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next.js/test/development/app-dir/hydration-error-count/hydration-error-count.test.ts
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first commit
2026-03-10 19:37:31 +03:30

403 lines
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TypeScript

import { nextTestSetup } from 'e2e-utils'
describe('hydration-error-count', () => {
const { next } = nextTestSetup({
files: __dirname,
})
it('should have correct hydration error count for bad nesting', async () => {
const browser = await next.browser('/bad-nesting')
if (process.env.__NEXT_CACHE_COMPONENTS) {
await expect(browser).toDisplayCollapsedRedbox(`
[
{
"code": "E394",
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
> <p>
> <p>
...
...
...",
"description": "In HTML, <p> cannot be a descendant of <p>.
This will cause a hydration error.",
"environmentLabel": null,
"label": "Console Error",
"source": "app/bad-nesting/page.tsx (6:7) @ Page
> 6 | <p>nest</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/bad-nesting/page.tsx (6:7)",
],
},
{
"description": "Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used:",
"environmentLabel": null,
"label": "Recoverable Error",
"source": "app/bad-nesting/page.tsx (6:7) @ Page
> 6 | <p>nest</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/bad-nesting/page.tsx (6:7)",
],
},
]
`)
} else {
await expect(browser).toDisplayCollapsedRedbox(`
[
{
"code": "E394",
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
> <p>
> <p>
...
...
...",
"description": "In HTML, <p> cannot be a descendant of <p>.
This will cause a hydration error.",
"environmentLabel": null,
"label": "Console Error",
"source": "app/bad-nesting/page.tsx (6:7) @ Page
> 6 | <p>nest</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/bad-nesting/page.tsx (6:7)",
],
},
{
"description": "Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used:",
"environmentLabel": null,
"label": "Recoverable Error",
"source": "app/bad-nesting/page.tsx (6:7) @ Page
> 6 | <p>nest</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/bad-nesting/page.tsx (6:7)",
],
},
]
`)
}
})
it('should have correct hydration error count for html diff', async () => {
const browser = await next.browser('/html-diff')
if (process.env.__NEXT_CACHE_COMPONENTS) {
await expect(browser).toDisplayCollapsedRedbox(`
{
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
<p>
+ client
- server
...
...
...",
"description": "Hydration failed because the server rendered text didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used:",
"environmentLabel": null,
"label": "Recoverable Error",
"source": "app/html-diff/page.tsx (4:10) @ Page
> 4 | return <p>{typeof window === 'undefined' ? 'server' : 'client'}</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/html-diff/page.tsx (4:10)",
],
}
`)
} else {
await expect(browser).toDisplayCollapsedRedbox(`
{
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
<p>
+ client
- server
...
...
...",
"description": "Hydration failed because the server rendered text didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used:",
"environmentLabel": null,
"label": "Recoverable Error",
"source": "app/html-diff/page.tsx (4:10) @ Page
> 4 | return <p>{typeof window === 'undefined' ? 'server' : 'client'}</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/html-diff/page.tsx (4:10)",
],
}
`)
}
})
it('should display correct hydration info in each hydration error view', async () => {
const browser = await next.browser('/two-issues')
if (process.env.__NEXT_CACHE_COMPONENTS) {
await expect(browser).toDisplayCollapsedRedbox(`
[
{
"code": "E394",
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
> <p className="client">
> <p>
...
...
...",
"description": "In HTML, <p> cannot be a descendant of <p>.
This will cause a hydration error.",
"environmentLabel": null,
"label": "Console Error",
"source": "app/two-issues/page.tsx (10:7) @ Page
> 10 | <p>nest</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/two-issues/page.tsx (10:7)",
],
},
{
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
<p
+ className="client"
- className="server"
>
...
...
...",
"description": "Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used:",
"environmentLabel": null,
"label": "Recoverable Error",
"source": "app/two-issues/page.tsx (10:7) @ Page
> 10 | <p>nest</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/two-issues/page.tsx (10:7)",
],
},
]
`)
} else {
await expect(browser).toDisplayCollapsedRedbox(`
[
{
"code": "E394",
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
> <p className="client">
> <p>
...
...
...",
"description": "In HTML, <p> cannot be a descendant of <p>.
This will cause a hydration error.",
"environmentLabel": null,
"label": "Console Error",
"source": "app/two-issues/page.tsx (10:7) @ Page
> 10 | <p>nest</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/two-issues/page.tsx (10:7)",
],
},
{
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
<p
+ className="client"
- className="server"
>
...
...
...",
"description": "Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used:",
"environmentLabel": null,
"label": "Recoverable Error",
"source": "app/two-issues/page.tsx (10:7) @ Page
> 10 | <p>nest</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/two-issues/page.tsx (10:7)",
],
},
]
`)
}
})
it('should display runtime error separately from hydration errors', async () => {
const browser = await next.browser('/hydration-with-runtime-errors')
await expect(browser).toDisplayRedbox(`
[
{
"code": "E394",
"componentStack": "...
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Next.js Internal Component>
<Page params={Promise} searchParams={Promise}>
> <p>
> <p>
...
...
...",
"description": "In HTML, <p> cannot be a descendant of <p>.
This will cause a hydration error.",
"environmentLabel": null,
"label": "Console Error",
"source": "app/hydration-with-runtime-errors/page.tsx (12:14) @ Page
> 12 | sneaky <p>very sneaky</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/hydration-with-runtime-errors/page.tsx (12:14)",
],
},
{
"description": "Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used:",
"environmentLabel": null,
"label": "Recoverable Error",
"source": "app/hydration-with-runtime-errors/page.tsx (12:14) @ Page
> 12 | sneaky <p>very sneaky</p>
| ^",
"stack": [
"p <anonymous>",
"Page app/hydration-with-runtime-errors/page.tsx (12:14)",
],
},
{
"description": "runtime error",
"environmentLabel": null,
"label": "Runtime Error",
"source": "app/hydration-with-runtime-errors/page.tsx (7:11) @ Page.useEffect
> 7 | throw new Error('runtime error')
| ^",
"stack": [
"Page.useEffect app/hydration-with-runtime-errors/page.tsx (7:11)",
],
},
]
`)
})
})