gistfile1.js

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

vows.describe('Buggy Test').addBatch({
    'when async test returns error': {
        topic: function() {
            var callback = this.callback;
            setTimeout(function() {
                callback(new Error());
            }, 100);
        },
        'and we use nested context': {
            // the actual code below is not important
            // it's just to work around "Could not find any tests to run." error.
            topic: function() {
                var callback = this.callback;
                process.nextTick(function() {
                    callback(null, 'Hello World');
                });
            },
            'we receive "Hello World"': function(message) {
                assert.equal(message, 'Hello World');
            }
        }
    }
}).export(module);