/
effectScope.spec.ts
327 lines (258 loc) · 7.04 KB
/
effectScope.spec.ts
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import {
nextTick,
watch,
watchEffect,
reactive,
EffectScope,
onScopeDispose,
computed,
ref,
ComputedRef,
createApp,
getCurrentScope,
} from '../../../src'
import { mockWarn } from '../../helpers'
describe('reactivity/effect/scope', () => {
mockWarn(true)
it('should run', () => {
const fnSpy = jest.fn(() => {})
new EffectScope().run(fnSpy)
expect(fnSpy).toHaveBeenCalledTimes(1)
})
it('should accept zero argument', () => {
const scope = new EffectScope()
expect(scope.effects.length).toBe(0)
})
it('should return run value', () => {
expect(new EffectScope().run(() => 1)).toBe(1)
})
it('should collect the effects', async () => {
const scope = new EffectScope()
let dummy = 0
scope.run(() => {
const counter = reactive({ num: 0 })
watchEffect(() => (dummy = counter.num))
expect(dummy).toBe(0)
counter.num = 7
})
await nextTick()
expect(dummy).toBe(7)
// expect(scope.effects.length).toBe(1)
})
it('stop', async () => {
let dummy, doubled
const counter = reactive({ num: 0 })
const scope = new EffectScope()
scope.run(() => {
watchEffect(() => (dummy = counter.num))
watchEffect(() => (doubled = counter.num * 2))
})
// expect(scope.effects.length).toBe(2)
expect(dummy).toBe(0)
counter.num = 7
await nextTick()
expect(dummy).toBe(7)
expect(doubled).toBe(14)
scope.stop()
counter.num = 6
await nextTick()
expect(dummy).toBe(7)
expect(doubled).toBe(14)
})
it('should collect nested scope', async () => {
let dummy, doubled
const counter = reactive({ num: 0 })
const scope = new EffectScope()
scope.run(() => {
// nested scope
new EffectScope().run(() => {
watchEffect(() => (doubled = counter.num * 2))
})
watchEffect(() => (dummy = counter.num))
})
// expect(scope.effects.length).toBe(2)
expect(scope.effects[0]).toBeInstanceOf(EffectScope)
expect(dummy).toBe(0)
counter.num = 7
await nextTick()
expect(dummy).toBe(7)
expect(doubled).toBe(14)
// stop the nested scope as well
scope.stop()
counter.num = 6
await nextTick()
expect(dummy).toBe(7)
expect(doubled).toBe(14)
})
it('nested scope can be escaped', async () => {
let dummy, doubled
const counter = reactive({ num: 0 })
const scope = new EffectScope()
scope.run(() => {
watchEffect(() => (dummy = counter.num))
// nested scope
new EffectScope(true).run(() => {
watchEffect(() => (doubled = counter.num * 2))
})
})
expect(scope.effects.length).toBe(0)
expect(dummy).toBe(0)
counter.num = 7
await nextTick()
expect(dummy).toBe(7)
expect(doubled).toBe(14)
scope.stop()
counter.num = 6
await nextTick()
expect(dummy).toBe(7)
// nested scope should not be stoped
expect(doubled).toBe(12)
})
it('able to run the scope', async () => {
let dummy, doubled
const counter = reactive({ num: 0 })
const scope = new EffectScope()
scope.run(() => {
watchEffect(() => (dummy = counter.num))
})
// expect(scope.effects.length).toBe(1)
scope.run(() => {
watchEffect(() => (doubled = counter.num * 2))
})
// expect(scope.effects.length).toBe(2)
counter.num = 7
await nextTick()
expect(dummy).toBe(7)
expect(doubled).toBe(14)
scope.stop()
})
it('can not run an inactive scope', async () => {
let dummy, doubled
const counter = reactive({ num: 0 })
const scope = new EffectScope()
scope.run(() => {
watchEffect(() => (dummy = counter.num))
})
// expect(scope.effects.length).toBe(1)
scope.stop()
scope.run(() => {
watchEffect(() => (doubled = counter.num * 2))
})
expect(
'[Vue warn]: cannot run an inactive effect scope.'
).toHaveBeenWarned()
// expect(scope.effects.length).toBe(1)
counter.num = 7
await nextTick()
expect(dummy).toBe(0)
expect(doubled).toBe(undefined)
})
it('should fire onDispose hook', () => {
let dummy = 0
const scope = new EffectScope()
scope.run(() => {
onScopeDispose(() => (dummy += 1))
onScopeDispose(() => (dummy += 2))
})
scope.run(() => {
onScopeDispose(() => (dummy += 4))
})
expect(dummy).toBe(0)
scope.stop()
expect(dummy).toBe(7)
})
it('should warn onDispose() is called when there is no active effect scope', () => {
const spy = jest.fn()
const scope = new EffectScope()
scope.run(() => {
onScopeDispose(spy)
})
expect(spy).toHaveBeenCalledTimes(0)
onScopeDispose(spy)
expect(
'[Vue warn]: onDispose() is called when there is no active effect scope to be associated with.'
).toHaveBeenWarned()
scope.stop()
expect(spy).toHaveBeenCalledTimes(1)
})
it('test with higher level APIs', async () => {
const r = ref(1)
const computedSpy = jest.fn()
const watchSpy = jest.fn()
const watchEffectSpy = jest.fn()
let c: ComputedRef
const scope = new EffectScope()
scope.run(() => {
c = computed(() => {
computedSpy()
return r.value + 1
})
watch(r, watchSpy)
watchEffect(() => {
watchEffectSpy()
r.value
})
})
c!.value // computed is lazy so trigger collection
expect(computedSpy).toHaveBeenCalledTimes(1)
expect(watchSpy).toHaveBeenCalledTimes(0)
expect(watchEffectSpy).toHaveBeenCalledTimes(1)
r.value++
c!.value
await nextTick()
expect(computedSpy).toHaveBeenCalledTimes(2)
expect(watchSpy).toHaveBeenCalledTimes(1)
expect(watchEffectSpy).toHaveBeenCalledTimes(2)
scope.stop()
r.value++
c!.value
await nextTick()
// should not trigger anymore
expect(computedSpy).toHaveBeenCalledTimes(2)
expect(watchSpy).toHaveBeenCalledTimes(1)
expect(watchEffectSpy).toHaveBeenCalledTimes(2)
})
it('should stop along with parent component', async () => {
let dummy, doubled
const counter = reactive({ num: 0 })
const root = document.createElement('div')
const vm = createApp({
setup() {
const scope = new EffectScope()
scope.run(() => {
watchEffect(() => (dummy = counter.num))
watchEffect(() => (doubled = counter.num * 2))
})
},
})
vm.mount(root)
expect(dummy).toBe(0)
counter.num = 7
await nextTick()
expect(dummy).toBe(7)
expect(doubled).toBe(14)
vm.unmount()
counter.num = 6
await nextTick()
expect(dummy).toBe(7)
expect(doubled).toBe(14)
})
it('component should be a valid scope', async () => {
let dummy = 0
let scope
const root = document.createElement('div')
const vm = createApp({
setup() {
scope = getCurrentScope()
onScopeDispose(() => (dummy += 1))
scope?.cleanups.push(() => (dummy += 1))
},
})
vm.mount(root)
expect(dummy).toBe(0)
expect(scope).not.toBeFalsy()
vm.unmount()
await nextTick()
expect(dummy).toBe(2)
})
})