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|
// |reftest| shell-option(--enable-float16array)
// 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-%typedarray%.prototype.fill
description: >
Fills elements from coerced to Integer `start` and `end` values
info: |
22.2.3.8 %TypedArray%.prototype.fill (value [ , start [ , end ] ] )
%TypedArray%.prototype.fill is a distinct function that implements the same
algorithm as Array.prototype.fill as defined in 22.1.3.6 except that the this
object's [[ArrayLength]] internal slot is accessed in place of performing a
[[Get]] of "length". The implementation of the algorithm may be optimized with
the knowledge that the this value is an object that has a fixed length and
whose integer indexed properties are not sparse. However, such optimization
must not introduce any observable changes in the specified behaviour of the
algorithm.
...
22.1.3.6 Array.prototype.fill (value [ , start [ , end ] ] )
...
3. Let relativeStart be ? ToInteger(start).
4. If relativeStart < 0, let k be max((len + relativeStart), 0); else let k be
min(relativeStart, len).
5. If end is undefined, let relativeEnd be len; else let relativeEnd be ?
ToInteger(end).
...
includes: [compareArray.js, testTypedArray.js]
features: [TypedArray]
---*/
testWithTypedArrayConstructors(function(TA) {
assert(
compareArray(new TA([0, 0]).fill(1, undefined), [1, 1]),
'`undefined` start coerced to 0'
);
assert(
compareArray(new TA([0, 0]).fill(1, 0, undefined), [1, 1]),
'If end is undefined, let relativeEnd be len'
);
assert(
compareArray(new TA([0, 0]).fill(1, null), [1, 1]),
'`null` start coerced to 0'
);
assert(
compareArray(new TA([0, 0]).fill(1, 0, null), [0, 0]),
'`null` end coerced to 0'
);
assert(
compareArray(new TA([0, 0]).fill(1, true), [0, 1]),
'`true` start coerced to 1'
);
assert(
compareArray(new TA([0, 0]).fill(1, 0, true), [1, 0]),
'`true` end coerced to 1'
);
assert(
compareArray(new TA([0, 0]).fill(1, false), [1, 1]),
'`false` start coerced to 0'
);
assert(
compareArray(new TA([0, 0]).fill(1, 0, false), [0, 0]),
'`false` end coerced to 0'
);
assert(
compareArray(new TA([0, 0]).fill(1, NaN), [1, 1]),
'`NaN` start coerced to 0'
);
assert(
compareArray(new TA([0, 0]).fill(1, 0, NaN), [0, 0]),
'`NaN` end coerced to 0'
);
assert(
compareArray(new TA([0, 0]).fill(1, '1'), [0, 1]),
'string start coerced'
);
assert(
compareArray(new TA([0, 0]).fill(1, 0, '1'), [1, 0]),
'string end coerced'
);
assert(
compareArray(new TA([0, 0]).fill(1, 1.5), [0, 1]),
'start as a float number coerced'
);
assert(
compareArray(new TA([0, 0]).fill(1, 0, 1.5), [1, 0]),
'end as a float number coerced'
);
});
reportCompare(0, 0);
|
