chore: fix flaky rejection_handled_web_process (#23817)

Closes https://github.com/denoland/deno/issues/23712

tests/integration/node_unit_tests.rs

@@ -202,12 +202,3 @@ itest!(unhandled_rejection_web_process {
   envs: env_vars_for_npm_tests(),
   http_server: true,
 });
-
-// Ensure that Web `onrejectionhandled` is fired before
-// Node's `process.on('rejectionHandled')`.
-itest!(rejection_handled_web_process {
-  args: "run -A --quiet node/rejection_handled_web_process.ts",
-  output: "node/rejection_handled_web_process.ts.out",
-  envs: env_vars_for_npm_tests(),
-  http_server: true,
-});

tests/specs/node/rejection_handled_web_process/__test__.jsonc

@@ -0,0 +1,6 @@
+// Ensure that Web `onrejectionhandled` is fired before
+// Node's `process.on('rejectionHandled')`.
+{
+  "args": "run -A --quiet rejection_handled_web_process.ts",
+  "output": "rejection_handled_web_process.ts.out"
+}

tests/specs/node/rejection_handled_web_process/rejection_handled_web_process.ts

@@ -3,6 +3,8 @@ import process from "node:process";
 
 console.log(chalk.red("Hello world!"));
 
+const { promise, resolve } = Promise.withResolvers();
+
 globalThis.addEventListener("unhandledrejection", (e) => {
   console.log('globalThis.addEventListener("unhandledrejection");');
   e.preventDefault();
@@ -14,6 +16,7 @@ globalThis.addEventListener("rejectionhandled", (_) => {
 
 process.on("rejectionHandled", (_) => {
   console.log("Node rejectionHandled");
+  resolve();
 });
 
 const a = Promise.reject(1);
@@ -21,6 +24,12 @@ setTimeout(() => {
   a.catch(() => console.log("Added catch handler to the promise"));
 }, 100);
 
-setTimeout(() => {
+const exitTimeout = setTimeout(() => {
+  console.error("timeout expired");
+  Deno.exit(1);
+}, 30_000);
+
+promise.then(() => {
   console.log("Success");
-}, 1000);
+  clearTimeout(exitTimeout);
+});

tools/lint.js

@@ -216,7 +216,7 @@ async function ensureNoNewITests() {
     // Read the comment above. Please don't increase these numbers!
     "lsp_tests.rs": 0,
     "node_compat_tests.rs": 4,
-    "node_unit_tests.rs": 3,
+    "node_unit_tests.rs": 2,
     "npm_tests.rs": 98,
     "pm_tests.rs": 0,
     "publish_tests.rs": 0,