sort should not by O(N^2) on sorted data, bug 99120, by Phil Schwartau

js/tests/js1_5/Array/regress-99120-01.js

@@ -0,0 +1,74 @@
+/* -*- 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 JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2005
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Phil Schwartau <pschwartau@meer.net>
+ *                 Bob Clary <bob@bclary.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 ***** */
+//-----------------------------------------------------------------------------
+var bug = 99120;
+var summary = 'sort() should not be O(N^2) on sorted data';
+var actual = '';
+var expect = '';
+
+printBugNumber (bug);
+printStatus (summary);
+
+var data = {X:[], Y:[]};
+for (var size = 100; size < 1000; size += 100)
+{  
+  data.X.push(size);
+  data.Y.push(testSort(size));
+}
+
+var order = BigO(data);
+
+reportCompare(true, order < 2 , 'BigO ' + order + ' < 2');
+
+function testSort(size)
+{
+  var arry = new Array(size);
+  for (var i = 0; i < size; i++)
+  {
+    arry[i] = i;
+  }
+  var start = new Date();
+  arry.sort(compareFn);
+  var stop = new Date();
+  return stop - start;
+}
+
+function compareFn(a, b)
+{
+  return a - b;
+}

js/tests/js1_5/Array/regress-99120-02.js

@@ -0,0 +1,69 @@
+/* -*- 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 JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2005
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Phil Schwartau <pschwartau@meer.net>
+ *                 Bob Clary <bob@bclary.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 ***** */
+//-----------------------------------------------------------------------------
+var bug = 99120;
+var summary = 'sort() should not be O(N^2) on nearly sorted data';
+var actual = '';
+var expect = '';
+
+printBugNumber (bug);
+printStatus (summary);
+  
+var data = {X:[], Y:[]};
+for (var size = 100; size < 1000; size += 100)
+{  
+  data.X.push(size);
+  data.Y.push(testSort(size));
+}
+
+var order = BigO(data);
+
+reportCompare(true, order < 2 , 'BigO ' + order + ' < 2');
+
+function testSort(size)
+{
+  var arry = new Array(size);
+  for (var i = 0; i < size; i++)
+  {
+    arry[i] = i + '';
+  }
+  var start = new Date();
+  arry.sort();
+  var stop = new Date();
+  return stop - start;
+}