Frame-this-16.js - mozsearch

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// Test that Debugger.Frame.prototype.this works on a suspended async

// generator function.

load(libdir + "asserts.js");

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

const dbg = new Debugger();

const gDO = dbg.addDebuggee(g);

g.eval(`

var context = {};

var f = async function*() {

  await Promise.resolve();

  return this;

}.bind(context);

`);

let frame;

dbg.onEnterFrame = f => {

  frame = f;

  assertEq(frame.this, gDO.makeDebuggeeValue(g.context));

  dbg.onEnterFrame = undefined;

};

(async () => {

  const it = g.f();

  assertEq(!!frame, true);

  assertEq(frame.this, gDO.makeDebuggeeValue(g.context));

  const promise = it.next();

  assertEq(frame.this, gDO.makeDebuggeeValue(g.context));

  await promise;

  assertThrowsInstanceOf(() => frame.this, Error);

})();