test(nextjs): Run nextjs-16-tunnel on Cloudflare

nextjs-16-tunnel gets an optional Cloudflare variant that builds with
`opennextjs-cloudflare` and wraps the Worker in `worker.ts` with
`withSentry` from `@sentry/nextjs/cloudflare`. The tunnel route tests then
also run on Workers.

The Worker sends its spans to the proxy server through `tunnel`, so the
check that tunnel requests create no middleware spans sees the spans of the
Worker. Without the tunnel route handling of `withSentry`, a tunnel request
is sampled and this check fails.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: JPeer264

dev-packages/e2e-tests/test-applications/nextjs-16-tunnel/open-next.config.ts

@@ -0,0 +1,3 @@
+import { defineCloudflareConfig } from '@opennextjs/cloudflare';
+
+export default defineCloudflareConfig();

dev-packages/e2e-tests/test-applications/nextjs-16-tunnel/package.json

@@ -20,11 +20,14 @@
     "test:build-latest-webpack": "pnpm install && pnpm add next@latest && pnpm build-webpack",
     "test:build-canary-webpack": "pnpm install && pnpm add next@canary && pnpm build-webpack",
     "test:assert": "pnpm test:prod && pnpm test:dev",
-    "test:assert-webpack": "pnpm test:prod && pnpm test:dev-webpack"
+    "test:assert-webpack": "pnpm test:prod && pnpm test:dev-webpack",
+    "test:build:cloudflare": "pnpm install && _SENTRY_TUNNEL_DESTINATION_OVERRIDE=http://localhost:3031/ opennextjs-cloudflare build",
+    "start:cloudflare": "opennextjs-cloudflare preview"
   },
   "dependencies": {
-    "@sentry/nextjs": "file:../../packed/sentry-nextjs-packed.tgz",
+    "@opennextjs/cloudflare": "^1.14.9",
     "@sentry/core": "file:../../packed/sentry-core-packed.tgz",
+    "@sentry/nextjs": "file:../../packed/sentry-nextjs-packed.tgz",
     "ai": "^3.0.0",
     "import-in-the-middle": "^1",
     "next": "16.2.11",
@@ -41,7 +44,8 @@
     "@types/react-dom": "^19",
     "eslint": "^9",
     "eslint-config-next": "^16",
-    "typescript": "^5"
+    "typescript": "^5",
+    "wrangler": "^4.61.0"
   },
   "volta": {
     "extends": "../../package.json"
@@ -58,6 +62,14 @@
         "label": "nextjs-16-tunnel (turbopack)",
         "assert-command": "pnpm test:assert"
       }
+    ],
+    "optionalVariants": [
+      {
+        "runtime": "cloudflare",
+        "build-command": "pnpm test:build:cloudflare",
+        "assert-command": "pnpm test:prod",
+        "label": "nextjs-16-tunnel (cloudflare)"
+      }
     ]
   }
 }

dev-packages/e2e-tests/test-applications/nextjs-16-tunnel/playwright.config.mjs

@@ -1,4 +1,4 @@
-import { getPlaywrightConfig } from '@sentry-internal/test-utils';
+import { getPlaywrightConfig, getRuntime } from '@sentry-internal/test-utils';
 const testEnv = process.env.TEST_ENV;
 
 if (!testEnv) {
@@ -15,7 +15,7 @@ const getStartCommand = () => {
   }
 
   if (testEnv === 'production') {
-    return 'pnpm next start -p 3030';
+    return getRuntime() === 'cloudflare' ? 'pnpm start:cloudflare --port 3030' : 'pnpm next start -p 3030';
   }
 
   throw new Error(`Unknown test env: ${testEnv}`);

dev-packages/e2e-tests/test-applications/nextjs-16-tunnel/worker.ts

@@ -0,0 +1,14 @@
+import * as Sentry from '@sentry/nextjs/cloudflare';
+// @ts-ignore the file exists only after `opennextjs-cloudflare build`
+import handler from './.open-next/worker.js';
+
+export default Sentry.withSentry(
+  () => ({
+    environment: 'qa', // dynamic sampling bias to keep transactions
+    dsn: 'https://public@o12345.ingest.us.sentry.io/67890',
+    // Sends the server spans to the proxy server, so the tests see whether a tunnel request was sampled.
+    tunnel: 'http://localhost:3031/',
+    tracesSampleRate: 1.0,
+  }),
+  handler,
+);

dev-packages/e2e-tests/test-applications/nextjs-16-tunnel/wrangler.jsonc

@@ -0,0 +1,11 @@
+{
+  "$schema": "node_modules/wrangler/config-schema.json",
+  "name": "nextjs-16-tunnel",
+  "main": "./worker.ts",
+  "compatibility_date": "2026-02-19",
+  "compatibility_flags": ["nodejs_compat"],
+  "assets": {
+    "binding": "ASSETS",
+    "directory": ".open-next/assets",
+  },
+}