failure-on-resume.js

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const dbgGlobal = newGlobal({ newCompartment: true });

dbgGlobal.parent = this;

dbgGlobal.eval(`

var entered = 0;

var forceReturn = false;

Debugger(parent).onEnterFrame = function () {

  entered++;

  if (forceReturn) {

    return { return: "force return" };

  return undefined;

};

`);

  function* f1() { yield 10; };

  dbgGlobal.entered = 0;

  let g = f1();

  assertEq(dbgGlobal.entered, 1);

  dbgGlobal.forceReturn = true;

  let ret = g.next();

  dbgGlobal.forceReturn = false;

  assertEq(dbgGlobal.entered, 2);

  assertEq(ret.value, "force return");

  async function f2() { await {}; }

  dbgGlobal.entered = 0;

  let p = f2();

  assertEq(dbgGlobal.entered, 1);

  dbgGlobal.forceReturn = true;

  drainJobQueue();

  dbgGlobal.forceReturn = false;

  assertEq(dbgGlobal.entered, 2);

  let ret = null;

  p.then(x => ret = x);

  drainJobQueue();

  assertEq(ret, "force return");

  async function* f3() { await {}; }

  dbgGlobal.entered = 0;

  let g = f3();

  assertEq(dbgGlobal.entered, 1);

  dbgGlobal.forceReturn = true;

  let p = g.next();

  dbgGlobal.forceReturn = false;

  assertEq(dbgGlobal.entered, 2);

  let ret = null;

  p.then(v => ret = v);

  drainJobQueue();

  assertEq(ret.value, "force return");

  let m = registerModule("1", parseModule("await {};"));

  moduleLink(m);

  dbgGlobal.entered = 0;

  let p = moduleEvaluate(m);

  assertEq(dbgGlobal.entered, 1);

  dbgGlobal.forceReturn = true;

  drainJobQueue();

  dbgGlobal.forceReturn = false;

  assertEq(dbgGlobal.entered, 2);

  let ret = null;

  p.then(x => ret = x);

  drainJobQueue();

  assertEq(ret, undefined);