add test to check that connection is reused

test/notifications/senders/AppleNotificationSenderTests.test.ts

@@ -91,7 +91,7 @@ describe("AppleNotificationSender", () => {
   });
 
   describe("sendNotificationImmediately", () => {
-    it('makes the connection to the http server if the notification should be sent', async () => {
+    it('makes the connection to the http server if sending a notification for the first time', async () => {
       const notificationArguments: NotificationAlertArguments = {
         title: 'Test notification',
         body: 'This notification will send',
@@ -103,6 +103,20 @@ describe("AppleNotificationSender", () => {
       expect(result).toBe(true);
     });
 
+    it('reuses the existing connection if sending another notification', async () => {
+      const notificationArguments: NotificationAlertArguments = {
+        title: 'Test notification',
+        body: 'This notification will send',
+      }
+
+      const result1 = await notificationSender.sendNotificationImmediately('1', notificationArguments);
+      const result2 = await notificationSender.sendNotificationImmediately('1', notificationArguments);
+
+      expect(http2.connect).toHaveBeenCalledTimes(1);
+      expect(result1).toBe(true);
+      expect(result2).toBe(true);
+    });
+
     it('throws an error if the bundle ID is not set correctly', async () => {
       process.env = {
         ...process.env,