all property is available test

sample.coffee

should = require 'should'

method = (a, b)->
  unless a and b
    return false
  return true

describe 'logical test', ->
  it 'missing a', ->
    r = method false, true
    r.should.be.equal false

  it 'missing b', ->
    r = method true, false
    r.should.be.equal false

  it 'missing both', ->
    r = method false, false
    r.should.be.equal false

  it 'all ok', ->
    r = method true, true
    r.should.be.equal true