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comma-dangle.js
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comma-dangle.js
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/**
* @author Yosuke Ota
*/
'use strict'
const RuleTester = require('eslint').RuleTester
const rule = require('../../../lib/rules/comma-dangle')
const tester = new RuleTester({
parser: require.resolve('vue-eslint-parser'),
parserOptions: { ecmaVersion: 2018 }
})
tester.run('comma-dangle', rule, {
valid: [
`<template>
<button @click="() => fn([a, b])" ></button>
</template>`,
{
code: `
<template>
<CustomButton @click="($event) => fn()" />
</template>`,
options: [{
'functions': 'never'
}]
},
{
code: `
<template>
<button @click="() => fn([a, b, ])" ></button>
</template>`,
options: [{
'arrays': 'ignore'
}]
}
],
invalid: [
{
code: `
<template>
<button @click="() => fn([a, b,])" ></button>
</template>`,
output: `
<template>
<button @click="() => fn([a, b])" ></button>
</template>`,
errors: [
{
message: 'Unexpected trailing comma.',
line: 3
}
]
},
{
code: `
<template>
<CustomButton @click="($event, ) => fn()" />
</template>`,
options: [{
'functions': 'never'
}],
output: `
<template>
<CustomButton @click="($event ) => fn()" />
</template>`,
errors: [
{
message: 'Unexpected trailing comma.',
line: 3
}
]
},
{
code: `
<template>
<button @click="() => {
fn([a, b, ])
fn([
a,
b
])
}"></button>
</template>`,
options: ['always-multiline'],
output: `
<template>
<button @click="() => {
fn([a, b ])
fn([
a,
b,
])
}"></button>
</template>`,
errors: [
{
message: 'Unexpected trailing comma.',
line: 4
},
{
message: 'Missing trailing comma.',
line: 7
}
]
}
]
})