test262/test/built-ins/Proxy/enumerate/removed-does-not-trigger.js
Mike Pennisi d9ddf80479 Revert "Merge pull request #3219 from tc39/rwaldron/migrate-comparearray"
This reverts commit b690cb67be9b487eb10156c03e2c00869e88cc9d, reversing
changes made to 50dd431dffe5cf86e9064a652d6b01dbbe542cf0. This is
necessary because the reverted changeset reduced coverage by an unknown
extent.
2021-10-01 10:18:47 -04:00

48 lines
1.2 KiB
JavaScript

// 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-proxy-object-internal-methods-and-internal-slots
description: >
Enumerate trap was removed and it should not be triggered anymore.
includes: [compareArray.js]
features: [Proxy, Symbol, Symbol.iterator]
---*/
var x;
var target = [1, 2, 3];
var p = new Proxy(target, {
enumerate: function() {
throw new Test262Error(
"An enumerate property on handler object shouldn't trigger a Proxy trap"
);
}
});
var forInResults = [];
for (x in p) {
forInResults.push(x);
}
assert(compareArray(forInResults, ["0", "1", "2"]));
var forOfResults = [];
for (x of p) {
forOfResults.push(x);
}
assert(compareArray(forOfResults, [1, 2, 3]));
var itor = p[Symbol.iterator]();
var next = itor.next();
assert.sameValue(next.value, 1);
assert.sameValue(next.done, false);
next = itor.next();
assert.sameValue(next.value, 2);
assert.sameValue(next.done, false);
next = itor.next();
assert.sameValue(next.value, 3);
assert.sameValue(next.done, false);
next = itor.next();
assert.sameValue(next.value, undefined);
assert.sameValue(next.done, true);