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Fix symbol-tag-generators-builtin.js

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Two issues:
1. There was a typo, the first `gen` should have been `genFn`.
2. And the last `toString` result should be `'[object Generator]'`,
   because `Object.getPrototypeOf(gen) == genFn.prototype`. And the
   `@@toStringTag` property of `genFn.prototype` is inherited from
   `Generator.prototype[@@toStringTag]`.

That also means the "iterator-helpers" flag isn't needed for this test.
This commit is contained in:
André Bargull 2023-10-10 09:16:30 +02:00 committed by Ms2ger
parent bf527dfa49
commit f0c16faee2
1 changed files with 5 additions and 3 deletions
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8
test/built-ins/Object/prototype/toString/symbol-tag-generators-builtin.js vendored
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@ -11,18 +11,20 @@ info: |
15. Let tag be ? Get(O, @@toStringTag). 15. Let tag be ? Get(O, @@toStringTag).
16. If Type(tag) is not String, set tag to builtinTag. 16. If Type(tag) is not String, set tag to builtinTag.
17. Return the string-concatenation of "[object ", tag, and "]". 17. Return the string-concatenation of "[object ", tag, and "]".
features: [Symbol.toStringTag, Symbol.iterator, generators, iterator-helpers] features: [Symbol.toStringTag, Symbol.iterator, generators]
---*/ ---*/
var toString = Object.prototype.toString; var toString = Object.prototype.toString;
var genFn = function* () {}; var genFn = function* () {};
assert.sameValue(toString.call(gen), '[object GeneratorFunction]'); assert.sameValue(toString.call(genFn), '[object GeneratorFunction]');
var gen = genFn(); var gen = genFn();
assert.sameValue(toString.call(gen), '[object Generator]'); assert.sameValue(toString.call(gen), '[object Generator]');
var genProto = Object.getPrototypeOf(gen); var genProto = Object.getPrototypeOf(gen);
assert.sameValue(genProto, genFn.prototype);
Object.defineProperty(genProto, Symbol.toStringTag, { Object.defineProperty(genProto, Symbol.toStringTag, {
configurable: true, configurable: true,
get: function() { return {}; }, get: function() { return {}; },
@ -30,4 +32,4 @@ Object.defineProperty(genProto, Symbol.toStringTag, {
assert.sameValue(toString.call(gen), '[object Object]'); assert.sameValue(toString.call(gen), '[object Object]');
delete genProto[Symbol.toStringTag]; delete genProto[Symbol.toStringTag];
assert.sameValue(toString.call(gen), '[object Iterator]'); assert.sameValue(toString.call(gen), '[object Generator]');