tests/mozilla/js1_5/Regress/regress-68498-004.js

   1 /*
   2 * The contents of this file are subject to the Netscape Public
   3 * License Version 1.1 (the "License"); you may not use this file
   4 * except in compliance with the License. You may obtain a copy of
   5 * the License at http://www.mozilla.org/NPL/
   6 *
   7 * Software distributed under the License is distributed on an "AS
   8 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   9 * implied. See the License for the specific language governing
  10 * rights and limitations under the License.
  11 *
  12 * The Original Code is mozilla.org code.
  13 *
  14 * The Initial Developer of the Original Code is Netscape
  15 * Communications Corporation.  Portions created by Netscape are
  16 * Copyright (C) 1998 Netscape Communications Corporation. All
  17 * Rights Reserved.
  18 *
  19 * Contributor(s): brendan@mozilla.org, pschwartau@netscape.com
  20 * Date: 15 Feb 2001
  21 *
  22 * SUMMARY:  self.eval(str) inside a function
  23 * NOTE: 'self' is just a variable used to capture the global JS object.
  24 *
  25 * See http://bugzilla.mozilla.org/show_bug.cgi?id=68498
  26 * See http://bugzilla.mozilla.org/showattachment.cgi?attach_id=25251
  27 * See http://bugzilla.mozilla.org/show_bug.cgi?id=69441 (!!!)
  28 *
  29 * Brendan:
  30 *
  31 * "ECMA-262 Edition 3, 10.1.3 requires a FunctionDeclaration parsed as part
  32 * of  a Program by eval to create a property of eval's caller's variable object.
  33 * This test evals in the body of a with statement, whose scope chain *is*
  34 * relevant to the effect of parsing the FunctionDeclaration."
  35 */
  36 //-------------------------------------------------------------------------------------------------
  37 var bug = 68498;
  38 var summary = 'Testing self.eval(str) inside a function';
  39 var statprefix = '; currently at expect[';
  40 var statsuffix = '] within test -';
  41 var sToEval='';
  42 var actual=[ ];
  43 var expect=[ ];
  44
  45
  46 // Capture a reference to the global object -
  47 var self = this;
  48
  49 // You shouldn't see this global variable's value in any printout -
  50 var x = 'outer';
  51
  52 // This function is the heart of the test -
  53 function f(o,s,x) {with(o) eval(s); return z;};
  54
  55 // Run-time statements to pass to the eval inside f
  56 sToEval += 'actual[0] = typeof g;'
  57 sToEval += 'function g(){actual[1]=(typeof w == "undefined"  ||  w); return x};'
  58 sToEval += 'actual[2] = w;'
  59 sToEval += 'actual[3] = typeof g;'
  60 sToEval += 'var z=g();'
  61
  62 // Set the actual-results array. The next line will set actual[0] - actual[4] in one shot
  63 actual[4] = f({w:44}, sToEval, 'inner');
  64 actual[5] = 'z' in self && z;
  65
  66
  67 /* Set the expected-results array.
  68 *
  69 *  Sample issue: why do we set expect[4] = 'inner'?  Look at actual[4]...
  70 *  1. The return value of f equals z, which is not defined at compile-time
  71 *  2. At run-time (via with(o) eval(s) inside f), z is defined as the return value of g
  72 *  3. At run-time (via with(o) eval(s) inside f), g is defined to return x
  73 *  4. In the scope of with(o), x is undefined
  74 *  5. Farther up the scope chain, x can be located as an argument of f
  75 *  6. The value of this argument at run-time is 'inner'
  76 *  7. Even farther up the scope chain, the name x can be found as a global variable
  77 *  8. The value of this global variable is 'outer', but we should NOT have gone
  78 *      this far up the scope chain to find x...therefore we expect 'inner'
  79 */
  80 expect[0] = 'function';
  81 expect[1] = 44;
  82 expect[2] = 44;
  83 expect[3] = 'function';
  84 expect[4] = 'inner';
  85 expect[5] = false;
  86
  87
  88
  89 //------------------------------------------------------------------------------------------------
  90 test();
  91 //-------------------------------------------------------------------------------------------------
  92
  93
  94 function test()
  95 {
  96   enterFunc ('test');
  97   printBugNumber (bug);
  98   printStatus (summary);
  99
 100   for (var i in expect)
 101   {
 102     reportCompare(expect[i], actual[i], getStatus(i));
 103   }
 104
 105   exitFunc ('test');
 106 }
 107
 108
 109 function getStatus(i)
 110 {
 111   return (summary  +  statprefix  +  i  +  statsuffix);
 112 }