class Counter
    count: 0

    constructor: ->
        @count = 0

    increment: ->
        @count++

    decrement: ->
        @count--

    reset: ->
        @count = 0

root = exports ? this
root.Counter = Counter

describe("Counter", ->
    counter = new Counter
    it("shold have 0 as a count variable at first", ->
        expect(counter.count).toBe(0)
    )

    describe('increment()', ->
        it("should count up from 0 to 1", ->
            expect(counter.increment()).toBe(1)
        )
    )
)

class Counter
    count: 0

    constructor: ->
        @count = 0

    increment: ->
        ++@count

    decrement: ->
        --@count

    reset: ->
        @count = 0

root = exports ? this
root.Counter = Counter

class Counter
  count: 0

  constructor: ->
    @count = 0

  increment: ->
    @count++
    @count

  decrement: ->
    @count--
    @count
  reset: ->
    @count = 0

root = exports ? this
root.Counter = Counter

describe('increment()', ->
  it("should count up from 0 to 1", ->
    expect(counter.count).toBe(0)
    counter.increment()
    expect(counter.count).toBe(1)
  )
)