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forked fromvuejs/vue

Commit9e04f6a

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schipigayyx990803
authored andcommitted
test: add unit tests for core/observer/dep (vuejs#7738)
1 parent6b8516b commit9e04f6a

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importDepfrom'core/observer/dep'
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describe('Dep',()=>{
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letdep
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beforeEach(()=>{
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dep=newDep()
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})
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describe('instance',()=>{
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it('should be created with correct properties',()=>{
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expect(dep.subs.length).toBe(0)
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expect(newDep().id).toBe(dep.id+1)
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})
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})
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describe('addSub()',()=>{
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it('should add sub',()=>{
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dep.addSub(null)
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expect(dep.subs.length).toBe(1)
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expect(dep.subs[0]).toBe(null)
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})
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})
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describe('removeSub()',()=>{
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it('should remove sub',()=>{
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dep.subs.push(null)
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dep.removeSub(null)
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expect(dep.subs.length).toBe(0)
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})
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})
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describe('depend()',()=>{
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let_target
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beforeAll(()=>{
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_target=Dep.target
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})
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afterAll(()=>{
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Dep.target=_target
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})
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it('should do nothing if no target',()=>{
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Dep.target=null
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dep.depend()
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})
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it('should add itself to target',()=>{
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Dep.target=jasmine.createSpyObj('TARGET',['addDep'])
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dep.depend()
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expect(Dep.target.addDep).toHaveBeenCalledWith(dep)
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})
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})
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describe('notify()',()=>{
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it('should notify subs',()=>{
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dep.subs.push(jasmine.createSpyObj('SUB',['update']))
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dep.notify()
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expect(dep.subs[0].update).toHaveBeenCalled()
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})
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})
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})

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