1 /*

     2  * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  * 

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  * 

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  * 

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  * 

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /**

    25  * NASHORN-207 : implement strict mode

    26  *

    27  * @test

    28  * @run

    29  */

    30 

    31 'use strict';

    32 

    33 // cannot delete a variable

    34 try {

    35     eval("var fooVar = 3; delete fooVar;");

    36     fail("#1 should have thrown SyntaxError");

    37 } catch (e) {

    38     if (! (e instanceof SyntaxError)) {

    39         fail("#2 SyntaxError expected but got " + e);

    40     } 

    41 }

    42 

    43 // cannot delete function parameter variable

    44 try {

    45     eval("function func(a) { delete a; }; func(2);");

    46     fail("#3 should have thrown SyntaxError");

    47 } catch(e) {

    48     if (! (e instanceof SyntaxError)) {

    49         fail("#4 SyntaxError expected but got " + e);

    50     } 

    51 }

    52 

    53 // assignment can't be used to define as new variable

    54 try {

    55     bar = 3;

    56     fail("#5 should have thrown ReferenceError");

    57 } catch (e) {

    58     if (! (e instanceof ReferenceError)) {

    59         fail("#6 ReferenceError expected but got " + e);

    60     }

    61 }

    62 

    63 // repeated property definition is not allowed in an object literal

    64 try {

    65     eval("var obj = { foo: 33, foo: 44 }");

    66     fail("#7 should have thrown SyntaxError");

    67 } catch(e) {

    68     if (! (e instanceof SyntaxError)) {

    69         fail("#8 SyntaxError expected but got " + e);

    70     }

    71 }

    72 

    73 // can't assign to "eval"

    74 try {

    75     eval("var eval = 3");

    76     fail("#9 should have thrown SyntaxError");

    77 } catch(e) {

    78     if (! (e instanceof SyntaxError)) {

    79         fail("#10 SyntaxError expected but got " + e);

    80     }

    81 }

    82 

    83 // can't assign to 'arguments'

    84 try {

    85     eval("function func() { arguments = 34; }");

    86     fail("#11 should have thrown SyntaxError");

    87 } catch(e) {

    88     if (! (e instanceof SyntaxError)) {

    89         fail("#12 SyntaxError expected but got " + e);

    90     }

    91 }

    92 

    93 // can't delete non-configurable properties

    94 try {

    95     delete Object.prototype;

    96     fail("#13 should have thrown TypeError");

    97 } catch (e) {

    98     if (! (e instanceof TypeError)) {

    99         fail("#14 TypeError expected but got " + e);

   100     }

   101 }

   102 

   103 // cannot re-use function parameter name

   104 try {

   105     eval("function func(a, a) {}");

   106     fail("#15 should have thrown SyntaxError");

   107 } catch (e) {

   108     if (! (e instanceof SyntaxError)) {

   109         fail("#16 SyntaxError expected but got " + e);

   110     }

   111 }

   112 

   113 // strict eval creates own scope and caller's scope is untouched!

   114 eval("var myVar = 4;");

   115 if (typeof myVar !== 'undefined') {

   116     fail("#17 eval var 'myVar' created in global scope");

   117 }

   118 

   119 eval("function myNewFunc() {}");

   120 if (typeof myNewFunc !== 'undefined') {

   121     fail("#18 eval function 'myNewFunc' created in global scope");

   122 }

   123 

   124 // no octal in strict mode

   125 try {

   126     eval("var x = 010;");

   127     fail("#19 should have thrown SyntaxError");

   128 } catch (e) {

   129     if (! (e instanceof SyntaxError)) {

   130         fail("#20 SyntaxError expected but got " + e);

   131     }

   132 }