) initial;
IdentityHashMap<String, String> deseriaMap = (IdentityHashMap<String, String>) deserialized;
assertEquals("should be equal", initialMap.size(), deseriaMap.size());
}
};
}