test: reduce flakiness of test-esm-loader-hooks

PR-URL: #49248 Reviewed-By: Moshe Atlow <[email protected]> Reviewed-By: Jacob Smith <[email protected]> Reviewed-By: Geoffrey Booth <[email protected]> Reviewed-By: Yagiz Nizipli <[email protected]>
nodejs · Aug 20, 2023 · 0daea96 · 0daea96
1 parent 5026293
commit 0daea96
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Showing 2 changed files with 13 additions and 8 deletions.
diff --git a/test/es-module/test-esm-loader-hooks.mjs b/test/es-module/test-esm-loader-hooks.mjs
@@ -599,7 +599,7 @@ describe('Loader hooks', { concurrency: true }, () => {
       `
         import {MessageChannel} from 'node:worker_threads';
         import {register} from 'node:module';
-        import {setTimeout} from 'node:timers/promises';
+        import {once} from 'node:events';
         const {port1, port2} = new MessageChannel();
         port1.on('message', (msg) => {
           console.log('message', msg);
@@ -610,8 +610,12 @@ describe('Loader hooks', { concurrency: true }, () => {
         );
         console.log('register', result);
 
-        await import('node:os');
-        await setTimeout(99); // delay to limit flakiness
+        const timeout = setTimeout(() => {}, 2**31 - 1); // to keep the process alive.
+        await Promise.all([
+          once(port1, 'message').then(() => once(port1, 'message')),
+          import('node:os'),
+        ]);
+        clearTimeout(timeout);
         port1.close();
       `,
     ]);
@@ -707,10 +711,10 @@ describe('Loader hooks', { concurrency: true }, () => {
     ]);
 
     assert.strictEqual(stderr, '');
-    assert.deepStrictEqual(stdout.split('\n'), [ 'result 1',
-                                                 'result 2',
-                                                 'hooks initialize 1',
+    assert.deepStrictEqual(stdout.split('\n'), [ 'hooks initialize 1',
+                                                 'result 1',
                                                  'hooks initialize 2',
+                                                 'result 2',
                                                  '' ]);
     assert.strictEqual(code, 0);
     assert.strictEqual(signal, null);

diff --git a/test/fixtures/es-module-loaders/hooks-initialize.mjs b/test/fixtures/es-module-loaders/hooks-initialize.mjs
@@ -1,7 +1,8 @@
+import { writeFileSync } from 'node:fs';
+
 let counter = 0;
 
 export async function initialize() {
-  counter += 1;
-  console.log('hooks initialize', counter);
+  writeFileSync(1, `hooks initialize ${++counter}\n`);
   return counter;
 }