test(bundled-dev): accept a rolldown dev runtime with no helper imports

packages/vite/src/node/__tests__/plugins/clientInjections.spec.ts

@@ -2,17 +2,17 @@ import path from 'node:path'
 import { expect, test } from 'vitest'
 import { getRolldownDevRuntimeFiles } from '../../plugins/clientInjections'
 
-// The runtime entry imports its helper file with a relative path. Catch a rolldown layout
-// change here, instead of as a 404 in the browser.
+// Catch a rolldown layout change here, instead of as a 404 in the browser. The runtime may
+// be one file with no imports, or an entry that imports helper files with relative paths.
 test('serves every file the rolldown dev runtime imports', () => {
   const files = getRolldownDevRuntimeFiles()
-  let checked = 0
+  expect(files.get('@rolldown/experimental-runtime.mjs')).toContain(
+    'DevRuntime',
+  )
   for (const [urlPath, source] of files) {
     for (const match of source.matchAll(/\bfrom\s*['"](\.\.?\/[^'"]+)['"]/g)) {
       const imported = path.posix.join(path.posix.dirname(urlPath), match[1])
       expect(files.has(imported), `${urlPath} imports ${match[1]}`).toBe(true)
-      checked++
     }
   }
-  expect(checked).toBeGreaterThan(0)
 })

playground/hmr-full-bundle-mode/__tests__/hmr-full-bundle-mode.spec.ts

@@ -48,7 +48,7 @@ if (isBuild) {
     expect(await client.text()).toContain(`from "${runtimeUrl.pathname}"`)
     const runtime = await page.request.get(runtimeUrl.href)
     expect(runtime.status()).toBe(200)
-    expect(await runtime.text()).toContain('class DevRuntime')
+    expect(await runtime.text()).toContain('DevRuntime')
     const loaded: string[] = await page.evaluate(() =>
       performance.getEntriesByType('resource').map((entry) => entry.name),
     )