Object-getPromiseReactions-02.js

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// Debugger.Object.protoype.getPromiseReactions reports directly resolved promises.

load(libdir + 'array-compare.js');

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

var dbg = new Debugger;

var DOg = dbg.addDebuggee(g);

g.eval(`

    var pResolve, pReject;

    var p = new Promise((resolve, reject) => { pResolve = resolve; pReject = reject });

    var p2 = new Promise((resolve, reject) => { resolve(p); });

    var p3 = new Promise((resolve, reject) => { resolve(p); });

    var p4 = new Promise((resolve, reject) => { resolve(p2); });

`);

var [DOp, DOp2, DOp3, DOp4] = [g.p, g.p2, g.p3, g.p4].map(p => DOg.makeDebuggeeValue(p));

// Since the standard resolving functions enqueue a job to do the `then` call,

// none of the reactions should be visible yet.

assertEq(true, arraysEqual(DOp.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp2.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp3.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp4.getPromiseReactions(), []));

// This should let them all appear in place.

drainJobQueue();

assertEq(true, arraysEqual(DOp.getPromiseReactions(), [DOp2, DOp3]));

assertEq(true, arraysEqual(DOp2.getPromiseReactions(), [DOp4]));

assertEq(true, arraysEqual(DOp3.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp4.getPromiseReactions(), []));

// Resolving the initial promise should kick off its reactions, but propagating

// that the rest of the way requires microtasks.

g.pResolve(42);

assertEq(true, arraysEqual(DOp.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp2.getPromiseReactions(), [DOp4]));

assertEq(true, arraysEqual(DOp3.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp4.getPromiseReactions(), []));

// Let the propagation complete.

drainJobQueue();

assertEq(true, arraysEqual(DOp.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp2.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp3.getPromiseReactions(), []));

assertEq(true, arraysEqual(DOp4.getPromiseReactions(), []));