pjs/extensions/java/xpcom/tests/TestArray.java

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Java

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Java XPCOM Bindings.
*
* The Initial Developer of the Original Code is
* IBM Corporation.
* Portions created by the Initial Developer are Copyright (C) 2004
* IBM Corporation. All Rights Reserved.
*
* Contributor(s):
* Javier Pedemonte (jhpedemonte@gmail.com)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
import org.mozilla.xpcom.*;
import java.io.*;
/**
* Adapted from xpcom/tests/TestArray.cpp
*
* This tests the following parts of the Java<->XPCOM code:
* - Creating an XPCOM object in Java, and calling its methods.
* - Calling several of the Gecko embedding funtions.
* - Passing Java class objects to XPCOM.
* - Have XPCOM call Java class' queryInterface() method.
* - Catching GeckoException.
* - Lifetime of JNI structures and Java objects (everything should be
* garbage collected or destroyed at the appropriate time).
*
* NOTE: The System.gc() calls throughout the testcase are used to tell the
* JVM that now would be a good time to garbage collect. This helps us see
* if everything is getting freed properly. However, since the System.gc()
* call is only a suggestion to the JVM (you can't force garbage collection),
* this testcase may not work the same on every system. On my system, it
* usually works as expected (that is, Java objects that are no longer in
* use are destroyed whenever System.gc() is called). But I have seen some
* instances where the garbage collector ran later in the testcase.
*/
public class TestArray {
public static final String NS_ARRAY_CONTRACTID = "@mozilla.org/array;1";
public static void main(String [] args) {
System.loadLibrary("javaxpcom");
String mozillaPath = System.getProperty("MOZILLA_FIVE_HOME");
if (mozillaPath == null) {
throw new RuntimeException("MOZILLA_FIVE_HOME system property not set.");
}
File localFile = new File(mozillaPath);
XPCOM.initXPCOM(localFile, null);
// XPCOM.initXPCOM() only initializes XPCOM. If you want to initialize
// Gecko, you would do the following instead:
// GeckoEmbed.initEmbedding(localFile, null);
nsIComponentManager componentManager = XPCOM.getComponentManager();
nsIMutableArray array = (nsIMutableArray)
componentManager.createInstanceByContractID(NS_ARRAY_CONTRACTID, null,
nsIMutableArray.NS_IMUTABLEARRAY_IID);
if (array == null) {
throw new RuntimeException("Failed to create nsIMutableArray.");
}
fillArray(array, 10);
System.out.println("Array created:");
int fillResult[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
dumpArray(array, 10, fillResult, 10);
// test insert
IFoo foo = (IFoo) array.queryElementAt(3, IFoo.IFOO_IID);
array.insertElementAt(foo, 5, false);
System.out.println("insert 3 at 5:");
int insertResult[] = {0, 1, 2, 3, 4, 3, 5, 6, 7, 8, 9};
dumpArray(array, 11, insertResult, 10);
System.out.println("insert 3 at 0:");
array.insertElementAt(foo, 0, false);
int insertResult2[] = {3, 0, 1, 2, 3, 4, 3, 5, 6, 7, 8, 9};
dumpArray(array, 12, insertResult2, 10);
System.out.println("append 3:");
array.appendElement(foo, false);
int appendResult[] = {3, 0, 1, 2, 3, 4, 3, 5, 6, 7, 8, 9, 3};
dumpArray(array, 13, appendResult, 10);
// test IndexOf && LastIndexOf
int expectedIndex[] = {0, 4, 6, 12, -1};
int count = 0;
int index = array.indexOf(0, foo);
System.out.println("IndexOf(foo): " + index + "=" + expectedIndex[count] +
" " + assertEqual(index, expectedIndex[count]));
try {
do {
count++;
index = array.indexOf(index + 1, foo);
System.out.println("IndexOf(foo): " + index + "=" +
