forked from vuejs/core
/
vOn.spec.ts
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/
vOn.spec.ts
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import {
parse,
transform,
CompilerOptions,
ElementNode,
ObjectExpression,
CallExpression,
NodeTypes
} from '@vue/compiler-core'
import { transformOn } from '../../src/transforms/vOn'
import { transformElement } from '../../../compiler-core/src/transforms/transformElement'
import { transformExpression } from '../../../compiler-core/src/transforms/transformExpression'
function parseWithVOn(
template: string,
options: CompilerOptions = {}
): ElementNode {
const ast = parse(template)
transform(ast, {
nodeTransforms: [transformExpression, transformElement],
directiveTransforms: {
on: transformOn
},
...options
})
return ast.children[0] as ElementNode
}
describe('compiler-dom: transform v-on', () => {
it('should support .stop modifier', () => {
const node = parseWithVOn(`<div @click.stop="test"/>`, {
prefixIdentifiers: true
})
const props = (node.codegenNode as CallExpression)
.arguments[1] as ObjectExpression
expect(props.properties[0].value).toMatchObject({
type: NodeTypes.COMPOUND_EXPRESSION,
children: [
`$event => {`,
`$event.stopPropagation();`,
'(',
{
content: '_ctx.test',
isStatic: false,
type: NodeTypes.SIMPLE_EXPRESSION,
loc: expect.anything()
},
')',
'($event)',
'}'
]
})
})
it('should support muliple modifiers, and ignore unknown modifier', () => {
const node = parseWithVOn(`<div @click.stop.prevent.gibberish="test"/>`, {
prefixIdentifiers: true
})
const props = (node.codegenNode as CallExpression)
.arguments[1] as ObjectExpression
expect(props.properties[0].value).toMatchObject({
type: NodeTypes.COMPOUND_EXPRESSION,
children: [
`$event => {`,
`$event.stopPropagation();`,
`$event.preventDefault();`,
'', // ignored modifier "gibberish"
'(',
{
content: '_ctx.test',
isStatic: false,
type: NodeTypes.SIMPLE_EXPRESSION,
loc: expect.anything()
},
')',
'($event)',
'}'
]
})
})
})