cloudflare/vinext
Publicmirrored from https://github.com/cloudflare/vinextAvailable
tests/e2e/cloudflare-workers/hydration.spec.ts
54lines · modecode
| 1 | import { test, expect } from "../fixtures"; |
| 2 | |
| 3 | const BASE = "http://localhost:4176"; |
| 4 | |
| 5 | test.describe("Cloudflare Workers Hydration", () => { |
| 6 | // The consoleErrors fixture automatically fails tests if any console errors occur. |
| 7 | // This catches React hydration mismatches (error #418), runtime errors, etc. |
| 8 | |
| 9 | test("client component hydrates and becomes interactive", async ({ |
| 10 | page, |
| 11 | consoleErrors, |
| 12 | }) => { |
| 13 | await page.goto(`${BASE}/`); |
| 14 | |
| 15 | // SSR should show initial count |
| 16 | await expect(page.locator('[data-testid="count"]')).toHaveText("Count: 0"); |
| 17 | |
| 18 | // After hydration, clicking should work |
| 19 | await page.click('[data-testid="increment"]'); |
| 20 | await expect(page.locator('[data-testid="count"]')).toHaveText("Count: 1"); |
| 21 | |
| 22 | await page.click('[data-testid="increment"]'); |
| 23 | await expect(page.locator('[data-testid="count"]')).toHaveText("Count: 2"); |
| 24 | |
| 25 | void consoleErrors; |
| 26 | }); |
| 27 | |
| 28 | test("page with timestamp hydrates without mismatch", async ({ |
| 29 | page, |
| 30 | consoleErrors, |
| 31 | }) => { |
| 32 | // This test specifically verifies the fix for GitHub issue #61. |
| 33 | // The home page has a timestamp that would cause hydration mismatch |
| 34 | // if the browser fetched a new RSC payload instead of using embedded data. |
| 35 | await page.goto(`${BASE}/`); |
| 36 | |
| 37 | // Wait for the client JS bundle to load and hydrate |
| 38 | await page.waitForFunction( |
| 39 | () => document.querySelector('[data-testid="increment"]') !== null, |
| 40 | ); |
| 41 | |
| 42 | // Verify hydration completes and component becomes interactive |
| 43 | await page.click('[data-testid="increment"]'); |
| 44 | await expect(page.locator('[data-testid="count"]')).toHaveText("Count: 1"); |
| 45 | |
| 46 | // The timestamp element should exist and have content |
| 47 | await expect(page.locator('[data-testid="timestamp"]')).toContainText( |
| 48 | "Rendered at:", |
| 49 | ); |
| 50 | |
| 51 | // consoleErrors fixture will fail this test if any hydration errors occurred |
| 52 | void consoleErrors; |
| 53 | }); |
| 54 | }); |
| 55 | |