Q.ninvoke should handle a promise for an object that provides a Node method

[andreas-karlsson]

Might be me not grasping Q. But it's real confusing that you can't do

promise.ninvoke('hello','world')

Here's a full example:

"use strict"
var Q = require('q');

var log = console.log.bind(console);

function testObj(cb) {
    cb(null, {
        hello: function(name, cb) { 
            if(cb)
                cb(null, 'hello ' + name);
            else 
                return 'hello ' + name;
        }
    })
}

// following will throw in end, but using invoke instead of ninvoke makes it work
Q.ncall(testObj)
.ninvoke('hello', 'world') 
.then(log)
.end();

[kriskowal]

Looks like a legitimate case to me. We should add it to the test suite.