test: test ssr

Author: hi-ogawa

playground/rolldown-dev-ssr/__tests__/basic.spec.ts

@@ -0,0 +1,26 @@
+import { expect, test } from 'vitest'
+import { editFile, isBuild, page, viteTestUrl } from '../../test-utils'
+
+test('basic', async () => {
+  await page.getByText('hydrated: true').click()
+  await page.getByRole('button', { name: 'Count: 0' }).click()
+  await page.getByRole('button', { name: 'Count: 1' }).click()
+  await page.getByText('[virtual] test:virtual:ok').click()
+
+  const res = await page.request.get(viteTestUrl)
+  expect(await res.text()).toContain('hydrated: <!-- -->false')
+})
+
+test.runIf(!isBuild)('hmr', async () => {
+  await page.goto(viteTestUrl)
+  await page.getByRole('button', { name: 'Count: 0' }).click()
+
+  editFile('./src/app.tsx', (s) => s.replace('Count:', 'Count-x:'))
+  await page.getByRole('button', { name: 'Count-x: 1' }).click()
+
+  editFile('./src/app.tsx', (s) => s.replace('Count-x:', 'Count-x-y:'))
+  await page.getByRole('button', { name: 'Count-x-y: 2' }).click()
+
+  const res = await page.request.get(viteTestUrl)
+  expect(await res.text()).toContain('Count-x-y')
+})

playground/rolldown-dev-ssr/src/app.tsx

@@ -9,7 +9,7 @@ export function App() {
       <h1>Rolldown SSR</h1>
       <Hydrated />
       <button onClick={() => setCount((c) => c + 1)}>Count: {count}</button>
-      <pre>[virtual:test] {virtualTest}</pre>
+      <pre>[virtual] {virtualTest}</pre>
     </div>
   )
 }

playground/rolldown-dev-ssr/vite.config.ts

@@ -62,7 +62,7 @@ export default defineConfig({
         handler(id, _options) {
           if (id === '\0virtual:test') {
             debug('[load]', this.environment?.name)
-            return `export default "virtual-ok"`
+            return `export default "test:virtual:ok"`
           }
         },
       },