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load(libdir + "asserts.js");
{
async function test() {
const log = [];
const make = n => ({
async [Symbol.asyncDispose]() {
log.push(n);
},
[Symbol.dispose]() {
log.push(n);
}
});
async function* gen() {
yield make("head");
}
function* innerGen() {
yield make("inner");
}
for await (await using x of gen()) {
for (using innerX of innerGen()) {
using innerY = make("innermost")
{
using blockInner = make("blockInnermost")
}
break;
}
await using y = make("body");
try { break; } finally { log.push("finally"); }
}
return log.join(",");
}
let thenCalled = false;
test().then(r => {
assertEq(r, "blockInnermost,innermost,inner,finally,body,head")
thenCalled = true;
});
drainJobQueue();
assertEq(thenCalled, true);
}
{
const log = [];
const make = (n, throws = false) => ({
[Symbol.dispose]() {
log.push(n);
if (throws) throw new Error(n);
}
});
function* gen() { yield make("head"); }
let caught = null;
try {
for (using x of gen()) {
using y = make("body", true);
break;
}
} catch (e) {
caught = e;
} finally {
log.push("finally");
}
// Body disposer throws; head still disposed by the iterator-close path.
assertEq(log.join(","), "body,head,finally");
assertEq(caught?.message, "body");
}