diff --git a/test/repositories/ApiBasedRepositoryTests.test.ts b/test/repositories/ApiBasedRepositoryTests.test.ts
index 1e353ed..7eba7bb 100644
--- a/test/repositories/ApiBasedRepositoryTests.test.ts
+++ b/test/repositories/ApiBasedRepositoryTests.test.ts
@@ -254,16 +254,9 @@ describe("getEtaForShuttleAndStopId", () => {
 
 describe("getEtasForShuttleId", () => {
   test("getEtasForShuttleId returns correct ETA data", async () => {
-    // Because I'm testing updateEtasForSystemIfTTL separately, force it to hit
-    // the cache for the stops
+    // Because I'm testing updateEtasForSystemIfTTL separately,
+    // stub it out here
 
-  });
-
-  test("getEtasForShuttleId returns empty array if no data available", async () => {
-
-  });
-
-  test("getEtasForShuttleId returns old data if not expired", async () => {
     updateGlobalFetchMockJson(genericEtaDataByStopId);
 
     const initialCache: ApiBasedRepositoryCache = {
@@ -286,10 +279,21 @@ describe("getEtasForShuttleId", () => {
     };
 
     const repository = new ApiBasedRepository(initialCache, ttls);
+    repository.updateEtasForSystemIfTTL = jest.fn(async () => {
+    });
     const result = await repository.getEtasForShuttleId("5577");
 
     expect(result).toEqual(initialCache.etasForShuttleId);
   });
+
+  test("getEtasForShuttleId returns empty array if no data available", async () => {
+    const repository = new ApiBasedRepository();
+    repository.updateEtasForSystemIfTTL = jest.fn(async () => {
+    });
+    const result = await repository.getEtasForShuttleId("5577");
+
+    expect(result).toEqual([]);
+  });
 });
 
 describe("getEtasForStopId", () => {