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100 lines
3.3 KiB
CoffeeScript
100 lines
3.3 KiB
CoffeeScript
{expect, calls} = require 'racer/test/util'
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EventDispatcher = require '../lib/EventDispatcher'
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describe 'EventDispatcher', ->
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# Names must be a valid object key
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name1 = 'test event'
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name2 = 89
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# Listeners can be anything that is representable in plain JSON
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listener1 = [1, 2, 'qu"a"il', "'", {arr: ['x', 'y']}]
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listener2 = 0
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listener3 = 'stuff'
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listener4 = true
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# The second and third parameters sent to trigger are simply passed through
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# to the callback function. They can be anything.
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value1 = 'test value'
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options1 = {option: 4}
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it 'should work without callbacks', ->
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dispatcher = new EventDispatcher
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dispatcher.bind name1, listener1
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dispatcher.trigger name1, value1, options1
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it 'calls onTrigger', calls 2, (done) ->
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dispatcher = new EventDispatcher
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onTrigger: (name, listener, value, options) ->
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expect(listener).to.eql listener1
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expect(value).to.equal value1
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expect(options).to.equal options1
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done()
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dispatcher.bind name1, listener1
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dispatcher.trigger name1, value1, options1
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dispatcher.trigger name1, value1, options1
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it 'calls onTrigger without listener', calls 2, (done) ->
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dispatcher = new EventDispatcher
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onTrigger: (name, listener, value, options) ->
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expect(listener).to.equal undefined
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expect(value).to.equal value1
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expect(options).to.equal options1
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done()
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dispatcher.bind name1
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dispatcher.trigger name1, value1, options1
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dispatcher.trigger name1, value1, options1
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it 'calls onTrigger for multiple listeners', calls 1, (done) ->
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counts = {all: 0}
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beforeExit = ->
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expect(counts[listener2]).to.equal 1
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expect(counts[listener3]).to.equal 3
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expect(counts[listener4]).to.equal 1
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done()
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dispatcher = new EventDispatcher
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onTrigger: (name, listener, value, options) ->
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counts[listener] = (counts[listener] || 0) + 1
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expect(value).to.equal value1
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expect(options).to.equal options1
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beforeExit() if ++counts.all == 5
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dispatcher.bind name1, listener2
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dispatcher.bind name1, listener3
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dispatcher.bind name1, listener4
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dispatcher.bind name2, listener3
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dispatcher.trigger name1, value1, options1
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dispatcher.trigger name2, value1, options1
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dispatcher.trigger name2, value1, options1
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it 'test EventDispatcher remove listener after failed trigger', calls 1, (done) ->
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dispatcher = new EventDispatcher
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onTrigger: ->
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done()
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return false
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dispatcher.bind name1
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dispatcher.trigger name1
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dispatcher.trigger name1
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it 'test EventDispatcher do not trigger twice after double bind', calls 1, (done) ->
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dispatcher = new EventDispatcher onTrigger: done
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dispatcher.bind name1, listener1
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dispatcher.bind name1, listener1
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dispatcher.trigger name1
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it 'test EventDispatcher bind callback', calls 3, (done) ->
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dispatcher = new EventDispatcher
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onTrigger: (name, listener, value, options) ->
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expect(listener).to.eql listener1
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expect(value).to.equal value1
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expect(options).to.equal options1
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done()
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onBind: (name, listener) ->
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expect(name).to.equal name1
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expect(listener).to.eql listener1
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done()
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dispatcher.bind name1, listener1
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dispatcher.trigger name1, value1, options1
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dispatcher.trigger name1, value1, options1
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