465 lines
12 KiB
TypeScript
465 lines
12 KiB
TypeScript
import { reactive, effect, isReactive, toRaw } from '../../src'
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describe('reactivity/collections', () => {
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function coverCollectionFn(collection: Set<any>, fnName: string) {
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const spy = jest.fn()
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let proxy = reactive(collection)
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;(collection as any)[fnName] = spy
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return [proxy as any, spy]
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}
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describe('Set', () => {
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it('instanceof', () => {
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const original = new Set()
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const observed = reactive(original)
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expect(isReactive(observed)).toBe(true)
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expect(original instanceof Set).toBe(true)
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expect(observed instanceof Set).toBe(true)
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})
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it('should observe mutations', () => {
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let dummy
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const set = reactive(new Set())
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effect(() => (dummy = set.has('value')))
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expect(dummy).toBe(false)
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set.add('value')
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expect(dummy).toBe(true)
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set.delete('value')
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expect(dummy).toBe(false)
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})
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it('should observe mutations with observed value', () => {
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let dummy
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const value = reactive({})
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const set = reactive(new Set())
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effect(() => (dummy = set.has(value)))
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expect(dummy).toBe(false)
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set.add(value)
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expect(dummy).toBe(true)
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set.delete(value)
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expect(dummy).toBe(false)
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})
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it('should observe for of iteration', () => {
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let dummy
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const set = reactive(new Set() as Set<number>)
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effect(() => {
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dummy = 0
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for (let num of set) {
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dummy += num
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}
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})
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expect(dummy).toBe(0)
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set.add(2)
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set.add(1)
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expect(dummy).toBe(3)
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set.delete(2)
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expect(dummy).toBe(1)
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set.clear()
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expect(dummy).toBe(0)
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})
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it('should observe forEach iteration', () => {
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let dummy: any
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const set = reactive(new Set())
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effect(() => {
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dummy = 0
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set.forEach(num => (dummy += num))
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})
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expect(dummy).toBe(0)
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set.add(2)
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set.add(1)
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expect(dummy).toBe(3)
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set.delete(2)
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expect(dummy).toBe(1)
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set.clear()
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expect(dummy).toBe(0)
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})
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it('should observe values iteration', () => {
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let dummy
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const set = reactive(new Set() as Set<number>)
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effect(() => {
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dummy = 0
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for (let num of set.values()) {
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dummy += num
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}
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})
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expect(dummy).toBe(0)
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set.add(2)
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set.add(1)
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expect(dummy).toBe(3)
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set.delete(2)
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expect(dummy).toBe(1)
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set.clear()
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expect(dummy).toBe(0)
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})
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it('should observe keys iteration', () => {
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let dummy
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const set = reactive(new Set() as Set<number>)
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effect(() => {
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dummy = 0
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for (let num of set.keys()) {
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dummy += num
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}
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})
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expect(dummy).toBe(0)
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set.add(2)
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set.add(1)
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expect(dummy).toBe(3)
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set.delete(2)
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expect(dummy).toBe(1)
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set.clear()
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expect(dummy).toBe(0)
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})
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it('should observe entries iteration', () => {
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let dummy
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const set = reactive(new Set<number>())
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effect(() => {
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dummy = 0
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// eslint-disable-next-line no-unused-vars
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for (let [key, num] of set.entries()) {
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key
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dummy += num
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}
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})
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expect(dummy).toBe(0)
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set.add(2)
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set.add(1)
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expect(dummy).toBe(3)
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set.delete(2)
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expect(dummy).toBe(1)
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set.clear()
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expect(dummy).toBe(0)
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})
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it('should be triggered by clearing', () => {
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let dummy
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const set = reactive(new Set())
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effect(() => (dummy = set.has('key')))
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expect(dummy).toBe(false)
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set.add('key')
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expect(dummy).toBe(true)
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set.clear()
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expect(dummy).toBe(false)
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})
