TypeError: Object #<Test> has no method 'callback' on failing tests

[bpasero]

I am using expresso 0.9.2 and whenever a test is failing I am seeing the following error on each test case that is failing:

uncaught undefined: TypeError: Object # has no method 'callback'
at IncomingMessage. (/usr/local/lib/node_modules/expresso/bin/expresso:525:26)
at IncomingMessage.emit (events.js:81:20)
at HTTPParser.onMessageComplete (http.js:133:23)
at Socket.ondata (http.js:1231:22)
at Socket._onReadable (net.js:677:27)
at IOWatcher.onReadable as callback

TypeError: Object # has no method 'callback'
at IncomingMessage. (/usr/local/lib/node_modules/expresso/bin/expresso:525:26)
at IncomingMessage.emit (events.js:81:20)
at HTTPParser.onMessageComplete (http.js:133:23)
at Socket.ondata (http.js:1231:22)
at Socket._onReadable (net.js:677:27)
at IOWatcher.onReadable as callback

This makes it harder to actually see the stacktrace from the failing test. I can workaround this issue by adding a method "callback" from within my test, but I am not sure whats the purpose of this callback is.

[bfuster]

Me too :(

[dperezrada]

Same problem here. As bpasero said, set callback to avoid the problem:
exports.testHelloWorld = function(beforeExit, assert) {
this.callback = function(){};
...
}

[isidorn]

Love the progress here ^_^