tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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toindex-length.js (2311B)

      1 // Copyright (C) 2016 The V8 Project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-arraybuffer-length
      6 description: >
      7  The `length` parameter is converted to a value numeric index value.
      8 info: |
      9  ArrayBuffer( length )
     10 
     11  1. If NewTarget is undefined, throw a TypeError exception.
     12  2. Let byteLength be ? ToIndex(length).
     13  3. Return ? AllocateArrayBuffer(NewTarget, byteLength).
     14 
     15  ToIndex( value )
     16 
     17  1. If value is undefined, then
     18    a. Let index be 0.
     19  2. Else,
     20    a. Let integerIndex be ? ToInteger(value).
     21    b. If integerIndex < 0, throw a RangeError exception.
     22    c. Let index be ! ToLength(integerIndex).
     23    d. If SameValueZero(integerIndex, index) is false, throw a RangeError exception.
     24  3. Return index.
     25 ---*/
     26 
     27 var obj1 = {
     28  valueOf: function() {
     29    return 42;
     30  }
     31 };
     32 
     33 var obj2 = {
     34  toString: function() {
     35    return 42;
     36  }
     37 };
     38 
     39 var buffer;
     40 
     41 buffer = new ArrayBuffer(obj1);
     42 assert.sameValue(buffer.byteLength, 42, "object's valueOf");
     43 
     44 buffer = new ArrayBuffer(obj2);
     45 assert.sameValue(buffer.byteLength, 42, "object's toString");
     46 
     47 buffer = new ArrayBuffer("");
     48 assert.sameValue(buffer.byteLength, 0, "the Empty string");
     49 
     50 buffer = new ArrayBuffer("0");
     51 assert.sameValue(buffer.byteLength, 0, "string '0'");
     52 
     53 buffer = new ArrayBuffer("1");
     54 assert.sameValue(buffer.byteLength, 1, "string '1'");
     55 
     56 buffer = new ArrayBuffer(true);
     57 assert.sameValue(buffer.byteLength, 1, "true");
     58 
     59 buffer = new ArrayBuffer(false);
     60 assert.sameValue(buffer.byteLength, 0, "false");
     61 
     62 buffer = new ArrayBuffer(NaN);
     63 assert.sameValue(buffer.byteLength, 0, "NaN");
     64 
     65 buffer = new ArrayBuffer(null);
     66 assert.sameValue(buffer.byteLength, 0, "null");
     67 
     68 buffer = new ArrayBuffer(undefined);
     69 assert.sameValue(buffer.byteLength, 0, "undefined");
     70 
     71 buffer = new ArrayBuffer(0.1);
     72 assert.sameValue(buffer.byteLength, 0, "0.1");
     73 
     74 buffer = new ArrayBuffer(0.9);
     75 assert.sameValue(buffer.byteLength, 0, "0.9");
     76 
     77 buffer = new ArrayBuffer(1.1);
     78 assert.sameValue(buffer.byteLength, 1, "1.1");
     79 
     80 buffer = new ArrayBuffer(1.9);
     81 assert.sameValue(buffer.byteLength, 1, "1.9");
     82 
     83 buffer = new ArrayBuffer(-0.1);
     84 assert.sameValue(buffer.byteLength, 0, "-0.1");
     85 
     86 buffer = new ArrayBuffer(-0.99999);
     87 assert.sameValue(buffer.byteLength, 0, "-0.99999");
     88 
     89 reportCompare(0, 0);