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// An explicit async stack should interrupt a Debugger.Frame chain.
var g = newGlobal({ newCompartment: true });
var dbg = new Debugger(g);
let done = false;
dbg.onDebuggerStatement = function (frame) {
// The frame has no "older" frame because the explicit async stack
// attached to the async function takes priority over the real
// parent frame that is tracked in the frame iterator.
assertEq(!!frame.older, false);
done = true;
};
g.eval(`
let draining = false;
async function run() {
await Promise.resolve();
// Make sure that the test is running within "drainJobQueue()".
assertEq(draining, true);
debugger;
}
(function main() {
run();
// Force resumption of the "run" function.
draining = true;
drainJobQueue();
draining = false;
})();
`);
assertEq(done, true);