kickstart-node/lib-core/tests/debouncer.coffee

A front-end framework for clean HTML and fast performance

assert = require("chai").assert
expect = require("chai").expect

describe 'Debouncer', ->
  it 'should fire after a default interval of 1 second.', (done) ->
    window.one = 0
    this.timeout 2000
    setOne = ->
      window.one = 1

    k$.debounce setOne, 'change zero to one'
    setTimeout ->
      if one == 1
        done()
      else
        console.error "Found #{one}"
    , 1200

  it 'should suspend firing if called again during that second', (done) ->
    window.one = 0
    this.timeout 2500

    setOne = ->
      window.one = 1

    setTimeout ->
      k$.debounce setOne, 'change zero to one'
    , 500

    setTimeout ->
      k$.debounce setOne, 'change zero to one'
    , 1000

    setTimeout ->
      k$.debounce setOne, 'change zero to one'
    , 1500

    setTimeout ->
      k$.debounce setOne, 'change zero to one'
    , 2000

    setTimeout ->
      if one == 0
        done()
      else
        console.error "Found #{one}"
    , 2100

  it 'should suspend firing if called again during a custom interval', (done) ->
    this.timeout 4000
    setTimeout ->
      if one == 1
        done()
      else
        console.error "Found #{one}"
    , 2100