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55 lines
1.5 KiB
CoffeeScript
55 lines
1.5 KiB
CoffeeScript
{View, $$} = require 'space-pen'
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EventEmitter = require 'event-emitter'
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describe "SpacePen extensions", ->
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class TestView extends View
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@content: -> @div()
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[view, parent] = []
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beforeEach ->
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view = new TestView
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parent = $$ -> @div()
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parent.append(view)
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describe "View.observeConfig(keyPath, callback)", ->
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observeHandler = null
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beforeEach ->
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observeHandler = jasmine.createSpy("observeHandler")
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view.observeConfig "foo.bar", observeHandler
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expect(view.hasParent()).toBeTruthy()
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it "observes the keyPath and cancels the subscription when `.unobserveConfig()` is called", ->
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expect(observeHandler).toHaveBeenCalledWith(undefined)
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observeHandler.reset()
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config.set("foo.bar", "hello")
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expect(observeHandler).toHaveBeenCalledWith("hello")
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observeHandler.reset()
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view.unobserveConfig()
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config.set("foo.bar", "goodbye")
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expect(observeHandler).not.toHaveBeenCalled()
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it "unobserves when the view is removed", ->
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observeHandler.reset()
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parent.remove()
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config.set("foo.bar", "hello")
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expect(observeHandler).not.toHaveBeenCalled()
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describe "View.subscribe(eventEmitter, eventName, callback)", ->
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[emitter, eventHandler] = []
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beforeEach ->
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eventHandler = jasmine.createSpy 'eventHandler'
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emitter = $$ -> @div()
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view.subscribe emitter, 'foo', eventHandler
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it "subscribes to the given event emitter and unsubscribes when unsubscribe is called", ->
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emitter.trigger "foo"
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expect(eventHandler).toHaveBeenCalled()
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