// |reftest| skip-if(!xulRuntime.shell) -- needs drainJobQueue var BUGNUMBER = 1180306; var summary = 'Promise.{all,race} should close iterator on error'; print(BUGNUMBER + ": " + summary); function test(ctor, props, { nextVal=undefined, nextThrowVal=undefined, modifier=undefined, rejectReason=undefined, rejectType=undefined, closed=true }) { function getIterable() { let iterable = { closed: false, [Symbol.iterator]() { let iterator = { first: true, next() { if (this.first) { this.first = false; if (nextThrowVal) throw nextThrowVal; return nextVal; } return { value: undefined, done: true }; }, return() { iterable.closed = true; return {}; } }; if (modifier) modifier(iterator, iterable); return iterator; } }; return iterable; } for (let prop of props) { let iterable = getIterable(); let e; ctor[prop](iterable).catch(e_ => { e = e_; }); drainJobQueue(); if(rejectType) assertEq(e instanceof rejectType, true); else assertEq(e, rejectReason); assertEq(iterable.closed, closed); } } // == Error cases with close == // ES 2017 draft 25.4.4.1.1 step 6.i. // ES 2017 draft 25.4.4.3.1 step 3.h. class MyPromiseStaticResolveGetterThrows extends Promise { static get resolve() { throw "static resolve getter throws"; } }; test(MyPromiseStaticResolveGetterThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, rejectReason: "static resolve getter throws", closed: true, }); class MyPromiseStaticResolveThrows extends Promise { static resolve() { throw "static resolve throws"; } }; test(MyPromiseStaticResolveThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, rejectReason: "static resolve throws", closed: true, }); // ES 2017 draft 25.4.4.1.1 step 6.q. // ES 2017 draft 25.4.4.3.1 step 3.i. class MyPromiseThenGetterThrows extends Promise { static resolve() { return { get then() { throw "then getter throws"; } }; } }; test(MyPromiseThenGetterThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, rejectReason: "then getter throws", closed: true, }); class MyPromiseThenThrows extends Promise { static resolve() { return { then() { throw "then throws"; } }; } }; test(MyPromiseThenThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, rejectReason: "then throws", closed: true, }); // ES 2017 draft 7.4.6 step 3. // if GetMethod fails, the thrown value should be used. test(MyPromiseThenThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, modifier: (iterator, iterable) => { Object.defineProperty(iterator, "return", { get: function() { iterable.closed = true; throw "return getter throws"; } }); }, rejectReason: "return getter throws", closed: true, }); test(MyPromiseThenThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, modifier: (iterator, iterable) => { Object.defineProperty(iterator, "return", { get: function() { iterable.closed = true; return "non object"; } }); }, rejectType: TypeError, closed: true, }); test(MyPromiseThenThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, modifier: (iterator, iterable) => { Object.defineProperty(iterator, "return", { get: function() { iterable.closed = true; // Non callable. return {}; } }); }, rejectType: TypeError, closed: true, }); // ES 2017 draft 7.4.6 steps 6. // if return method throws, the thrown value should be ignored. test(MyPromiseThenThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, modifier: (iterator, iterable) => { iterator.return = function() { iterable.closed = true; throw "return throws"; }; }, rejectReason: "then throws", closed: true, }); test(MyPromiseThenThrows, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, modifier: (iterator, iterable) => { iterator.return = function() { iterable.closed = true; return "non object"; }; }, rejectReason: "then throws", closed: true, }); // == Error cases without close == // ES 2017 draft 25.4.4.1.1 step 6.a. test(Promise, ["all", "race"], { nextThrowVal: "next throws", rejectReason: "next throws", closed: false, }); test(Promise, ["all", "race"], { nextVal: { value: {}, get done() { throw "done getter throws"; } }, rejectReason: "done getter throws", closed: false, }); // ES 2017 draft 25.4.4.1.1 step 6.e. test(Promise, ["all", "race"], { nextVal: { get value() { throw "value getter throws"; }, done: false }, rejectReason: "value getter throws", closed: false, }); // ES 2017 draft 25.4.4.1.1 step 6.d.iii.2. let first = true; class MyPromiseResolveThrows extends Promise { constructor(executer) { if (first) { first = false; super((resolve, reject) => { executer(() => { throw "resolve throws"; }, reject); }); return; } super(executer); } }; test(MyPromiseResolveThrows, ["all"], { nextVal: { value: undefined, done: true }, rejectReason: "resolve throws", closed: false, }); // == Successful cases == test(Promise, ["all", "race"], { nextVal: { value: Promise.resolve(1), done: false }, closed: false, }); if (typeof reportCompare === 'function') reportCompare(true, true);