Support question - Errors thrown in code called asynchronously

[ORESoftware]

I am just starting to use this library, and trying to understand how vows knows if my codeblock is asynchronous or not. It seems like in even the simplest case it fails to work as I would expect.

// my-first-test.js

var vows = require('vows'),
    assert = require('assert');

vows.describe('Deep Thought').addBatch({
    'part 1': {
        topic: new Object({foo:'bar'}),

        'should know the answer to the ultimate question of life': function (deepThought) {
            setTimeout(function(){
                assert.equal (obj.foo,'br');
            },1000);

            setImmediate(function(){
                assert.equal (obj.foo,'ba');
            });
        }
    },
    'part 2': {
        topic: new Object({foo:'baz'}),

        'should know the answer to the ultimate question of life': function (obj) {
            setTimeout(function(){
                assert.equal (obj.foo,'br');
            },1000);

            setImmediate(function(){
                assert.equal (obj.foo,'ba');
            });
        }
    }
}).run();

what happens, is that upon the first assert error, the test framework conks out. Ideally, upon each assertion error, they could get trapped and the test library could move on to the next test.
Is it possible to test asynchronous code like this? Am I missing something?

as you can see, the output of

$ node my-first-test.js

is

·· ✓ OK » 2 honored (0.009s) 

assert.js:89
  throw new assert.AssertionError({
  ^
AssertionError: expected {expected},
    got  {actual} ({operator})
    at Immediate._onImmediate (/Users/amills001c/WebstormProjects/ORESoftware/suman/competition/vows/ex1.js:14:24)
    at processImmediate [as _immediateCallback] (timers.js:383:17)

I am aware, that with domains being deprecated in Node core, it may be impossible to trap errors that are thrown asynchronously...

but if I fix so that the assert's don't throw:

var vows = require('vows'),
    assert = require('assert');

vows.describe('Deep Thought').addBatch({
    'part 1': {
        topic: new Object({foo:'bar'}),

        'should know the answer to the ultimate question of life': function (obj) {
            setTimeout(function(){
                assert.equal (obj.foo,'bar');
            },1000);

            setImmediate(function(){
                assert.equal (obj.foo,'bar');
            });
        }
    },
    'part 2': {
        topic: new Object({foo:'baz'}),

        'should know the answer to the ultimate question of life': function (obj) {
            setTimeout(function(){
                assert.equal (obj.foo,'baz');
            },1000);

            setImmediate(function(){
                assert.equal (obj.foo,'baz');
            });
        }
    }
}).run();

then I get

·· ✓ OK » 2 honored (0.008s) 

[ORESoftware]

As you can see, AVA has the same problem as your library

avajs/ava#567

because both Vows and AVA run tests asynchronously, not just in series

[evanp]

You need to do all your async stuff in the topic. The tests are sync.