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-rw-r--r--js/src/tests/ecma_6/Promise/iterator-close.js234
1 files changed, 234 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Promise/iterator-close.js b/js/src/tests/ecma_6/Promise/iterator-close.js
new file mode 100644
index 000000000..f17260d05
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+++ b/js/src/tests/ecma_6/Promise/iterator-close.js
@@ -0,0 +1,234 @@
+// |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);