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comparison: js/src/tests/js1_5/Regress/regress-68498-004.js
js/src/tests/js1_5/Regress/regress-68498-004.js
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* | |
| 7 * Date: 15 Feb 2001 | |
| 8 * | |
| 9 * SUMMARY: self.eval(str) inside a function | |
| 10 * NOTE: 'self' is just a variable used to capture the global JS object. | |
| 11 * | |
| 12 * See http://bugzilla.mozilla.org/show_bug.cgi?id=68498 | |
| 13 * See http://bugzilla.mozilla.org/showattachment.cgi?attach_id=25251 | |
| 14 * See http://bugzilla.mozilla.org/show_bug.cgi?id=69441 (!!!) | |
| 15 * | |
| 16 * Brendan: | |
| 17 * | |
| 18 * "ECMA-262 Edition 3, 10.1.3 requires a FunctionDeclaration parsed as part | |
| 19 * of a Program by eval to create a property of eval's caller's variable object. | |
| 20 * This test evals in the body of a with statement, whose scope chain *is* | |
| 21 * relevant to the effect of parsing the FunctionDeclaration." | |
| 22 */ | |
| 23 //----------------------------------------------------------------------------- | |
| 24 var BUGNUMBER = 68498; | |
| 25 var summary = 'Testing self.eval(str) inside a function'; | |
| 26 var statprefix = '; currently at expect['; | |
| 27 var statsuffix = '] within test -'; | |
| 28 var sToEval=''; | |
| 29 var actual=[ ]; | |
| 30 var expect=[ ]; | |
| 31 | |
| 32 | |
| 33 // Capture a reference to the global object - | |
| 34 var self = this; | |
| 35 | |
| 36 // You shouldn't see this global variable's value in any printout - | |
| 37 var x = 'outer'; | |
| 38 | |
| 39 // This function is the heart of the test - | |
| 40 function f(o,s,x) {with(o) eval(s); return z;}; | |
| 41 | |
| 42 // Run-time statements to pass to the eval inside f | |
| 43 sToEval += 'actual[0] = typeof g;' | |
| 44 sToEval += 'function g(){actual[1]=(typeof w == "undefined" || w); return x};' | |
| 45 sToEval += 'actual[2] = w;' | |
| 46 sToEval += 'actual[3] = typeof g;' | |
| 47 sToEval += 'var z=g();' | |
| 48 | |
| 49 // Set the actual-results array. The next line will set actual[0] - actual[4] in one shot | |
| 50 actual[4] = f({w:44}, sToEval, 'inner'); | |
| 51 actual[5] = 'z' in self && z; | |
| 52 | |
| 53 | |
| 54 /* Set the expected-results array. | |
| 55 * | |
| 56 * Sample issue: why do we set expect[4] = 'inner'? Look at actual[4]... | |
| 57 * 1. The return value of f equals z, which is not defined at compile-time | |
| 58 * 2. At run-time (via with(o) eval(s) inside f), z is defined as the return value of g | |
| 59 * 3. At run-time (via with(o) eval(s) inside f), g is defined to return x | |
| 60 * 4. In the scope of with(o), x is undefined | |
| 61 * 5. Farther up the scope chain, x can be located as an argument of f | |
| 62 * 6. The value of this argument at run-time is 'inner' | |
| 63 * 7. Even farther up the scope chain, the name x can be found as a global variable | |
| 64 * 8. The value of this global variable is 'outer', but we should NOT have gone | |
| 65 * this far up the scope chain to find x...therefore we expect 'inner' | |
| 66 */ | |
| 67 expect[0] = 'function'; | |
| 68 expect[1] = 44; | |
| 69 expect[2] = 44; | |
| 70 expect[3] = 'function'; | |
| 71 expect[4] = 'inner'; | |
| 72 expect[5] = false; | |
| 73 | |
| 74 | |
| 75 | |
| 76 //------------------------------------------------------------------------------------------------ | |
| 77 test(); | |
| 78 //------------------------------------------------------------------------------------------------- | |
| 79 | |
| 80 | |
| 81 function test() | |
| 82 { | |
| 83 enterFunc ('test'); | |
| 84 printBugNumber(BUGNUMBER); | |
| 85 printStatus (summary); | |
| 86 | |
| 87 for (var i in expect) | |
| 88 { | |
| 89 reportCompare(expect[i], actual[i], getStatus(i)); | |
| 90 } | |
| 91 | |
| 92 exitFunc ('test'); | |
| 93 } | |
| 94 | |
| 95 | |
| 96 function getStatus(i) | |
| 97 { | |
| 98 return (summary + statprefix + i + statsuffix); | |
| 99 } |
