| import { RuleTester as ESLintTesterV8 } from 'eslint-v8' | |
| import { RuleTester as ESLintTesterV9 } from 'eslint' | |
| import { rules } from '@next/eslint-plugin-next' | |
| const NextESLintRule = rules['no-head-element'] | |
| const message = | |
| 'Do not use `<head>` element. Use `<Head />` from `next/head` instead. See: https://nextjs.org/docs/messages/no-head-element' | |
| const tests = { | |
| valid: [ | |
| { | |
| code: `import Head from 'next/head'; | |
| export class MyComponent { | |
| render() { | |
| return ( | |
| <div> | |
| <Head> | |
| <title>My page title</title> | |
| </Head> | |
| </div> | |
| ); | |
| } | |
| } | |
| `, | |
| filename: 'pages/index.js', | |
| }, | |
| { | |
| code: `import Head from 'next/head'; | |
| export class MyComponent { | |
| render() { | |
| return ( | |
| <div> | |
| <Head> | |
| <title>My page title</title> | |
| </Head> | |
| </div> | |
| ); | |
| } | |
| } | |
| `, | |
| filename: 'pages/index.tsx', | |
| }, | |
| { | |
| code: ` | |
| export default function Layout({ children }) { | |
| return ( | |
| <html> | |
| <head> | |
| <title>layout</title> | |
| </head> | |
| <body>{children}</body> | |
| </html> | |
| ); | |
| } | |
| `, | |
| filename: './app/layout.js', | |
| }, | |
| ], | |
| invalid: [ | |
| { | |
| code: ` | |
| export class MyComponent { | |
| render() { | |
| return ( | |
| <div> | |
| <head> | |
| <title>My page title</title> | |
| </head> | |
| </div> | |
| ); | |
| } | |
| }`, | |
| filename: './pages/index.js', | |
| errors: [ | |
| { | |
| message, | |
| type: 'JSXOpeningElement', | |
| }, | |
| ], | |
| }, | |
| { | |
| code: `import Head from 'next/head'; | |
| export class MyComponent { | |
| render() { | |
| return ( | |
| <div> | |
| <head> | |
| <title>My page title</title> | |
| </head> | |
| <Head> | |
| <title>My page title</title> | |
| </Head> | |
| </div> | |
| ); | |
| } | |
| }`, | |
| filename: 'pages/index.ts', | |
| errors: [ | |
| { | |
| message, | |
| type: 'JSXOpeningElement', | |
| }, | |
| ], | |
| }, | |
| ], | |
| } | |
| describe('no-head-element', () => { | |
| new ESLintTesterV8({ | |
| parserOptions: { | |
| ecmaVersion: 2018, | |
| sourceType: 'module', | |
| ecmaFeatures: { | |
| modules: true, | |
| jsx: true, | |
| }, | |
| }, | |
| }).run('eslint-v8', NextESLintRule, tests) | |
| new ESLintTesterV9({ | |
| languageOptions: { | |
| ecmaVersion: 2018, | |
| sourceType: 'module', | |
| parserOptions: { | |
| ecmaFeatures: { | |
| modules: true, | |
| jsx: true, | |
| }, | |
| }, | |
| }, | |
| }).run('eslint-v9', NextESLintRule, tests) | |
| }) | |