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// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
//
// This test checks that %Iterator.prototype%.find only gets the `next` method off of the
// iterator once, and never accesses the @@iterator property.
const log = [];
const handlerProxy = new Proxy({}, {
get: (target, key, receiver) => (...args) => {
log.push(`${key}: ${args[1]?.toString()}`);
return Reflect[key](...args);
},
});
class Counter extends AsyncIterator {
value = 0;
next() {
const value = this.value;
if (value < 2) {
this.value = value + 1;
return Promise.resolve({done: false, value});
}
return Promise.resolve({done: true});
}
}
const iter = new Proxy(new Counter(), handlerProxy);
iter.find(x => x % 2 == 1).then(value => {
assertEq(value, 1);
assertEq(
log.join('\n'),
`get: find
get: next
get: value
set: value
getOwnPropertyDescriptor: value
defineProperty: value
get: value
set: value
getOwnPropertyDescriptor: value
defineProperty: value
get: return`
);
});
if (typeof reportCompare === 'function')
reportCompare(0, 0);
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