mirror of
https://github.com/rn10950/RetroZilla.git
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303 lines
8.2 KiB
C++
303 lines
8.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org Code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <stdlib.h>
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#include <stdio.h>
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#include "nsVoidBTree.h"
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#include "nsVoidArray.h"
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#define COUNT 1024
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#define POINTER(i) NS_REINTERPRET_CAST(void*, 4 + 4 * (i))
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static PRBool
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Equal(const nsVoidArray& aControl, const nsVoidBTree& aTest)
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{
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if (aControl.Count() != aTest.Count()) {
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printf("counts not equal; ");
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return PR_FALSE;
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}
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for (PRInt32 i = aControl.Count() - 1; i >= 0; --i) {
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if (aControl[i] != aTest[i]) {
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printf("element %d differs; ", i);
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return PR_FALSE;
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}
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}
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return PR_TRUE;
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}
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static void
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CheckForwardEnumeration(const nsVoidArray& aControl, const nsVoidBTree& aTest)
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{
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PRInt32 index = 0;
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nsVoidBTree::ConstIterator last = aTest.Last();
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for (nsVoidBTree::ConstIterator element = aTest.First(); element != last; ++element, ++index) {
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if (*element != aControl[index]) {
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printf("failed forward enumeration\n");
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exit(-1);
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}
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}
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if (index != aControl.Count()) {
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printf("erratic termination during forward enumeration\n");
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exit(-1);
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}
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}
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static void
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CheckBackwardEnumeration(const nsVoidArray& aControl, const nsVoidBTree& aTest)
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{
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PRInt32 index = aControl.Count();
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nsVoidBTree::ConstIterator first = aTest.First();
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nsVoidBTree::ConstIterator element = aTest.Last();
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if (first != element) {
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do {
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if (*--element != aControl[--index]) {
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printf("failed backward enumeration\n");
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exit(-1);
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}
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} while (element != first);
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}
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if (index != 0) {
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printf("erratic termination during backward enumeration\n");
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exit(-1);
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}
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}
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int main(int argc, char* argv[])
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{
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nsVoidBTree btree;
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PRInt32 i;
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//----------------------------------------
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// Tail fill
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for (i = 0; i < COUNT; ++i)
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btree.InsertElementAt(NS_REINTERPRET_CAST(void*, POINTER(i)), i);
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for (i = 0; i < COUNT; ++i) {
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if (btree[i] != POINTER(i)) {
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printf("tail fill failed\n");
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return -1;
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}
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}
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printf("tail fill succeeded\n");
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//----------------------------------------
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// Tail empty
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for (i = COUNT - 1; i >= 0; --i)
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btree.RemoveElementAt(i);
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if (btree.Count() != 0) {
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printf("tail empty failed\n");
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return -1;
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}
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printf("tail empty succeeded\n");
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// N.B. no intervening Clear() to verify that we handle the re-use
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// case.
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//----------------------------------------
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// Front fill
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for (i = 0; i < COUNT; ++i)
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btree.InsertElementAt(POINTER(i), 0);
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for (i = 0; i < COUNT; ++i) {
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if (btree[COUNT - (i + 1)] != POINTER(i)) {
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printf("simple front fill failed\n");
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return -1;
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}
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}
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printf("front fill succeeded\n");
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//----------------------------------------
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// Front empty
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for (i = COUNT - 1; i >= 0; --i)
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btree.RemoveElementAt(0);
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if (btree.Count() != 0) {
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printf("front empty failed\n");
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return -1;
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}
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printf("front empty succeeded\n");
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fflush(stdout);
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//----------------------------------------
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// Test boundary conditions with small btree
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{
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printf("small btree boundary conditions ");
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fflush(stdout);
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nsVoidArray control;
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btree.Clear();
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CheckBackwardEnumeration(control, btree);
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CheckForwardEnumeration(control, btree);
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btree.AppendElement(POINTER(0));
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control.AppendElement(POINTER(0));
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CheckBackwardEnumeration(control, btree);
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CheckForwardEnumeration(control, btree);
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btree.AppendElement(POINTER(1));
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control.AppendElement(POINTER(1));
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CheckBackwardEnumeration(control, btree);
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CheckForwardEnumeration(control, btree);
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btree.RemoveElementAt(0);
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btree.RemoveElementAt(0);
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control.RemoveElementAt(0);
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control.RemoveElementAt(0);
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CheckBackwardEnumeration(control, btree);
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CheckForwardEnumeration(control, btree);
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printf("succeeded\n");
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}
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//----------------------------------------
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// Iterator
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{
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nsVoidArray control;
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btree.Clear();
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// Fill
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for (i = 0; i < COUNT; ++i) {
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PRInt32 slot = i ? rand() % i : 0;
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btree.InsertElementAt(POINTER(i), slot);
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control.InsertElementAt(POINTER(i), slot);
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if (! Equal(control, btree)) {
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printf("failed\n");
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return -1;
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}
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}
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for (nsVoidBTree::Iterator m = btree.First(); m != btree.Last(); ++m) {
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nsVoidBTree::Iterator n;
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for (n = m, ++n; n != btree.Last(); ++n) {
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if (*m > *n) {
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void* tmp = *m;
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*m = *n;
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*n = tmp;
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}
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}
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}
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nsVoidBTree::Iterator el;
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for (el = btree.First(), i = 0; el != btree.Last(); ++el, ++i) {
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if (*el != POINTER(i)) {
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printf("bubble sort failed\n");
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return -1;
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}
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}
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printf("iteration succeeded\n");
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}
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//----------------------------------------
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// Random hammering
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printf("random fill/empty: ");
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for (PRInt32 iter = 10; iter >= 1; --iter) {
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printf("%d ", iter);
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fflush(stdout);
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nsVoidArray control;
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btree.Clear();
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// Fill
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for (i = 0; i < COUNT; ++i) {
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PRInt32 slot = i ? rand() % i : 0;
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btree.InsertElementAt(POINTER(i), slot);
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control.InsertElementAt(POINTER(i), slot);
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if (! Equal(control, btree)) {
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printf("failed\n");
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return -1;
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}
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}
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// IndexOf
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for (i = 0; i < COUNT; ++i) {
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void* element = control[i];
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if (btree.IndexOf(element) != i) {
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printf("failed IndexOf at %d\n", i);
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return -1;
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}
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}
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// Backward enumeration
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CheckBackwardEnumeration(control, btree);
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// Forward enumeration
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CheckForwardEnumeration(control, btree);
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// Empty
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for (i = COUNT - 1; i >= 0; --i) {
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PRInt32 slot = i ? rand() % i : 0;
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btree.RemoveElementAt(slot);
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control.RemoveElementAt(slot);
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if (! Equal(control, btree)) {
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printf("failed\n");
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return -1;
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}
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}
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}
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printf("succeeded\n");
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return 0;
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}
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