mpromise/Monk promise never resolves

Question

I can't seem to figure out why my promise never resolves when I pass it a function. I have a class method like this:

test(){
    return this.dbCollection.insert(...);
}

Which is inserting some data into a MongoDB collection via Monk. It returns a promise. I'm calling this method from another class like this:

var testClass = new TestClass();
testClass.test().onResolve(...);

Here's where I'm hitting trouble. If I do this:

testClass.test().onResolve(console.log('Resolved!'));

The promise resolves, I see "Resolved!" in the console, and everything works as expected. If I check using the MongoDB console, I can see the data was indeed inserted. However, if I do this:

testClass.test().onResolve(function(err, data){
    console.log('Resolved!');
});

The promise never resolves, nothing is printed to the console, but the data is still inserted. Has anyone ever seen this behavior before? I believe it's an issue with mpromise, so I tagged Mongoose since it uses the same package for promises.

Answer 1

Thanks for the help @Bergi. Like you suggested, the promise wasn't actually resolving. It turned out to be a problem with mpromise's all() method (ie apparently I don't fully understand how it works). test() was returning an aggregation of promises using all() , and that's what wasn't resolving. When that was taken out of the equation, everything worked as expected. Now to figure out what's going on with all() ...