options-maxbytelength-object.js (1401B)
1 // |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally 2 // Copyright (C) 2021 the V8 project authors. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 /*--- 5 esid: sec-sharedarraybuffer-constructor 6 description: | 7 Invoked with an options object whose `maxByteLength` property cannot be 8 coerced to a primitive value 9 info: | 10 SharedArrayBuffer( length [ , options ] ) 11 12 1. If NewTarget is undefined, throw a TypeError exception. 13 2. Let byteLength be ? ToIndex(length). 14 3. Let requestedMaxByteLength be ? GetArrayBufferMaxByteLengthOption(options). 15 [...] 16 17 1.1.5 GetArrayBufferMaxByteLengthOption ( options ) 18 19 1. If Type(options) is not Object, return empty. 20 2. Let maxByteLength be ? Get(options, "maxByteLength"). 21 3. If maxByteLength is undefined, return empty. 22 4. Return ? ToIndex(maxByteLength). 23 features: [SharedArrayBuffer, resizable-arraybuffer] 24 ---*/ 25 26 var log = []; 27 var options = { 28 maxByteLength: { 29 toString: function() { 30 log.push('toString'); 31 return {}; 32 }, 33 valueOf: function() { 34 log.push('valueOf'); 35 return {}; 36 } 37 } 38 }; 39 40 assert.throws(TypeError, function() { 41 new SharedArrayBuffer(0, options); 42 }); 43 44 assert.sameValue(log.length, 2); 45 assert.sameValue(log[0], 'valueOf'); 46 assert.sameValue(log[1], 'toString'); 47 48 reportCompare(0, 0);