Fix styled-components test for Turbopack (vercel#61496)

## What?

Fixes one of the styled-components tests. Somehow the test that checks
the warning shows up without the transform is not showing the warning
but the transform is also not enabled, so I've skipped the test as it's
not important for stable.

<!-- Thanks for opening a PR! Your contribution is much appreciated.
To make sure your PR is handled as smoothly as possible we request that
you follow the checklist sections below.
Choose the right checklist for the change(s) that you're making:

## For Contributors

### Improving Documentation

- Run `pnpm prettier-fix` to fix formatting issues before opening the
PR.
- Read the Docs Contribution Guide to ensure your contribution follows
the docs guidelines:
https://nextjs.org/docs/community/contribution-guide

### Adding or Updating Examples

- The "examples guidelines" are followed from our contributing doc
https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md
- Make sure the linting passes by running `pnpm build && pnpm lint`. See
https://github.com/vercel/next.js/blob/canary/contributing/repository/linting.md

### Fixing a bug

- Related issues linked using `fixes #number`
- Tests added. See:
https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md

### Adding a feature

- Implements an existing feature request or RFC. Make sure the feature
request has been accepted for implementation before opening a PR. (A
discussion must be opened, see
https://github.com/vercel/next.js/discussions/new?category=ideas)
- Related issues/discussions are linked using `fixes #number`
- e2e tests added
(https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs)
- Documentation added
- Telemetry added. In case of a feature if it's used or not.
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md


## For Maintainers

- Minimal description (aim for explaining to someone not on the team to
understand the PR)
- When linking to a Slack thread, you might want to share details of the
conclusion
- Link both the Linear (Fixes NEXT-xxx) and the GitHub issues
- Add review comments if necessary to explain to the reviewer the logic
behind a change

### What?

### Why?

### How?

Closes NEXT-
Fixes #

-->


Closes NEXT-2321

Author: timneutkens

test/development/basic/styled-components-disabled.test.ts

@@ -4,58 +4,59 @@ import { createNext, FileRef } from 'e2e-utils'
 import { NextInstance } from 'test/lib/next-modes/base'
 import { check, fetchViaHTTP } from 'next-test-utils'
 
-describe.each([
-  ['dev', false],
-  // TODO: re-enable when this is no longer flakey with turbo
-  // ['turbo', true],
-])('styled-components SWC transform', (_name, turbo) => {
-  let next: NextInstance
+// TODO: Somehow the warning doesn't show up with Turbopack, even though the transform is not enabled.
+;(process.env.TURBOPACK ? describe.skip : describe)(
+  'styled-components SWC transform',
+  () => {
+    let next: NextInstance
 
-  beforeAll(async () => {
-    next = await createNext({
-      turbo: !!turbo,
-      files: {
-        'next.config.js': new FileRef(
-          join(__dirname, 'styled-components-disabled/next.config.js')
-        ),
-        pages: new FileRef(join(__dirname, 'styled-components-disabled/pages')),
-      },
-      dependencies: {
-        'styled-components': '5.3.3',
-      },
+    beforeAll(async () => {
+      next = await createNext({
+        files: {
+          'next.config.js': new FileRef(
+            join(__dirname, 'styled-components-disabled/next.config.js')
+          ),
+          pages: new FileRef(
+            join(__dirname, 'styled-components-disabled/pages')
+          ),
+        },
+        dependencies: {
+          'styled-components': '5.3.3',
+        },
+      })
     })
-  })
-  afterAll(() => next.destroy())
+    afterAll(() => next.destroy())
 
-  async function matchLogs$(browser) {
-    let foundLog = false
+    async function matchLogs$(browser) {
+      let foundLog = false
 
-    const browserLogs = await browser.log('browser')
+      const browserLogs = await browser.log('browser')
 
