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// |reftest| skip-if(!this.hasOwnProperty('Iterator'))
//
//
/*---
esid: pending
description: %Iterator.prototype%.flatMap closes the iterator and throws when mapped isn't iterable.
info: >
Iterator Helpers proposal 2.1.5.7
1. Repeat,
...
f. Let innerIterator be GetIteratorFlattenable(mapped).
g. IfAbruptCloseIterator(innerIterator, iterated).
features: [iterator-helpers]
---*/
class InvalidIterable {
[Symbol.iterator]() {
return {};
}
}
class TestIterator extends Iterator {
next() {
return {done: false, value: 0};
}
closed = false;
return() {
this.closed = true;
return {done: true};
}
}
const nonIterables = [
new InvalidIterable(),
undefined,
null,
0,
false,
Symbol(''),
0n,
{},
];
for (const value of nonIterables) {
const iter = new TestIterator();
const mapped = iter.flatMap(x => value);
assertEq(iter.closed, false);
assertThrowsInstanceOf(() => mapped.next(), TypeError);
assertEq(iter.closed, true);
}
if (typeof reportCompare == 'function')
reportCompare(0, 0);
|
