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444325893b
This makes use of the new ES6 WeakMap feature, which allows for a hash map that's keyed by object.
43 lines
1.4 KiB
CoffeeScript
43 lines
1.4 KiB
CoffeeScript
Subscriber = require 'subscriber'
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EventEmitter = require 'event-emitter'
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_ = require 'underscore'
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describe "Subscriber", ->
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[emitter1, emitter2, event1Handler, event2Handler, subscriber] = []
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class TestEventEmitter
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_.extend TestEventEmitter.prototype, EventEmitter
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class TestSubscriber
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_.extend TestSubscriber.prototype, Subscriber
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beforeEach ->
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emitter1 = new TestEventEmitter
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emitter2 = new TestEventEmitter
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subscriber = new TestSubscriber
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event1Handler = jasmine.createSpy("event1Handler")
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event2Handler = jasmine.createSpy("event2Handler")
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subscriber.subscribe emitter1, 'event1', event1Handler
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subscriber.subscribe emitter2, 'event2', event2Handler
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it "subscribes to events on the specified object", ->
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emitter1.trigger 'event1', 'foo'
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expect(event1Handler).toHaveBeenCalledWith('foo')
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emitter2.trigger 'event2', 'bar'
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expect(event2Handler).toHaveBeenCalledWith('bar')
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it "allows an object to unsubscribe en-masse", ->
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subscriber.unsubscribe()
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emitter1.trigger 'event1', 'foo'
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emitter2.trigger 'event2', 'bar'
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expect(event1Handler).not.toHaveBeenCalled()
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expect(event2Handler).not.toHaveBeenCalled()
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it "allows an object to unsubscribe from a specific object", ->
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subscriber.unsubscribe(emitter1)
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emitter1.trigger 'event1', 'foo'
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emitter2.trigger 'event2', 'bar'
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expect(event1Handler).not.toHaveBeenCalled()
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expect(event2Handler).toHaveBeenCalledWith('bar')
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