-    browserLogs.forEach((log) => {
-      if (log.message.includes('Warning: Prop `%s` did not match.')) {
-        foundLog = true
-      }
-    })
-    return foundLog
-  }
-  it('should have hydration mismatch with styled-components transform disabled', async () => {
-    let browser
-    try {
-      browser = await webdriver(next.url, '/')
+      browserLogs.forEach((log) => {
+        if (log.message.includes('Warning: Prop `%s` did not match.')) {
+          foundLog = true
+        }
+      })
+      return foundLog
+    }
+    it('should have hydration mismatch with styled-components transform disabled', async () => {
+      let browser
+      try {
+        browser = await webdriver(next.url, '/')
 
-      // Compile /_error
-      await fetchViaHTTP(next.url, '/404')
+        // Compile /_error
+        await fetchViaHTTP(next.url, '/404')
 
-      await check(async () => {
-        await browser.refresh()
-        const foundLog = await matchLogs$(browser)
-        return foundLog ? 'success' : await browser.log('browser')
-      }, 'success')
-    } finally {
-      if (browser) {
-        await browser.close()
+        await check(async () => {
+          await browser.refresh()
+          const foundLog = await matchLogs$(browser)
+          return foundLog ? 'success' : await browser.log('browser')
+        }, 'success')
+      } finally {
+        if (browser) {
+          await browser.close()
+        }
       }
-    }
-  })
-})
+    })
+  }
+)

test/development/basic/styled-components.test.ts

@@ -0,0 +1,88 @@
+import webdriver from 'next-webdriver'
+import { createNextDescribe } from 'e2e-utils'
+import { fetchViaHTTP, renderViaHTTP } from 'next-test-utils'
+
+createNextDescribe(
+  'styled-components SWC transform',
+  {
+    files: __dirname,
+    dependencies: {
+      'styled-components': '5.3.3',
+    },
+  },
+  ({ next }) => {
+    async function matchLogs$(browser) {
+      let foundLog = false
+
+      const browserLogs = await browser.log('browser')
+
+      browserLogs.forEach((log) => {
+        if (log.message.includes('Warning: Prop `%s` did not match.')) {
+          foundLog = true
+        }
+      })
+      return foundLog
+    }
+
+    it('should not have hydration mismatch with styled-components transform enabled', async () => {
+      let browser
+      try {
+        browser = await webdriver(next.url, '/')
+
+        // Compile /_error
+        await fetchViaHTTP(next.url, '/404')
+
+        // Try 4 times to be sure there is no mismatch
+        expect(await matchLogs$(browser)).toBe(false)
+        await browser.refresh()
+        expect(await matchLogs$(browser)).toBe(false)
+        await browser.refresh()
+        expect(await matchLogs$(browser)).toBe(false)
+        await browser.refresh()
+        expect(await matchLogs$(browser)).toBe(false)
+      } finally {
+        if (browser) {
+          await browser.close()
+        }
+      }
+    })
+
+    it('should render the page with correct styles', async () => {
+      const browser = await webdriver(next.url, '/')
+
+      expect(
+        await browser.eval(
+          `window.getComputedStyle(document.querySelector('#btn')).color`
+        )
+      ).toBe('rgb(255, 255, 255)')
+      expect(
+        await browser.eval(
+          `window.getComputedStyle(document.querySelector('#wrap-div')).color`
+        )
+      ).toBe('rgb(0, 0, 0)')
+    })
+
+    it('should enable the display name transform by default', async () => {
+      // make sure the index chunk gets generated
+      const html = await next.render('/')
+      expect(html).toContain('pages__Button')
+    })
+
+    it('should contain styles in initial HTML', async () => {
+      const html = await renderViaHTTP(next.url, '/')
+      expect(html).toContain('background:transparent')
+      expect(html).toContain('color:white')
+    })
+
+    it('should only render once on the server per request', async () => {
+      const outputs = []
+      next.on('stdout', (args) => {
+        outputs.push(args)
+      })
+      await renderViaHTTP(next.url, '/')
+      expect(
+        outputs.filter((output) => output.trim() === '__render__').length
+      ).toBe(1)
+    })
+  }
+)