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// Copyright (C) 2018 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype.flatMap
description: >
array-like objects can be flattened (typedArrays)
info: |
Array.prototype.flatMap ( mapperFunction [ , thisArg ] )
1. Let O be ? ToObject(this value).
2. Let sourceLen be ? ToLength(? Get(O, "length")).
...
5. Let A be ? ArraySpeciesCreate(O, 0).
...
ArraySpeciesCreate ( originalArray, length )
3. Let isArray be ? IsArray(originalArray).
4. If isArray is false, return ? ArrayCreate(length).
5. Let C be ? Get(originalArray, "constructor").
includes: [compareArray.js]
features: [Array.prototype.flatMap, Int32Array]
---*/
function same(e) {
return e;
}
var ta;
var actual;
ta = new Int32Array([1, 0, 42]);
Object.defineProperty(ta, 'constructor', {
get() { throw "it should not object the typedarray ctor"; }
});
actual = [].flatMap.call(ta, same);
assert.compareArray(actual, [1, 0, 42], 'The value of actual is expected to be [1, 0, 42]');
assert.sameValue(Object.getPrototypeOf(actual), Array.prototype, 'Object.getPrototypeOf([].flatMap.call(ta, same)") returns Array.prototype');
assert.sameValue(actual instanceof Int32Array, false, 'The result of evaluating (actual instanceof Int32Array) is expected to be false');
ta = new Int32Array(0);
Object.defineProperty(ta, 'constructor', {
get() { throw "it should not object the typedarray ctor"; }
});
actual = [].flatMap.call(ta, same);
assert.compareArray(actual, [], 'The value of actual is expected to be []');
assert.sameValue(Object.getPrototypeOf(actual), Array.prototype, 'Object.getPrototypeOf([].flatMap.call(ta, same)") returns Array.prototype');
assert.sameValue(actual instanceof Int32Array, false, 'The result of evaluating (actual instanceof Int32Array) is expected to be false');
reportCompare(0, 0);
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