143 lines
4.0 KiB
TypeScript
143 lines
4.0 KiB
TypeScript
import { reactive, effect, toRaw, isReactive } from '../../src'
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describe('reactivity/collections', () => {
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describe('WeakMap', () => {
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test('instanceof', () => {
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const original = new WeakMap()
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const observed = reactive(original)
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expect(isReactive(observed)).toBe(true)
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expect(original instanceof WeakMap).toBe(true)
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expect(observed instanceof WeakMap).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 key = {}
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const map = reactive(new WeakMap())
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effect(() => {
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dummy = map.get(key)
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})
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expect(dummy).toBe(undefined)
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map.set(key, 'value')
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expect(dummy).toBe('value')
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map.set(key, 'value2')
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expect(dummy).toBe('value2')
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map.delete(key)
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expect(dummy).toBe(undefined)
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})
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it('should observe mutations with observed value as key', () => {
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let dummy
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const key = reactive({})
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const value = reactive({})
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const map = reactive(new WeakMap())
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effect(() => {
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dummy = map.get(key)
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})
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expect(dummy).toBe(undefined)
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map.set(key, value)
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expect(dummy).toBe(value)
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map.delete(key)
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expect(dummy).toBe(undefined)
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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 map: any = reactive(new WeakMap())
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effect(() => (dummy = map.customProp))
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expect(dummy).toBe(undefined)
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map.customProp = 'Hello World'
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expect(dummy).toBe(undefined)
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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 key = {}
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const map = reactive(new WeakMap())
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const mapSpy = jest.fn(() => (dummy = map.get(key)))
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effect(mapSpy)
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expect(dummy).toBe(undefined)
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expect(mapSpy).toHaveBeenCalledTimes(1)
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map.set(key, undefined)
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expect(dummy).toBe(undefined)
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expect(mapSpy).toHaveBeenCalledTimes(2)
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map.set(key, 'value')
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expect(dummy).toBe('value')
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expect(mapSpy).toHaveBeenCalledTimes(3)
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map.set(key, 'value')
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expect(dummy).toBe('value')
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expect(mapSpy).toHaveBeenCalledTimes(3)
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map.delete(key)
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expect(dummy).toBe(undefined)
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expect(mapSpy).toHaveBeenCalledTimes(4)
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map.delete(key)
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expect(dummy).toBe(undefined)
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expect(mapSpy).toHaveBeenCalledTimes(4)
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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 key = {}
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const map = reactive(new WeakMap())
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effect(() => (dummy = toRaw(map).get(key)))
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expect(dummy).toBe(undefined)
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map.set(key, 'Hello')
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expect(dummy).toBe(undefined)
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map.delete(key)
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expect(dummy).toBe(undefined)
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})
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it('should not pollute original Map with Proxies', () => {
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const map = new WeakMap()
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const observed = reactive(map)
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const key = {}
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const value = reactive({})
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observed.set(key, value)
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expect(map.get(key)).not.toBe(value)
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expect(map.get(key)).toBe(toRaw(value))
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})
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it('should return observable versions of contained values', () => {
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const observed = reactive(new WeakMap())
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const key = {}
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const value = {}
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observed.set(key, value)
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const wrapped = observed.get(key)
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expect(isReactive(wrapped)).toBe(true)
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expect(toRaw(wrapped)).toBe(value)
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})
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it('should observed nested data', () => {
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const observed = reactive(new WeakMap())
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const key = {}
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observed.set(key, { a: 1 })
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let dummy
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effect(() => {
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dummy = observed.get(key).a
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})
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observed.get(key).a = 2
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expect(dummy).toBe(2)
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})
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it('should not be trigger when the value and the old value both are NaN', () => {
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const map = new WeakMap()
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const key = {}
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map.set(key, NaN)
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const mapSpy = jest.fn(() => map.get(key))
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effect(mapSpy)
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map.set(key, NaN)
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expect(mapSpy).toHaveBeenCalledTimes(1)
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})
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it('should return proxy from WeakMap.set call', () => {
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const map = reactive(new WeakMap())
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const result = map.set({}, 'a')
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expect(result).toBe(map)
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})
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})
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})
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