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test(rsc): test hydrateRoot(..., { formState }) #781

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Merged
hi-ogawa merged 2 commits into from
Aug 26, 2025
Merged

test(rsc): test hydrateRoot(..., { formState }) #781

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a36d91b
test(rsc): test `hydrateRoot(..., { formState })`
hi-ogawa Aug 26, 2025
507d7b4
test: skip firefox
hi-ogawa Aug 26, 2025
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36 changes: 36 additions & 0 deletions packages/plugin-rsc/e2e/basic.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -238,6 +238,42 @@ function defineTest(f: Fixture) {
await testUseActionState(page)
})

test('useActionState nojs to js', async ({ page, browserName }) => {
// firefox seems to cache html and route interception doesn't work
test.skip(browserName === 'firefox')

// this test fails without `formState` passed to `hydrateRoot(..., { formState })`

// intercept request to disable js
let js: boolean
await page.route(f.url(), async (route) => {
if (!js) {
await route.continue({ url: route.request().url() + '?__nojs' })
return
}
await route.continue()
})

// no js
js = false
await page.goto(f.url())
await expect(page.getByTestId('use-action-state')).toContainText(
'test-useActionState: 0',
)
await page.getByTestId('use-action-state').click()
await expect(page.getByTestId('use-action-state')).toContainText(
'test-useActionState: 1',
)

// with js (hydration)
js = true
await page.getByTestId('use-action-state').click()
await waitForHydration(page)
await expect(page.getByTestId('use-action-state')).toContainText(
'test-useActionState: 2', // this becomes "0" without formState
)
})

async function testUseActionState(page: Page) {
await expect(page.getByTestId('use-action-state')).toContainText(
'test-useActionState: 0',
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