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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/Iterator/prototype/lazy-methods-reentry-not-close-iterator.js | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/lazy-methods-reentry-not-close-iterator.js b/js/src/tests/non262/Iterator/prototype/lazy-methods-reentry-not-close-iterator.js new file mode 100644 index 0000000000..da1e4c8c29 --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/lazy-methods-reentry-not-close-iterator.js @@ -0,0 +1,43 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) + +const methods = [ + [iter => iter.map, x => x], + [iter => iter.filter, x => true], + [iter => iter.flatMap, x => [x]], +]; + +for (const method of methods) { + const iter = [1, 2, 3].values(); + const iterMethod = method[0](iter); + let iterHelper; + let reentered = false; + iterHelper = iterMethod.call(iter, x => { + if (x == 2) { + // Reenter the currently running generator. + reentered = true; + assertThrowsInstanceOf(() => iterHelper.next(), TypeError); + } + return method[1](x); + }); + + let result = iterHelper.next(); + assertEq(result.value, 1); + assertEq(result.done, false); + + assertEq(reentered, false); + result = iterHelper.next(); + assertEq(reentered, true); + assertEq(result.value, 2); + assertEq(result.done, false); + + result = iterHelper.next(); + assertEq(result.value, 3); + assertEq(result.done, false); + + result = iterHelper.next(); + assertEq(result.value, undefined); + assertEq(result.done, true); +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |