import { nextTestSetup } from 'e2e-utils' import { assertNoRedbox } from '../../../lib/next-test-utils' describe('use-cache-errors', () => { const { next } = nextTestSetup({ files: __dirname, }) const isRspack = Boolean(process.env.NEXT_RSPACK) it('should not show a false-positive compiler error about a misplaced "use cache" directive', async () => { // This is a regression test to ensure that an injected React Refresh // statement (`var _s = __turbopack_context__.k.signature`) does not // interfere with our "use cache" directive misplacement detection. const browser = await next.browser('/') await assertNoRedbox(browser) }) it('should show a runtime error when calling the incorrectly used cache function', async () => { const browser = await next.browser('/') await browser.elementById('action-button').click() if (isRspack) { // TODO: the source is missing and the stack leaks rspack internals await expect(browser).toDisplayRedbox(` { "description": "Attempted to call useStuff() from the server but useStuff is on the client. It's not possible to invoke a client function from the server, it can only be rendered as a Component or passed to props of a Client Component.", "environmentLabel": "Cache", "label": "Runtime Error", "source": null, "stack": [ "", "useCachedStuff about:/Cache/webpack-internal:///(action-browser)/app/module-with-use-cache.ts (25:68)", "Page ./app/page.tsx", ], } `) } else { await expect(browser).toDisplayRedbox(` { "description": "Attempted to call useStuff() from the server but useStuff is on the client. It's not possible to invoke a client function from the server, it can only be rendered as a Component or passed to props of a Client Component.", "environmentLabel": "Cache", "label": "Runtime Error", "source": "app/module-with-use-cache.ts (16:18) @ useCachedStuff > 16 | return useStuff() | ^", "stack": [ "useCachedStuff app/module-with-use-cache.ts (16:18)", "Page app/page.tsx (22:10)", ], } `) } }) })