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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-array.prototype.map
description: >
An undefined value for the @@species constructor triggers the creation of
an Array exotic object
info: |
[...]
5. Let A be ? ArraySpeciesCreate(O, len).
[...]
9.4.2.3 ArraySpeciesCreate
[...]
5. Let C be ? Get(originalArray, "constructor").
[...]
7. If Type(C) is Object, then
a. Let C be ? Get(C, @@species).
b. If C is null, let C be undefined.
8. If C is undefined, return ? ArrayCreate(length).
9.4.2.2 ArrayCreate
[...]
3. If length>232-1, throw a RangeError exception.
features: [Proxy]
---*/
var array = [];
var maxLength = Math.pow(2, 32);
var cbCount = 0;
var setCount = 0;
var cb = function() {
cbCount += 1;
};
var proxy = new Proxy(array, {
get: function(_, name) {
if (name === 'length') {
return maxLength;
}
return array[name];
},
set: function() {
setCount += 1;
return true;
}
});
assert.throws(RangeError, function() {
Array.prototype.map.call(proxy, cb);
});
assert.sameValue(
setCount,
0,
'RangeError thrown during array creation, not property modification'
);
assert.sameValue(cbCount, 0, 'callback function not invoked');
reportCompare(0, 0);
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