rsnext/test/unit/eslint-plugin-next/no-duplicate-head.test.ts
Michael Novotny 5211ac5cae
Adds consistency to ESLint rules. (#34335)
* Adds consistency to ESLint rules.

* Fixes lint errors.

* Fixes manifest.

* Adds missing title.

* Fixes copy / paste error.

Co-authored-by: Lee Robinson <me@leerob.io>

* Update errors/no-script-in-document.md

Co-authored-by: Lee Robinson <me@leerob.io>

* Update errors/no-sync-scripts.md

Co-authored-by: Lee Robinson <me@leerob.io>

* Updates a couple of rule descriptions.

* Adds redirects.

* Fixes unit tests.

* Removes duplicated section.

* Updates `no-before-interactive-script-outside-document` description.

* Fixes lint.

* Fixes integration tests.

* Adds description to `no-before-interactive-script-outside-document` documentation.

* Removes `link-passhref` from rules list.

* Updates remaining `pages/_middleware.js` references.

* Adds consistancy to messaging in new `no-styled-jsx-in-document` rule.

* Apply suggestions from code review

* Apply suggestions from code review

Co-authored-by: Lee Robinson <me@leerob.io>
Co-authored-by: Tim Neutkens <tim@timneutkens.nl>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
2022-06-13 21:17:42 -05:00

140 lines
3.3 KiB
TypeScript

import rule from '@next/eslint-plugin-next/lib/rules/no-duplicate-head'
import { RuleTester } from 'eslint'
;(RuleTester as any).setDefaultConfig({
parserOptions: {
ecmaVersion: 2018,
sourceType: 'module',
ecmaFeatures: {
modules: true,
jsx: true,
},
},
})
const ruleTester = new RuleTester()
ruleTester.run('no-duplicate-head', rule, {
valid: [
{
code: `import Document, { Html, Head, Main, NextScript } from 'next/document'
class MyDocument extends Document {
static async getInitialProps(ctx) {
//...
}
render() {
return (
<Html>
<Head/>
</Html>
)
}
}
export default MyDocument
`,
filename: 'pages/_document.js',
},
{
code: `import Document, { Html, Head, Main, NextScript } from 'next/document'
class MyDocument extends Document {
render() {
return (
<Html>
<Head>
<meta charSet="utf-8" />
<link
href="https://fonts.googleapis.com/css2?family=Sarabun:ital,wght@0,400;0,700;1,400;1,700&display=swap"
rel="stylesheet"
/>
</Head>
</Html>
)
}
}
export default MyDocument
`,
filename: 'pages/_document.tsx',
},
],
invalid: [
{
code: `
import Document, { Html, Main, NextScript } from 'next/document'
import Head from 'next/head'
class MyDocument extends Document {
render() {
return (
<Html>
<Head />
<Head />
<Head />
</Html>
)
}
}
export default MyDocument
`,
filename: 'pages/_document.js',
errors: [
{
message:
'Do not include multiple instances of `<Head/>`. See: https://nextjs.org/docs/messages/no-duplicate-head',
type: 'JSXElement',
},
{
message:
'Do not include multiple instances of `<Head/>`. See: https://nextjs.org/docs/messages/no-duplicate-head',
type: 'JSXElement',
},
],
},
{
code: `
import Document, { Html, Main, NextScript } from 'next/document'
import Head from 'next/head'
class MyDocument extends Document {
render() {
return (
<Html>
<Head>
<meta charSet="utf-8" />
<link
href="https://fonts.googleapis.com/css2?family=Sarabun:ital,wght@0,400;0,700;1,400;1,700&display=swap"
rel="stylesheet"
/>
</Head>
<body>
<Main />
<NextScript />
</body>
<Head>
<script
dangerouslySetInnerHTML={{
__html: '',
}}
/>
</Head>
</Html>
)
}
}
export default MyDocument
`,
filename: 'pages/_document.page.tsx',
errors: [
{
message:
'Do not include multiple instances of `<Head/>`. See: https://nextjs.org/docs/messages/no-duplicate-head',
type: 'JSXElement',
},
],
},
],
})