Add server.unref to deal with diff versions of Node and http connections

Author: aulorbe

src/integration/data/vectors/upsertAndUpdate.test.ts

@@ -125,6 +125,12 @@ describe('Testing retry logic via a mock, in-memory http server', () => {
       }
     });
     server.listen(4000); // Host server on local port 4000
+    server.unref(); // Allow the server to close even if there are open connections
+
+    // Error handler
+    server.on('error', (error) => {
+      console.error('Server error:', error);
+    });
   };
 
   beforeEach(() => {
@@ -133,8 +139,14 @@ describe('Testing retry logic via a mock, in-memory http server', () => {
 
   afterEach(async () => {
     // Close server and reset mocks
-    await new Promise<void>((resolve) => server.close(() => resolve()));
-    jest.clearAllMocks();
+    // await new Promise<void>((resolve) => server.close(() => resolve()));
+    return new Promise<void>((resolve) => {
+      server.close(() => {
+        jest.clearAllMocks();
+        server.unref();
+        resolve();
+      });
+    });
   });
 
   test('Upsert operation should retry 1x if server responds 1x with error and 1x with success', async () => {