tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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toindex-length.js (2635B)

      1 // |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
      2 // Copyright (C) 2016 The V8 Project authors. All rights reserved.
      3 // Copyright (C) 2016 Mozilla Corporation. All rights reserved.
      4 // This code is governed by the BSD license found in the LICENSE file.
      5 
      6 /*---
      7 esid: sec-sharedarraybuffer-length
      8 description: >
      9  The `length` parameter is converted to a value numeric index value.
     10 info: |
     11  SharedArrayBuffer( length )
     12 
     13  1. If NewTarget is undefined, throw a TypeError exception.
     14  2. Let byteLength be ? ToIndex(length).
     15  3. Return ? AllocateSharedArrayBuffer(NewTarget, byteLength).
     16 
     17  ToIndex( value )
     18 
     19  1. If value is undefined, then
     20    a. Let index be 0.
     21  2. Else,
     22    a. Let integerIndex be ? ToInteger(value).
     23    b. If integerIndex < 0, throw a RangeError exception.
     24    c. Let index be ! ToLength(integerIndex).
     25    d. If SameValueZero(integerIndex, index) is false, throw a RangeError exception.
     26  3. Return index.
     27 features: [SharedArrayBuffer]
     28 ---*/
     29 
     30 var obj1 = {
     31  valueOf: function() {
     32    return 42;
     33  }
     34 };
     35 
     36 var obj2 = {
     37  toString: function() {
     38    return 42;
     39  }
     40 };
     41 
     42 var buffer;
     43 
     44 buffer = new SharedArrayBuffer(obj1);
     45 assert.sameValue(buffer.byteLength, 42, "object's valueOf");
     46 
     47 buffer = new SharedArrayBuffer(obj2);
     48 assert.sameValue(buffer.byteLength, 42, "object's toString");
     49 
     50 buffer = new SharedArrayBuffer("");
     51 assert.sameValue(buffer.byteLength, 0, "the Empty string");
     52 
     53 buffer = new SharedArrayBuffer("0");
     54 assert.sameValue(buffer.byteLength, 0, "string '0'");
     55 
     56 buffer = new SharedArrayBuffer("1");
     57 assert.sameValue(buffer.byteLength, 1, "string '1'");
     58 
     59 buffer = new SharedArrayBuffer(true);
     60 assert.sameValue(buffer.byteLength, 1, "true");
     61 
     62 buffer = new SharedArrayBuffer(false);
     63 assert.sameValue(buffer.byteLength, 0, "false");
     64 
     65 buffer = new SharedArrayBuffer(NaN);
     66 assert.sameValue(buffer.byteLength, 0, "NaN");
     67 
     68 buffer = new SharedArrayBuffer(null);
     69 assert.sameValue(buffer.byteLength, 0, "null");
     70 
     71 buffer = new SharedArrayBuffer(undefined);
     72 assert.sameValue(buffer.byteLength, 0, "undefined");
     73 
     74 buffer = new SharedArrayBuffer(0.1);
     75 assert.sameValue(buffer.byteLength, 0, "0.1");
     76 
     77 buffer = new SharedArrayBuffer(0.9);
     78 assert.sameValue(buffer.byteLength, 0, "0.9");
     79 
     80 buffer = new SharedArrayBuffer(1.1);
     81 assert.sameValue(buffer.byteLength, 1, "1.1");
     82 
     83 buffer = new SharedArrayBuffer(1.9);
     84 assert.sameValue(buffer.byteLength, 1, "1.9");
     85 
     86 buffer = new SharedArrayBuffer(-0.1);
     87 assert.sameValue(buffer.byteLength, 0, "-0.1");
     88 
     89 buffer = new SharedArrayBuffer(-0.99999);
     90 assert.sameValue(buffer.byteLength, 0, "-0.99999");
     91 
     92 reportCompare(0, 0);