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59 lines
1.4 KiB
59 lines
1.4 KiB
import Vue from 'vue'
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describe('Instance methods events', () => {
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let vm, spy
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beforeEach(() => {
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vm = new Vue()
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spy = jasmine.createSpy('emitter')
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})
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it('$on', () => {
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vm.$on('test', function () {
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// expect correct context
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expect(this).toBe(vm)
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spy.apply(this, arguments)
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})
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vm.$emit('test', 1, 2, 3, 4)
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expect(spy.calls.count()).toBe(1)
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expect(spy).toHaveBeenCalledWith(1, 2, 3, 4)
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})
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it('$once', () => {
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vm.$once('test', spy)
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vm.$emit('test', 1, 2, 3)
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vm.$emit('test', 2, 3, 4)
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expect(spy.calls.count()).toBe(1)
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expect(spy).toHaveBeenCalledWith(1, 2, 3)
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})
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it('$off', () => {
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vm.$on('test1', spy)
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vm.$on('test2', spy)
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vm.$off()
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vm.$emit('test1')
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vm.$emit('test2')
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expect(spy).not.toHaveBeenCalled()
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})
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it('$off event', () => {
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vm.$on('test1', spy)
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vm.$on('test2', spy)
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vm.$off('test1')
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vm.$off('test1') // test off something that's already off
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vm.$emit('test1', 1)
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vm.$emit('test2', 2)
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expect(spy.calls.count()).toBe(1)
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expect(spy).toHaveBeenCalledWith(2)
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})
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it('$off event + fn', () => {
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var spy2 = jasmine.createSpy('emitter')
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vm.$on('test', spy)
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vm.$on('test', spy2)
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vm.$off('test', spy)
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vm.$emit('test', 1, 2, 3)
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expect(spy).not.toHaveBeenCalled()
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expect(spy2.calls.count()).toBe(1)
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expect(spy2).toHaveBeenCalledWith(1, 2, 3)
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})
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})
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