vue3-yuanma/packages/runtime-core/__tests__/componentProps.spec.ts

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import {
ComponentInternalInstance,
getCurrentInstance,
render,
h,
nodeOps,
FunctionalComponent,
defineComponent,
ref
} from '@vue/runtime-test'
import { render as domRender, nextTick } from 'vue'
import { mockWarn } from '@vue/shared'
describe('component props', () => {
mockWarn()
test('stateful', () => {
let props: any
let attrs: any
let proxy: any
const Comp = defineComponent({
props: ['fooBar'],
render() {
props = this.$props
attrs = this.$attrs
proxy = this
}
})
const root = nodeOps.createElement('div')
render(h(Comp, { fooBar: 1, bar: 2 }), root)
expect(proxy.fooBar).toBe(1)
expect(props).toEqual({ fooBar: 1 })
expect(attrs).toEqual({ bar: 2 })
// test passing kebab-case and resolving to camelCase
render(h(Comp, { 'foo-bar': 2, bar: 3, baz: 4 }), root)
expect(proxy.fooBar).toBe(2)
expect(props).toEqual({ fooBar: 2 })
expect(attrs).toEqual({ bar: 3, baz: 4 })
// test updating kebab-case should not delete it (#955)
render(h(Comp, { 'foo-bar': 3, bar: 3, baz: 4 }), root)
expect(proxy.fooBar).toBe(3)
expect(props).toEqual({ fooBar: 3 })
expect(attrs).toEqual({ bar: 3, baz: 4 })
render(h(Comp, { qux: 5 }), root)
expect(proxy.fooBar).toBeUndefined()
expect(props).toEqual({})
expect(attrs).toEqual({ qux: 5 })
})
test('stateful with setup', () => {
let props: any
let attrs: any
const Comp = defineComponent({
props: ['foo'],
setup(_props, { attrs: _attrs }) {
return () => {
props = _props
attrs = _attrs
}
}
})
const root = nodeOps.createElement('div')
render(h(Comp, { foo: 1, bar: 2 }), root)
expect(props).toEqual({ foo: 1 })
expect(attrs).toEqual({ bar: 2 })
render(h(Comp, { foo: 2, bar: 3, baz: 4 }), root)
expect(props).toEqual({ foo: 2 })
expect(attrs).toEqual({ bar: 3, baz: 4 })
render(h(Comp, { qux: 5 }), root)
expect(props).toEqual({})
expect(attrs).toEqual({ qux: 5 })
})
test('functional with declaration', () => {
let props: any
let attrs: any
const Comp: FunctionalComponent = (_props, { attrs: _attrs }) => {
props = _props
attrs = _attrs
}
Comp.props = ['foo']
const root = nodeOps.createElement('div')
render(h(Comp, { foo: 1, bar: 2 }), root)
expect(props).toEqual({ foo: 1 })
expect(attrs).toEqual({ bar: 2 })
render(h(Comp, { foo: 2, bar: 3, baz: 4 }), root)
expect(props).toEqual({ foo: 2 })
expect(attrs).toEqual({ bar: 3, baz: 4 })
render(h(Comp, { qux: 5 }), root)
expect(props).toEqual({})
expect(attrs).toEqual({ qux: 5 })
})
test('functional without declaration', () => {
let props: any
let attrs: any
const Comp: FunctionalComponent = (_props, { attrs: _attrs }) => {
props = _props
attrs = _attrs
}
const root = nodeOps.createElement('div')
render(h(Comp, { foo: 1 }), root)
expect(props).toEqual({ foo: 1 })
expect(attrs).toEqual({ foo: 1 })
expect(props).toBe(attrs)
render(h(Comp, { bar: 2 }), root)
expect(props).toEqual({ bar: 2 })
expect(attrs).toEqual({ bar: 2 })
expect(props).toBe(attrs)
})
test('boolean casting', () => {
let proxy: any
const Comp = {
props: {
foo: Boolean,
bar: Boolean,
baz: Boolean,
qux: Boolean
},
render() {
proxy = this
}
}
render(
h(Comp, {
// absent should cast to false
bar: '', // empty string should cast to true
baz: 'baz', // same string should cast to true
qux: 'ok' // other values should be left in-tact (but raise warning)
}),
nodeOps.createElement('div')
)
expect(proxy.foo).toBe(false)
expect(proxy.bar).toBe(true)
expect(proxy.baz).toBe(true)
expect(proxy.qux).toBe('ok')
expect('type check failed for prop "qux"').toHaveBeenWarned()
})
test('default value', () => {
let proxy: any
const Comp = {
props: {
foo: {
default: 1
},
bar: {
default: () => ({ a: 1 })
}
},
render() {
proxy = this
}
}
const root = nodeOps.createElement('div')
render(h(Comp, { foo: 2 }), root)
expect(proxy.foo).toBe(2)
expect(proxy.bar).toEqual({ a: 1 })
render(h(Comp, { foo: undefined, bar: { b: 2 } }), root)
expect(proxy.foo).toBe(1)
expect(proxy.bar).toEqual({ b: 2 })
})
test('optimized props updates', async () => {
const Child = defineComponent({
props: ['foo'],
template: `<div>{{ foo }}</div>`
})
const foo = ref(1)
const id = ref('a')
const Comp = defineComponent({
setup() {
return {
foo,
id
}
},
components: { Child },
template: `<Child :foo="foo" :id="id"/>`
})
// Note this one is using the main Vue render so it can compile template
// on the fly
const root = document.createElement('div')
domRender(h(Comp), root)
expect(root.innerHTML).toBe('<div id="a">1</div>')
foo.value++
await nextTick()
expect(root.innerHTML).toBe('<div id="a">2</div>')
id.value = 'b'
await nextTick()
expect(root.innerHTML).toBe('<div id="b">2</div>')
})
test('warn props mutation', () => {
let instance: ComponentInternalInstance
let setupProps: any
const Comp = {
props: ['foo'],
setup(props: any) {
instance = getCurrentInstance()!
setupProps = props
return () => null
}
}
render(h(Comp, { foo: 1 }), nodeOps.createElement('div'))
expect(setupProps.foo).toBe(1)
expect(instance!.props.foo).toBe(1)
setupProps.foo = 2
expect(`Set operation on key "foo" failed`).toHaveBeenWarned()
expect(() => {
;(instance!.proxy as any).foo = 2
}).toThrow(TypeError)
expect(`Attempting to mutate prop "foo"`).toHaveBeenWarned()
})
})