tor-browser

The Tor Browser
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from-regexp-like-get-source-err.js (1249B)

      1 // Copyright (C) 2015 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 description: >
      6    Behavior when error thrown from `source` property of a RegExp-like object
      7 es6id: 21.2.3.1
      8 info: |
      9    1. Let patternIsRegExp be IsRegExp(pattern).
     10    [...]
     11    6. Else if patternIsRegExp is true, then
     12       a. Let P be Get(pattern, "source").
     13       b. ReturnIfAbrupt(P).
     14 features: [Symbol, Symbol.match]
     15 ---*/
     16 
     17 var obj = {};
     18 function CustomError() {}
     19 Object.defineProperty(obj, 'source', {
     20  get: function() {
     21    throw new CustomError();
     22  }
     23 });
     24 Object.defineProperty(obj, 'flags', {
     25  get: function() {
     26    throw new Test262Error('the `flags` property should not be referenced before `source`');
     27  }
     28 });
     29 
     30 obj[Symbol.match] = true;
     31 assert.throws(CustomError, function() {
     32  new RegExp(obj);
     33 });
     34 
     35 obj[Symbol.match] = 'string';
     36 assert.throws(CustomError, function() {
     37  new RegExp(obj);
     38 });
     39 
     40 obj[Symbol.match] = [];
     41 assert.throws(CustomError, function() {
     42  new RegExp(obj);
     43 });
     44 
     45 obj[Symbol.match] = Symbol();
     46 assert.throws(CustomError, function() {
     47  new RegExp(obj);
     48 });
     49 
     50 obj[Symbol.match] = 86;
     51 assert.throws(CustomError, function() {
     52  new RegExp(obj);
     53 });
     54 
     55 reportCompare(0, 0);