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import { RuleTester as ESLintTesterV8 } from 'eslint-v8'
import { RuleTester as ESLintTesterV9 } from 'eslint'
import { rules } from '@next/eslint-plugin-next'
const NextESLintRule = rules['google-font-preconnect']
const tests = {
valid: [
`export const Test = () => (
<div>
<link rel="preconnect" href="https://fonts.gstatic.com"/>
<link
href={process.env.NEXT_PUBLIC_CANONICAL_URL}
rel="canonical"
/>
<link
href={new URL("../public/favicon.ico", import.meta.url).toString()}
rel="icon"
/>
</div>
)
`,
],
invalid: [
{
code: `
export const Test = () => (
<div>
<link href="https://fonts.gstatic.com"/>
</div>
)
`,
errors: [
{
message:
'`rel="preconnect"` is missing from Google Font. See: https://nextjs.org/docs/messages/google-font-preconnect',
type: 'JSXOpeningElement',
},
],
},
{
code: `
export const Test = () => (
<div>
<link rel="preload" href="https://fonts.gstatic.com"/>
</div>
)
`,
errors: [
{
message:
'`rel="preconnect"` is missing from Google Font. See: https://nextjs.org/docs/messages/google-font-preconnect',
type: 'JSXOpeningElement',
},
],
},
],
}
describe('google-font-preconnect', () => {
new ESLintTesterV8({
parserOptions: {
ecmaVersion: 2020,
sourceType: 'module',
ecmaFeatures: {
modules: true,
jsx: true,
},
},
}).run('eslint-v8', NextESLintRule, tests)
new ESLintTesterV9({
languageOptions: {
ecmaVersion: 2020,
sourceType: 'module',
parserOptions: {
ecmaFeatures: {
modules: true,
jsx: true,
},
},
},
}).run('eslint-v9', NextESLintRule, tests)
})
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