JavaScript Tests - regression tests for bug 418641, by Igor Bukanov

js/tests/js1_7/regress/regress-418641.js

@@ -0,0 +1,113 @@
+/* -*- 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) 2007
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Igor Bukanov
+ *
+ * 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 gTestfile = 'regress-418641.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 418641;
+var summary = '++ and -- correctness';
+var actual = '';
+var expect = '';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+ 
+function get_pre_check(operand, op)
+{
+  return "{\n"+
+    "    "+operand+" = I;\n"+
+    "    let tmp = "+op+op+operand+";\n"+
+    "    if ("+operand+" !== Number(I) "+op+" 1)\n"+
+    "        throw Error('"+op+op+operand+" case 1 for '+uneval(I));\n"+
+    "    if (tmp !== "+operand+")\n"+
+    "        throw Error('"+op+op+operand+" case 2 for '+uneval(I));\n"+
+    "}\n";    
+}
+
+function get_post_check(operand, op)
+{
+  return "{\n"+
+    "    "+operand+" = I;\n"+
+    "    let tmp = "+operand+op+op+";\n"+
+    "    if ("+operand+" !== Number(I) "+op+" 1)\n"+
+    "        throw Error('"+operand+op+op+" case 1 for '+uneval(I));\n"+
+    "    if (tmp !== Number(I))\n"+
+    "        throw Error('"+op+op+operand+" case 2 for '+uneval(I));\n"+
+    "}\n";    
+}
+
+function get_check_source(operand)
+{
+  return get_pre_check(operand, '+')+
+    get_pre_check(operand, '-')+
+    get_post_check(operand, '+')+
+    get_post_check(operand, '-');
+}
+
+var arg_check = Function('I', 'a', get_check_source('a'));
+var let_check = Function('I', 'let a;'+get_check_source('a'));
+var var_check = Function('I', 'var a;'+get_check_source('a'));
+
+var my_name;
+var my_obj = {};
+var my_index = 0;
+var name_check = Function('I', get_check_source('my_name'));
+var prop_check = Function('I', get_check_source('my_obj.x'));
+var elem_check = Function('I', get_check_source('my_obj[my_index]'));
+
+var test_values = [0 , 0.5, -0.0, (1 << 30) - 1, 1 - (1 << 30)];
+
+for (let i = 0; i != test_values.length; i = i + 1) {
+  let x = [test_values[i], String(test_values[i])];
+  for (let j = 0; j != x.length; j = j + 1) {
+    try
+    {
+      expect = actual = 'No Error';
+      let test_value = x[j];
+      arg_check(test_value, 0);
+      let_check(test_value);
+      var_check(test_value);
+      name_check(test_value);
+      prop_check(test_value);
+      elem_check(test_value);
+    }
+    catch(ex)
+    {
+      actual = ex + '';
+    }
+    reportCompare(expect, actual, summary + ': ' + i + ', ' + j);
+  }
+}