onEnterFrame-async-resumption-01.js

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// A Debugger can {return:} from the first onEnterFrame for an async function.

// (The exact behavior is undocumented; we're testing that it doesn't crash.)

ignoreUnhandledRejections();

let g = newGlobal({newCompartment: true});

g.hit2 = false;

g.eval(`async function f(x) { await x; return "ponies"; }`);

let dbg = new Debugger;

let gw = dbg.addDebuggee(g);

let hits = 0;

let resumption = undefined;

dbg.onEnterFrame = frame => {

    if (frame.type == "call" && frame.callee.name === "f") {

        frame.onPop = completion => {

            assertEq(completion.return.isPromise, true);

            hits++;

};

        // If we force-return a generator object here, the caller will receive

        // a promise object resolved with that generator.

        resumption = frame.eval(`(function* f2() { hit2 = true; })()`);

        assertEq(resumption.return.class, "Generator");

        return resumption;

};

let p = g.f(0);

assertEq(hits, 1);

assertEq(g.hit2, false);

let pw = gw.makeDebuggeeValue(p);

assertEq(pw.isPromise, true);

assertEq(pw.promiseState, "fulfilled");

assertEq(pw.promiseValue, resumption.return);