// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-dataview-buffer-byteoffset-bytelength description: > ToIndex conversions on byteOffset info: | 24.2.2.1 DataView ( buffer, byteOffset, byteLength ) ... 4. Let offset be ? ToIndex(byteOffset). ... ToIndex( value ) 1. If value is undefined, then a. Let index be 0. 2. Else, a. Let integerIndex be ? ToInteger(value). b. If integerIndex < 0, throw a RangeError exception. c. Let index be ! ToLength(integerIndex). d. If SameValueZero(integerIndex, index) is false, throw a RangeError exception. 3. Return index. ---*/ var obj1 = { valueOf: function() { return 3; } }; var obj2 = { toString: function() { return 4; } }; var sample; var ab = new ArrayBuffer(42); sample = new DataView(ab, -0); assert.sameValue(sample.byteOffset, 0, "-0"); sample = new DataView(ab, obj1); assert.sameValue(sample.byteOffset, 3, "object's valueOf"); sample = new DataView(ab, obj2); assert.sameValue(sample.byteOffset, 4, "object's toString"); sample = new DataView(ab, ""); assert.sameValue(sample.byteOffset, 0, "the Empty string"); sample = new DataView(ab, "0"); assert.sameValue(sample.byteOffset, 0, "string '0'"); sample = new DataView(ab, "1"); assert.sameValue(sample.byteOffset, 1, "string '1'"); sample = new DataView(ab, true); assert.sameValue(sample.byteOffset, 1, "true"); sample = new DataView(ab, false); assert.sameValue(sample.byteOffset, 0, "false"); sample = new DataView(ab, NaN); assert.sameValue(sample.byteOffset, 0, "NaN"); sample = new DataView(ab, null); assert.sameValue(sample.byteOffset, 0, "null"); sample = new DataView(ab, undefined); assert.sameValue(sample.byteOffset, 0, "undefined"); sample = new DataView(ab, 0.1); assert.sameValue(sample.byteOffset, 0, "0.1"); sample = new DataView(ab, 0.9); assert.sameValue(sample.byteOffset, 0, "0.9"); sample = new DataView(ab, 1.1); assert.sameValue(sample.byteOffset, 1, "1.1"); sample = new DataView(ab, 1.9); assert.sameValue(sample.byteOffset, 1, "1.9"); sample = new DataView(ab, -0.1); assert.sameValue(sample.byteOffset, 0, "-0.1"); sample = new DataView(ab, -0.99999); assert.sameValue(sample.byteOffset, 0, "-0.99999"); reportCompare(0, 0);