vue3-yuanma/packages/runtime-core/__tests__/component.spec.ts
2020-03-16 10:19:06 -04:00

147 lines
3.2 KiB
TypeScript

import {
h,
ref,
render,
nodeOps,
nextTick,
defineComponent
} from '@vue/runtime-test'
describe('renderer: component', () => {
test.todo('should work')
test.todo('shouldUpdateComponent')
test.todo('componentProxy')
describe('componentProps', () => {
test.todo('should work')
test('should convert empty booleans to true', () => {
let b1: any, b2: any, b3: any
const Comp = defineComponent({
props: {
b1: Boolean,
b2: [Boolean, String],
b3: [String, Boolean]
},
setup(props) {
;({ b1, b2, b3 } = props)
return () => ''
}
})
render(
h(Comp, <any>{ b1: '', b2: '', b3: '' }),
nodeOps.createElement('div')
)
expect(b1).toBe(true)
expect(b2).toBe(true)
expect(b3).toBe('')
})
})
describe('slots', () => {
test('should respect $stable flag', async () => {
const flag1 = ref(1)
const flag2 = ref(2)
const spy = jest.fn()
const Child = () => {
spy()
return 'child'
}
const App = {
setup() {
return () => [
flag1.value,
h(
Child,
{ n: flag2.value },
{
foo: () => 'foo',
$stable: true
}
)
]
}
}
render(h(App), nodeOps.createElement('div'))
expect(spy).toHaveBeenCalledTimes(1)
// parent re-render, props didn't change, slots are stable
// -> child should not update
flag1.value++
await nextTick()
expect(spy).toHaveBeenCalledTimes(1)
// parent re-render, props changed
// -> child should update
flag2.value++
await nextTick()
expect(spy).toHaveBeenCalledTimes(2)
})
})
test('emit', async () => {
let noMatchEmitResult: any
let singleEmitResult: any
let multiEmitResult: any
const Child = defineComponent({
setup(_, { emit }) {
noMatchEmitResult = emit('foo')
singleEmitResult = emit('bar')
multiEmitResult = emit('baz')
return () => h('div')
}
})
const App = {
setup() {
return () =>
h(Child, {
// emit triggering single handler
onBar: () => 1,
// emit triggering multiple handlers
onBaz: [() => Promise.resolve(2), () => Promise.resolve(3)]
})
}
}
render(h(App), nodeOps.createElement('div'))
// assert return values from emit
expect(noMatchEmitResult).toMatchObject([])
expect(singleEmitResult).toMatchObject([1])
expect(await Promise.all(multiEmitResult)).toMatchObject([2, 3])
})
// for v-model:foo-bar usage in DOM templates
test('emit update:xxx events should trigger kebab-case equivalent', () => {
const Child = defineComponent({
setup(_, { emit }) {
emit('update:fooBar', 1)
return () => h('div')
}
})
const handler = jest.fn()
const App = {
setup() {
return () =>
h(Child, {
'onUpdate:foo-bar': handler
})
}
}
render(h(App), nodeOps.createElement('div'))
expect(handler).toHaveBeenCalled()
})
})