Mocha test, before(Each) not run?

I am trying to test my mongoose model like:

Todo = require "../../../app/todos/Todo"

describe "Todo", ->
describe "Basic CRUD", ->

    before: (done) ->
        console.log "In b4"
        Todo.remove {}, (err) ->
            console.log "removed"
            done err

    it "can be added to database", (done) ->
        todo = new Todo
            title: "New todo"
        todo.save (err) ->
            if !err
                Todo.find { title: "New todo" }, (err, docs) ->
                    docs.length.should.equal 1
                    done(err)
            else 
                done err

For some reason, before or beforeEach does not trigger, why is that?