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it('should not observe custom property mutations', () => {
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let dummy
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const set: any = reactive(new Set())
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effect(() => (dummy = set.customProp))
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expect(dummy).toBe(undefined)
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set.customProp = 'Hello World'
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expect(dummy).toBe(undefined)
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})
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it('should observe size mutations', () => {
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let dummy
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const set = reactive(new Set())
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effect(() => (dummy = set.size))
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expect(dummy).toBe(0)
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set.add('value')
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set.add('value2')
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expect(dummy).toBe(2)
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set.delete('value')
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expect(dummy).toBe(1)
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set.clear()
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expect(dummy).toBe(0)
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})
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it('should not observe non value changing mutations', () => {
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let dummy
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const set = reactive(new Set())
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const setSpy = jest.fn(() => (dummy = set.has('value')))
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effect(setSpy)
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(1)
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set.add('value')
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expect(dummy).toBe(true)
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expect(setSpy).toHaveBeenCalledTimes(2)
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set.add('value')
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expect(dummy).toBe(true)
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expect(setSpy).toHaveBeenCalledTimes(2)
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set.delete('value')
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(3)
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set.delete('value')
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(3)
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set.clear()
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(3)
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})
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it('should not observe raw data', () => {
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let dummy
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const set = reactive(new Set())
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effect(() => (dummy = toRaw(set).has('value')))
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expect(dummy).toBe(false)
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set.add('value')
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expect(dummy).toBe(false)
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})
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it('should not observe raw iterations', () => {
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let dummy = 0
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const set = reactive(new Set<number>())
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effect(() => {
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dummy = 0
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for (let [num] of toRaw(set).entries()) {
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dummy += num
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}
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for (let num of toRaw(set).keys()) {
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dummy += num
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}
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for (let num of toRaw(set).values()) {
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dummy += num
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}
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toRaw(set).forEach(num => {
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dummy += num
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})
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for (let num of toRaw(set)) {
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dummy += num
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}
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})
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expect(dummy).toBe(0)
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set.add(2)
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set.add(3)
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expect(dummy).toBe(0)
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set.delete(2)
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expect(dummy).toBe(0)
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})
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it('should not be triggered by raw mutations', () => {
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let dummy
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const set = reactive(new Set())
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effect(() => (dummy = set.has('value')))
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expect(dummy).toBe(false)
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toRaw(set).add('value')
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expect(dummy).toBe(false)
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dummy = true
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toRaw(set).delete('value')
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expect(dummy).toBe(true)
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toRaw(set).clear()
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expect(dummy).toBe(true)
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})
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it('should not observe raw size mutations', () => {
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let dummy
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const set = reactive(new Set())
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effect(() => (dummy = toRaw(set).size))
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expect(dummy).toBe(0)
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set.add('value')
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expect(dummy).toBe(0)
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})
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it('should not be triggered by raw size mutations', () => {
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let dummy
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const set = reactive(new Set())
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effect(() => (dummy = set.size))
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expect(dummy).toBe(0)
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toRaw(set).add('value')
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expect(dummy).toBe(0)
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})
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it('should support objects as key', () => {
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let dummy
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const key = {}
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const set = reactive(new Set())
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const setSpy = jest.fn(() => (dummy = set.has(key)))
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effect(setSpy)
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(1)
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set.add({})
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expect(dummy).toBe(false)
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expect(setSpy).toHaveBeenCalledTimes(1)
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set.add(key)
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expect(dummy).toBe(true)
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expect(setSpy).toHaveBeenCalledTimes(2)
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})
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it('should not pollute original Set with Proxies', () => {
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const set = new Set()
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const observed = reactive(set)
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const value = reactive({})
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observed.add(value)
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expect(observed.has(value)).toBe(true)
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expect(set.has(value)).toBe(false)
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})
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it('should observe nested values in iterations (forEach)', () => {
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const set = reactive(new Set([{ foo: 1 }]))
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let dummy: any
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effect(() => {
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dummy = 0
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set.forEach(value => {
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expect(isReactive(value)).toBe(true)