expectedIndex[count] + " " +
assertEqual(index, expectedIndex[count]));
} while (true);
} catch (XPCOMException e) {
// array.indexOf() did not find the element
}
index = lastIndexOf(array, foo);
count--;
System.out.println("LastIndexOf(foo): " + index + "=" +
expectedIndex[count] + " " +
assertEqual(index, expectedIndex[count]));
System.out.println("ReplaceElementAt(8):");
replaceElementAt(array, foo, 8);
System.gc();
int replaceResult[] = {3, 0, 1, 2, 3, 4, 3, 5, 3, 7, 8, 9, 3};
dumpArray(array, 13, replaceResult, 9);
System.out.println("RemoveElementAt(0):");
array.removeElementAt(0);
System.gc();
int removeResult[] = {0, 1, 2, 3, 4, 3, 5, 3, 7, 8, 9, 3};
dumpArray(array, 12, removeResult, 9);
System.out.println("RemoveElementAt(7):");
array.removeElementAt(7);
System.gc();
int removeResult2[] = {0, 1, 2, 3, 4, 3, 5, 7, 8, 9, 3};
dumpArray(array, 11, removeResult2, 9);
System.out.println("RemoveElement(foo):");
removeElement(array, foo);
System.gc();
int removeResult3[] = {0, 1, 2, 4, 3, 5, 7, 8, 9, 3};
dumpArray(array, 10, removeResult3, 9);
System.out.println("RemoveLastElement(foo):");
removeLastElement(array, foo);
System.gc();
int removeResult4[] = {0, 1, 2, 4, 3, 5, 7, 8, 9};
dumpArray(array, 9, removeResult4, 9);
// test clear
foo = null; // remove ref now, so everything is cleared
System.out.println("clear array:");
array.clear();
System.gc();
dumpArray(array, 0, null, 0);
System.out.println("add 4 new:");
fillArray(array, 4);
dumpArray(array, 4, fillResult, 4);
// test deleting of array
System.out.println("release array:");
array = null;
System.gc();
dumpArray(array, 0, null, 0);
localFile = null;
componentManager = null;
System.gc();
XPCOM.shutdownXPCOM(null);
// GeckoEmbed.termEmbedding();
System.out.println("Test Passed.");
}
static void fillArray(nsIMutableArray aArray, int aCount)
{
for (int index = 0; index < aCount; index++) {
IFoo foo = new Foo(index);
aArray.appendElement(foo, false);
}
}
static String assertEqual(int aValue1, int aValue2)
{
if (aValue1 == aValue2)
return "OK";
return "ERROR";
}
static void dumpArray(nsIMutableArray aArray, int aExpectedCount,
int[] aElementIDs, int aExpectedTotal)
{
int count = 0;
if (aArray != null)
count = aArray.getLength();
System.out.println("object count " + Foo.gCount + " = " + aExpectedTotal +
" " + assertEqual(Foo.gCount, aExpectedTotal));
System.out.println("array count " + count + " = " + aExpectedCount + " " +
assertEqual(count, aExpectedCount));
for (int index = 0; (index < count) && (index < aExpectedCount); index++) {
IFoo foo = (IFoo) aArray.queryElementAt(index, IFoo.IFOO_IID);
System.out.println(index + ": " + aElementIDs[index] + "=" +
foo.getId() + " (" +
Integer.toHexString(foo.hashCode()) + ") " +
assertEqual(foo.getId(), aElementIDs[index]));
foo = null;
}
}
static int lastIndexOf(nsIMutableArray aArray, nsISupports aElement)
{
for (int i = aArray.getLength() - 1; i >= 0; i--) {
IFoo foo = (IFoo) aArray.queryElementAt(i, IFoo.IFOO_IID);
if (foo == aElement)
return i;
}
return -1;
}
static void replaceElementAt(nsIMutableArray aArray, nsISupports aElement,
int aIndex)
{
aArray.removeElementAt(aIndex);
aArray.insertElementAt(aElement, aIndex, false);
}
/* Removes first instance of given element */
static void removeElement(nsIMutableArray aArray, nsISupports aElement)
{
int index = aArray.indexOf(0, aElement);
aArray.removeElementAt(index);
}
static void removeLastElement(nsIMutableArray aArray, nsISupports aElement)
{
int index = lastIndexOf(aArray, aElement);
aArray.removeElementAt(index);
}
}