diff --git a/test/services/NotificationServiceTests.test.ts b/test/services/NotificationServiceTests.test.ts
index 3cd2978..b0aa767 100644
--- a/test/services/NotificationServiceTests.test.ts
+++ b/test/services/NotificationServiceTests.test.ts
@@ -71,11 +71,6 @@ describe("NotificationService", () => {
         stopId: "1",
         secondsRemaining: 120,
       };
-
-      // Simulate 200 + empty object for successful push notification
-      updateGlobalFetchMockJson({});
-
-      // Act
       const notificationData1 = {
         deviceId: "1",
         shuttleId: eta.shuttleId,
@@ -85,6 +80,11 @@ describe("NotificationService", () => {
         ...notificationData1,
         deviceId: "2",
       }
+
+      // Simulate 200 + empty object for successful push notification
+      updateGlobalFetchMockJson({});
+
+      // Act
       await notificationService.scheduleNotification(notificationData1);
       await notificationService.scheduleNotification(notificationData2);
       await repository.addOrUpdateEta(eta);
@@ -99,6 +99,28 @@ describe("NotificationService", () => {
     });
 
     it("leaves notification in array if delivery unsuccessful", async () => {
+      // Arrange
+      const eta: IEta = {
+        shuttleId: "1",
+        stopId: "1",
+        secondsRemaining: 120,
+      };
+      const notificationData = {
+        deviceId: "1",
+        shuttleId: eta.shuttleId,
+        stopId: eta.stopId,
+      }
+
+      updateGlobalFetchMockJson({}, 400);
+
+      // Act
+      await notificationService.scheduleNotification(notificationData);
+      await repository.addOrUpdateEta(eta);
+
+      // Assert
+      // The notification should stay scheduled to be retried once
+      // the ETA updates again
+      expect(notificationService.isNotificationScheduled(notificationData)).toBe(true);
     });
   });