vue3-yuanma/packages/compiler-core/__tests__/scopeId.spec.ts

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import { baseCompile } from '../src/compile'
import { PUSH_SCOPE_ID, POP_SCOPE_ID } from '../src/runtimeHelpers'
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import { PatchFlags } from '@vue/shared'
import { genFlagText } from './testUtils'
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/**
* Ensure all slot functions are wrapped with _withCtx
* which sets the currentRenderingInstance and currentScopeId when rendering
* the slot.
*/
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describe('scopeId compiler support', () => {
test('should only work in module mode', () => {
expect(() => {
baseCompile(``, { scopeId: 'test' })
}).toThrow(`"scopeId" option is only supported in module mode`)
})
test('should wrap default slot', () => {
const { code } = baseCompile(`<Child><div/></Child>`, {
mode: 'module',
scopeId: 'test'
})
expect(code).toMatch(`default: _withId(() => [`)
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expect(code).toMatchSnapshot()
})
test('should wrap named slots', () => {
const { code } = baseCompile(
`<Child>
<template #foo="{ msg }">{{ msg }}</template>
<template #bar><div/></template>
</Child>
`,
{
mode: 'module',
scopeId: 'test'
}
)
expect(code).toMatch(`foo: _withId(({ msg }) => [`)
expect(code).toMatch(`bar: _withId(() => [`)
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expect(code).toMatchSnapshot()
})
test('should wrap dynamic slots', () => {
const { code } = baseCompile(
`<Child>
<template #foo v-if="ok"><div/></template>
<template v-for="i in list" #[i]><div/></template>
</Child>
`,
{
mode: 'module',
scopeId: 'test'
}
)
expect(code).toMatch(/name: "foo",\s+fn: _withId\(/)
expect(code).toMatch(/name: i,\s+fn: _withId\(/)
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expect(code).toMatchSnapshot()
})
test('should push scopeId for hoisted nodes', () => {
const { ast, code } = baseCompile(
`<div><div>hello</div>{{ foo }}<div>world</div></div>`,
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{
mode: 'module',
scopeId: 'test',
hoistStatic: true
}
)
expect(ast.helpers).toContain(PUSH_SCOPE_ID)
expect(ast.helpers).toContain(POP_SCOPE_ID)
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expect(ast.hoists.length).toBe(2)
expect(code).toMatch(
[
`_pushScopeId("test")`,
`const _hoisted_1 = /*#__PURE__*/_createElementVNode("div", null, "hello", ${genFlagText(
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PatchFlags.HOISTED
)})`,
`const _hoisted_2 = /*#__PURE__*/_createElementVNode("div", null, "world", ${genFlagText(
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PatchFlags.HOISTED
)})`,
`_popScopeId()`
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].join('\n')
)
expect(code).toMatchSnapshot()
})
})