Add a test for emitting the event

src/repositories/shuttle/__tests__/ShuttleRepositorySharedTests.test.ts

@@ -767,4 +767,30 @@ describe.each(repositoryImplementations)('$name', (holder) => {
       });
     });
   });
+
+  describe("SHUTTLE_WILL_LEAVE_STOP event", () => {
+    test("emits SHUTTLE_WILL_LEAVE_EVENT as a shuttle is leaving a stop", async () => {
+      const { stop1, sampleShuttleNotInRepository: shuttle } = await setupRouteAndOrderedStops();
+      shuttle.coordinates = stop1.coordinates;
+
+      const listener = jest.fn();
+      repository.addListener(ShuttleRepositoryEvent.SHUTTLE_WILL_LEAVE_STOP, listener);
+
+      // Simulate arrival at stop 1
+      await repository.addOrUpdateShuttle(shuttle);
+
+      shuttle.coordinates = { latitude: 12.5, longitude: 22.5 };
+
+      // Simulate leaving stop 1
+      await repository.addOrUpdateShuttle(shuttle);
+
+      expect(listener).toHaveBeenCalledWith({
+        stopArrivalThatShuttleIsLeaving: {
+          shuttleId: shuttle.id,
+          stopId: stop1.id,
+          timestamp: expect.any(Date),
+        },
+      });
+    });
+  });
 });