gecko/xpcom/tests/TestDeque.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
#include "nsDeque.h"
#include "nsCRT.h"
#include <stdio.h>
/**************************************************************
Now define the token deallocator class...
**************************************************************/
class _TestDeque {
public:
_TestDeque() {
SelfTest();
}
int SelfTest();
nsresult OriginalTest();
nsresult OriginalFlaw();
nsresult AssignFlaw();
};
static _TestDeque sTestDeque;
class _Dealloc: public nsDequeFunctor {
virtual void* operator()(void* aObject) {
return 0;
}
};
/**
* conduct automated self test for this class
*
* @param
* @return
*/
int _TestDeque::SelfTest() {
/* the old deque should have failed a bunch of these tests */
int results=0;
results+=OriginalTest();
results+=OriginalFlaw();
results+=AssignFlaw();
return results;
}
nsresult _TestDeque::OriginalTest() {
int ints[200];
int count=sizeof(ints)/sizeof(int);
int i=0;
int* temp;
nsDeque theDeque(new _Dealloc); //construct a simple one...
for (i=0;i<count;i++) { //initialize'em
ints[i]=10*(1+i);
}
for (i=0;i<70;i++) {
theDeque.Push(&ints[i]);
}
for (i=0;i<56;i++) {
temp=(int*)theDeque.Pop();
}
for (i=0;i<55;i++) {
theDeque.Push(&ints[i]);
}
for (i=0;i<35;i++) {
temp=(int*)theDeque.Pop();
}
for (i=0;i<35;i++) {
theDeque.Push(&ints[i]);
}
for (i=0;i<38;i++) {
temp=(int*)theDeque.Pop();
}
return NS_OK;
}
nsresult _TestDeque::OriginalFlaw() {
int ints[200];
int i=0;
int* temp;
nsDeque secondDeque(new _Dealloc);
/**
* Test 1. Origin near end, semi full, call Peek().
* you start, mCapacity is 8
*/
printf("fill array\n");
for (i=32; i; --i)
ints[i]=i*3+10;
printf("push 6 times\n");
for (i=0; i<6; i++)
secondDeque.Push(&ints[i]);
printf("popfront 4 times:\n");
for (i=4; i; --i) {
temp=(int*)secondDeque.PopFront();
printf("%d\t",*temp);
}
printf("push 4 times\n");
for (int j=4; j; --j)
secondDeque.Push(&ints[++i]);
printf("origin should now be about 4\n");
printf("and size should be 6\n");
printf("origin+size>capacity\n");
/*<akk> Oh, I see ... it's a circular buffer */
printf("but the old code wasn't behaving accordingly.\n");
/*right*/
printf("we shouldn't crash or anything interesting, ");
temp=(int*)secondDeque.Peek();
printf("peek: %d\n",*temp);
return NS_OK;
}
nsresult _TestDeque::AssignFlaw() {
nsDeque src(new _Dealloc),dest(new _Dealloc);
return NS_OK;
}
int main (void) {
_TestDeque test;
return 0;
}