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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-%typedarray%.from
description: >
Return a new TypedArray using a custom Constructor
includes: [testTypedArray.js]
features: [TypedArray]
---*/
var source = [42, 43, 42];
testWithTypedArrayConstructors(function(TA, N) {
var called = 0;
var ctor = function(len) {
assert.sameValue(arguments.length, 1);
called++;
return new TA(len);
};
var result = TA.from.call(ctor, N(source));
assert.sameValue(result.length, 3);
assert.sameValue(result[0], N(42));
assert.sameValue(result[1], N(43));
assert.sameValue(result[2], N(42));
assert.sameValue(result.constructor, TA);
assert.sameValue(Object.getPrototypeOf(result), TA.prototype);
assert.sameValue(called, 1);
});
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