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// 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);
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