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Diffstat (limited to 'js/src/tests/non262/Iterator/prototype/map/proxy-abrupt-completion-in-yield.js')
-rw-r--r-- | js/src/tests/non262/Iterator/prototype/map/proxy-abrupt-completion-in-yield.js | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/map/proxy-abrupt-completion-in-yield.js b/js/src/tests/non262/Iterator/prototype/map/proxy-abrupt-completion-in-yield.js new file mode 100644 index 0000000000..4d4854da36 --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/map/proxy-abrupt-completion-in-yield.js @@ -0,0 +1,62 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) +// + +/*--- +esid: pending +description: %Iterator.prototype%.map calls return when yield throws. +info: > +features: [iterator-helpers] +---*/ + +class TestError extends Error {} + +class TestIterator extends Iterator { + constructor(log) { + super(); + this.log = log; + } + + next() { + return {done: false, value: 0}; + } + + return(value) { + log.push('close iterator'); + return {done: true, value}; + } +} + +const handlerProxy = log => new Proxy({}, { + get: (target, key, receiver) => (...args) => { + const target = args[0]; + const item = Reflect[key](...args); + + log.push(`${key}: ${args.filter(x => typeof x != 'object').map(x => x.toString())}`); + + switch (typeof item) { + case 'function': return item.bind(new Proxy(target, handlerProxy(log))); + case 'object': return new Proxy(item, handlerProxy(log)); + default: return item; + } + }, +}); + +const log = []; +const iterator = new TestIterator(log); +const iteratorProxy = new Proxy(iterator, handlerProxy(log)); +const mappedProxy = iteratorProxy.map(x => x); + +mappedProxy.next(); +assertThrowsInstanceOf(() => mappedProxy.throw(new TestError()), TestError); +mappedProxy.next(); + +assertEq( + log.join('\n'), +`get: map +get: next +get: return +close iterator` +); + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |