mirror of https://github.com/vuejs/vue.git
76 lines
1.8 KiB
JavaScript
76 lines
1.8 KiB
JavaScript
var Emitter = require('../../../src/emitter')
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describe('Emitter', function () {
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var e, spy
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beforeEach(function () {
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e = new Emitter()
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spy = jasmine.createSpy('emitter')
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})
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it('on', function () {
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e.on('test', spy)
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e.emit('test', 1, 2 ,3, 4)
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expect(spy.calls.count()).toBe(1)
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expect(spy).toHaveBeenCalledWith(1, 2, 3, 4)
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})
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it('once', function () {
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e.once('test', spy)
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e.emit('test', 1, 2 ,3)
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e.emit('test', 2, 3, 4)
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expect(spy.calls.count()).toBe(1)
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expect(spy).toHaveBeenCalledWith(1, 2, 3, undefined)
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})
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it('off', function () {
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e.on('test1', spy)
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e.on('test2', spy)
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e.off()
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e.emit('test1')
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e.emit('test2')
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expect(spy.calls.count()).toBe(0)
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})
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it('off event', function () {
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e.on('test1', spy)
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e.on('test2', spy)
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e.off('test1')
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e.off('test1') // test off something that's already off
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e.emit('test1', 1)
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e.emit('test2', 2)
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expect(spy.calls.count()).toBe(1)
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expect(spy).toHaveBeenCalledWith(2, undefined, undefined, undefined)
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})
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it('off event + fn', function () {
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var spy2 = jasmine.createSpy('emitter')
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e.on('test', spy)
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e.on('test', spy2)
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e.off('test', spy)
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e.emit('test', 1, 2, 3)
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expect(spy.calls.count()).toBe(0)
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expect(spy2.calls.count()).toBe(1)
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expect(spy2).toHaveBeenCalledWith(1, 2, 3, undefined)
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})
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it('apply emit', function () {
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e.on('test', spy)
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e.applyEmit('test', 1)
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e.applyEmit('test', 1, 2, 3, 4, 5)
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expect(spy).toHaveBeenCalledWith(1)
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expect(spy).toHaveBeenCalledWith(1, 2, 3, 4, 5)
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})
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it('apply emit cancel', function () {
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expect(e._cancelled).toBe(false)
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e.on('test', function () {
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return false
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})
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e.applyEmit('test')
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expect(e._cancelled).toBe(true)
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e.applyEmit('other')
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expect(e._cancelled).toBe(false)
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})
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}) |