235 lines
6.6 KiB
TypeScript
235 lines
6.6 KiB
TypeScript
import { ref, isRef } from '../src/ref'
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import {
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reactive,
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isReactive,
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toRaw,
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markNonReactive,
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shallowReactive
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} from '../src/reactive'
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import { mockWarn } from '@vue/shared'
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import { computed } from '../src/computed'
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describe('reactivity/reactive', () => {
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mockWarn()
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test('Object', () => {
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const original = { foo: 1 }
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const observed = reactive(original)
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expect(observed).not.toBe(original)
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expect(isReactive(observed)).toBe(true)
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expect(isReactive(original)).toBe(false)
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// get
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expect(observed.foo).toBe(1)
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// has
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expect('foo' in observed).toBe(true)
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// ownKeys
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expect(Object.keys(observed)).toEqual(['foo'])
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})
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test('Array', () => {
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const original = [{ foo: 1 }]
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const observed = reactive(original)
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expect(observed).not.toBe(original)
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expect(isReactive(observed)).toBe(true)
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expect(isReactive(original)).toBe(false)
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expect(isReactive(observed[0])).toBe(true)
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// get
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expect(observed[0].foo).toBe(1)
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// has
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expect(0 in observed).toBe(true)
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// ownKeys
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expect(Object.keys(observed)).toEqual(['0'])
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})
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test('cloned reactive Array should point to observed values', () => {
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const original = [{ foo: 1 }]
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const observed = reactive(original)
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const clone = observed.slice()
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expect(isReactive(clone[0])).toBe(true)
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expect(clone[0]).not.toBe(original[0])
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expect(clone[0]).toBe(observed[0])
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})
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test('Array identity methods should work with raw values', () => {
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const raw = {}
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const arr = reactive([{}, {}])
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arr.push(raw)
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expect(arr.indexOf(raw)).toBe(2)
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expect(arr.indexOf(raw, 3)).toBe(-1)
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expect(arr.includes(raw)).toBe(true)
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expect(arr.includes(raw, 3)).toBe(false)
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expect(arr.lastIndexOf(raw)).toBe(2)
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expect(arr.lastIndexOf(raw, 1)).toBe(-1)
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// should work also for the observed version
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const observed = arr[2]
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expect(arr.indexOf(observed)).toBe(2)
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expect(arr.indexOf(observed, 3)).toBe(-1)
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expect(arr.includes(observed)).toBe(true)
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expect(arr.includes(observed, 3)).toBe(false)
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expect(arr.lastIndexOf(observed)).toBe(2)
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expect(arr.lastIndexOf(observed, 1)).toBe(-1)
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})
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test('nested reactives', () => {
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const original = {
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nested: {
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foo: 1
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},
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array: [{ bar: 2 }]
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}
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const observed = reactive(original)
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expect(isReactive(observed.nested)).toBe(true)
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expect(isReactive(observed.array)).toBe(true)
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expect(isReactive(observed.array[0])).toBe(true)
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})
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test('observed value should proxy mutations to original (Object)', () => {
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const original: any = { foo: 1 }
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const observed = reactive(original)
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// set
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observed.bar = 1
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expect(observed.bar).toBe(1)
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expect(original.bar).toBe(1)
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// delete
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delete observed.foo
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expect('foo' in observed).toBe(false)
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expect('foo' in original).toBe(false)
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})
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test('observed value should proxy mutations to original (Array)', () => {
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const original: any[] = [{ foo: 1 }, { bar: 2 }]
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const observed = reactive(original)
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// set
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const value = { baz: 3 }
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const reactiveValue = reactive(value)
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observed[0] = value
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expect(observed[0]).toBe(reactiveValue)
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expect(original[0]).toBe(value)
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// delete
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delete observed[0]
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expect(observed[0]).toBeUndefined()
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expect(original[0]).toBeUndefined()
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// mutating methods
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observed.push(value)
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expect(observed[2]).toBe(reactiveValue)
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expect(original[2]).toBe(value)
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})
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test('setting a property with an unobserved value should wrap with reactive', () => {
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const observed = reactive<{ foo?: object }>({})
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const raw = {}
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observed.foo = raw
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expect(observed.foo).not.toBe(raw)
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expect(isReactive(observed.foo)).toBe(true)
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})
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test('observing already observed value should return same Proxy', () => {
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const original = { foo: 1 }
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const observed = reactive(original)
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const observed2 = reactive(observed)
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expect(observed2).toBe(observed)
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})
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test('observing the same value multiple times should return same Proxy', () => {
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const original = { foo: 1 }
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const observed = reactive(original)
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const observed2 = reactive(original)
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expect(observed2).toBe(observed)
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})
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test('should not pollute original object with Proxies', () => {
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const original: any = { foo: 1 }
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const original2 = { bar: 2 }
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const observed = reactive(original)
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const observed2 = reactive(original2)
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observed.bar = observed2
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expect(observed.bar).toBe(observed2)
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expect(original.bar).toBe(original2)
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})
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test('unwrap', () => {
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const original = { foo: 1 }
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const observed = reactive(original)
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expect(toRaw(observed)).toBe(original)
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expect(toRaw(original)).toBe(original)
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})
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test('should not unwrap Ref<T>', () => {
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const observedNumberRef = reactive(ref(1))
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const observedObjectRef = reactive(ref({ foo: 1 }))
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expect(isRef(observedNumberRef)).toBe(true)
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expect(isRef(observedObjectRef)).toBe(true)
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})
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test('should unwrap computed refs', () => {
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// readonly
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const a = computed(() => 1)
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// writable
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const b = computed({
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get: () => 1,
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set: () => {}
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})
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const obj = reactive({ a, b })
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// check type
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obj.a + 1
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obj.b + 1
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expect(typeof obj.a).toBe(`number`)
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expect(typeof obj.b).toBe(`number`)
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})
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test('non-observable values', () => {
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const assertValue = (value: any) => {
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reactive(value)
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expect(
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`value cannot be made reactive: ${String(value)}`
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).toHaveBeenWarnedLast()
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}
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// number
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assertValue(1)
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// string
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assertValue('foo')
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// boolean
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assertValue(false)
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// null
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assertValue(null)
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// undefined
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assertValue(undefined)
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// symbol
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const s = Symbol()
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assertValue(s)
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// built-ins should work and return same value
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const p = Promise.resolve()
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expect(reactive(p)).toBe(p)
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const r = new RegExp('')
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expect(reactive(r)).toBe(r)
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const d = new Date()
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expect(reactive(d)).toBe(d)
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})
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test('markNonReactive', () => {
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const obj = reactive({
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foo: { a: 1 },
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bar: markNonReactive({ b: 2 })
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})
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expect(isReactive(obj.foo)).toBe(true)
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expect(isReactive(obj.bar)).toBe(false)
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})
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describe('shallowReactive', () => {
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test('should not make non-reactive properties reactive', () => {
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const props = shallowReactive({ n: { foo: 1 } })
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expect(isReactive(props.n)).toBe(false)
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})
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test('should keep reactive properties reactive', () => {
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const props: any = shallowReactive({ n: reactive({ foo: 1 }) })
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props.n = reactive({ foo: 2 })
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expect(isReactive(props.n)).toBe(true)
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})
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})
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})
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