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// |jit-test| skip-if: !getBuildConfiguration("explicit-resource-management"); --enable-explicit-resource-management
load(libdir + "asserts.js");
class CustomError1 extends Error {}
class CustomError2 extends Error {}
function createIterator(values, throwingNature) {
return {
[Symbol.asyncIterator]: () => ({
i: 0,
async return() {
values.push("return");
if (throwingNature === "return" || throwingNature === "both") {
throw new CustomError2();
}
return { done: true };
},
async next() {
return {
value: {
val: this.i++,
async [Symbol.asyncDispose]() {
values.push(this.val);
if ((throwingNature === "disposal" || throwingNature === "both") && this.val === 3) {
throw new CustomError1();
}
}
},
done: false
}
}
})
}
}
{
const values = [];
const iterator = createIterator(values, "disposal");
async function testDisposalThrowsAreThrown() {
for await (await using d of iterator) {
if (d.val === 3) {
break;
}
}
}
assertThrowsInstanceOfAsync(testDisposalThrowsAreThrown, CustomError1);
assertArrayEq(values, [0, 1, 2, 3, "return"]);
}
{
const values = [];
const iterator = createIterator(values, "return");
async function testReturnThrowsAreThrown() {
for await (await using d of iterator) {
if (d.val === 3) {
break;
}
}
}
assertThrowsInstanceOfAsync(testReturnThrowsAreThrown, CustomError2);
assertArrayEq(values, [0, 1, 2, 3, "return"]);
}
{
const values = [];
const iterator = createIterator(values, "both");
async function testReturnErrorsAreIgnoredIfDisposalThrows() {
for await (await using d of iterator) {
if (d.val === 3) {
break;
}
}
}
assertThrowsInstanceOfAsync(testReturnErrorsAreIgnoredIfDisposalThrows, CustomError1);
assertArrayEq(values, [0, 1, 2, 3, "return"]);
}
{
let values = [];
async function testThrowsWithNonlocalJumpsWithLabels(iteratorThrowingNature) {
const iter = createIterator(values, iteratorThrowingNature);
outer: {
for await (await using d of iter) {
if (d.val === 3) {
break outer;
}
}
}
}
assertThrowsInstanceOfAsync(() => testThrowsWithNonlocalJumpsWithLabels("disposal"), CustomError1);
assertArrayEq(values, [0, 1, 2, 3, "return"]);
values = [];
assertThrowsInstanceOfAsync(() => testThrowsWithNonlocalJumpsWithLabels("return"), CustomError2);
assertArrayEq(values, [0, 1, 2, 3, "return"]);
values = [];
assertThrowsInstanceOfAsync(() => testThrowsWithNonlocalJumpsWithLabels("both"), CustomError1);
assertArrayEq(values, [0, 1, 2, 3, "return"]);
}