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dummy += value.foo
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})
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})
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expect(dummy).toBe(1)
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set.forEach(value => {
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value.foo++
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})
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expect(dummy).toBe(2)
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})
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it('should observe nested values in iterations (values)', () => {
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const set = reactive(new Set([{ foo: 1 }]))
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let dummy: any
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effect(() => {
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dummy = 0
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for (const value of set.values()) {
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expect(isReactive(value)).toBe(true)
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dummy += value.foo
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}
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})
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expect(dummy).toBe(1)
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set.forEach(value => {
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value.foo++
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})
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expect(dummy).toBe(2)
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})
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it('should observe nested values in iterations (entries)', () => {
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const set = reactive(new Set([{ foo: 1 }]))
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let dummy: any
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effect(() => {
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dummy = 0
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for (const [key, value] of set.entries()) {
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expect(isReactive(key)).toBe(true)
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expect(isReactive(value)).toBe(true)
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dummy += value.foo
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}
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})
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expect(dummy).toBe(1)
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set.forEach(value => {
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value.foo++
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})
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expect(dummy).toBe(2)
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})
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it('should observe nested values in iterations (for...of)', () => {
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const set = reactive(new Set([{ foo: 1 }]))
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let dummy: any
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effect(() => {
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dummy = 0
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for (const value of set) {
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expect(isReactive(value)).toBe(true)
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dummy += value.foo
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}
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})
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expect(dummy).toBe(1)
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set.forEach(value => {
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value.foo++
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})
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expect(dummy).toBe(2)
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})
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it('should work with reactive entries in raw set', () => {
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const raw = new Set()
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const entry = reactive({})
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raw.add(entry)
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const set = reactive(raw)
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expect(set.has(entry)).toBe(true)
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expect(set.delete(entry)).toBe(true)
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expect(set.has(entry)).toBe(false)
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})
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it('should track deletion of reactive entries in raw set', () => {
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const raw = new Set()
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const entry = reactive({})
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raw.add(entry)
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const set = reactive(raw)
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let dummy
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effect(() => {
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dummy = set.has(entry)
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})
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expect(dummy).toBe(true)
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set.delete(entry)
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expect(dummy).toBe(false)
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})
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it('should warn when set contains both raw and reactive versions of the same object', () => {
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const raw = new Set()
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const rawKey = {}
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const key = reactive(rawKey)
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raw.add(rawKey)
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raw.add(key)
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const set = reactive(raw)
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set.delete(key)
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expect(
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`Reactive Set contains both the raw and reactive`
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).toHaveBeenWarned()
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})
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it('thisArg', () => {
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const raw = new Set(['value'])
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const proxy = reactive(raw)
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const thisArg = {}
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let count = 0
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proxy.forEach(function (this: {}, value, _, set) {
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++count
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expect(this).toBe(thisArg)
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expect(value).toBe('value')
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expect(set).toBe(proxy)
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}, thisArg)
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expect(count).toBe(1)
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})
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it('should trigger Set.has only once for non-reactive keys', () => {
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const [proxy, spy] = coverCollectionFn(new Set(), 'has')
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proxy.has('foo')
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expect(spy).toBeCalledTimes(1)
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})
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it('should trigger Set.add only once for non-reactive keys', () => {
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const [proxy, spy] = coverCollectionFn(new Set(), 'add')
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proxy.add('foo')
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expect(spy).toBeCalledTimes(1)
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})
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it('should trigger Set.delete only once for non-reactive keys', () => {
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const [proxy, spy] = coverCollectionFn(new Set(), 'delete')
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proxy.delete('foo')
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expect(spy).toBeCalledTimes(1)
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})
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it('should trigger Set.clear only once for non-reactive keys', () => {
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const [proxy, spy] = coverCollectionFn(new Set(), 'clear')
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proxy.clear()
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expect(spy).toBeCalledTimes(1)
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})
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it('should return proxy from Set.add call', () => {
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const set = reactive(new Set())
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const result = set.add('a')
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expect(result).toBe(set)
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})
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})
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})
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