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Official ECMAScript Conformance Test Suite

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Incorrect groupBy tests with iterator throwing

syg opened this issue · comments

commented

built-ins/{Map,Object}/groupBy/iterator-next-throws.js is wrong by my reading. throwingIterator doesn't have a [Symbol.iterator], making step 4 in GetIterator in GroupBy throw a TypeError. The test incorrectly asserts the next() function is called and throws a Test262Error.

cc @ljharb

commented

Your reading seems correct; I'll put up a PR to correct them.