diff --git a/test/loaders/ApiBasedRepositoryLoaderTests.test.ts b/test/loaders/ApiBasedRepositoryLoaderTests.test.ts
index a8704aa..90cb41f 100644
--- a/test/loaders/ApiBasedRepositoryLoaderTests.test.ts
+++ b/test/loaders/ApiBasedRepositoryLoaderTests.test.ts
@@ -211,33 +211,35 @@ describe("ApiBasedRepositoryLoader", () => {
 
   describe("fetchAndUpdateEtaDataForExistingStopsForSystemsInRepository", () => {
     it("calls fetchAndUpdateEtaDataFoExistingStopsForSystemId for every system in repository", async () => {
+      const spy = jest.spyOn(loader, "fetchAndUpdateEtaDataForExistingStopsForSystemId");
 
+      const systems = generateMockSystems();
+      await Promise.all(systems.map(async (system) => {
+        await loader.repository.addOrUpdateSystem(system);
+      }));
+
+      await loader.fetchAndUpdateEtaDataForExistingStopsForSystemsInRepository();
+
+      expect(spy.mock.calls.length).toBe(systems.length);
     });
   });
 
   describe("fetchAndUpdateEtaDataForExistingStopsForSystemId", () => {
     it("calls fetchAndUpdateEtaDataForStopId for every stop in repository", async () => {
-      // const systems = generateMockSystems();
-      // await Promise.all(systems.map(async (system) => {
-      //   await loader.repository.addOrUpdateSystem(system);
-      // }));
-      //
-      // const stop: IStop = {
-      //   coordinates: {
-      //     latitude: 1,
-      //     longitude: 1,
-      //   },
-      //   id: "1",
-      //   name: "Chapman Court",
-      //   systemId: "263",
-      // };
-      // await loader.repository.addOrUpdateStop(stop);
+      const spy = jest.spyOn(loader, "fetchAndUpdateEtaDataForStopId");
+
       const stops = generateMockStops();
+      stops.forEach((stop) => {
+        stop.systemId = "1";
+      });
+
       await Promise.all(stops.map(async (stop) => {
         await loader.repository.addOrUpdateStop(stop);
-      }))
+      }));
 
+      await loader.fetchAndUpdateEtaDataForExistingStopsForSystemId("1");
 
+      expect(spy.mock.calls.length).toEqual(stops.length);
     });
   });