diff --git a/test/repositories/UnoptimizedInMemoryRepositoryTests.test.ts b/test/repositories/UnoptimizedInMemoryRepositoryTests.test.ts
index 8d5dcb7..531cd00 100644
--- a/test/repositories/UnoptimizedInMemoryRepositoryTests.test.ts
+++ b/test/repositories/UnoptimizedInMemoryRepositoryTests.test.ts
@@ -431,21 +431,59 @@ describe("UnoptimizedInMemoryRepository", () => {
 
   describe("removeSystem", () => {
     test("removes system given ID", async () => {
+      const mockSystems = generateMockSystems();
+      await Promise.all(mockSystems.map(async (system) => {
+        await repository.addOrUpdateSystem(system);
+      }));
 
+      const systemToRemove = mockSystems[0];
+      await repository.removeSystemIfExists(systemToRemove.id);
+
+      const remainingSystems = await repository.getSystems();
+      expect(remainingSystems).toHaveLength(mockSystems.length - 1);
     });
 
     test("does nothing if system doesn't exist", async () => {
+      const mockSystems = generateMockSystems();
+      await Promise.all(mockSystems.map(async (system) => {
+        await repository.addOrUpdateSystem(system);
+      }));
 
+      await repository.removeSystemIfExists("nonexistent-id");
+
+      const remainingSystems = await repository.getSystems();
+      expect(remainingSystems).toHaveLength(mockSystems.length);
     });
   });
 
   describe("removeRoute", () => {
     test("removes route given ID", async () => {
+      const systemId = "1";
+      const mockRoutes = generateMockRoutes();
+      await Promise.all(mockRoutes.map(async (route) => {
+        route.systemId = systemId;
+        await repository.addOrUpdateRoute(route);
+      }));
 
+      const routeToRemove = mockRoutes[0];
+      await repository.removeRouteIfExists(routeToRemove.id);
+
+      const remainingRoutes = await repository.getRoutesBySystemId(systemId);
+      expect(remainingRoutes).toHaveLength(mockRoutes.length - 1);
     });
 
     test("does nothing if route doesn't exist", async () => {
+      const systemId = "1";
+      const mockRoutes = generateMockRoutes();
+      await Promise.all(mockRoutes.map(async (route) => {
+        route.systemId = systemId;
+        await repository.addOrUpdateRoute(route);
+      }));
 
+      await repository.removeRouteIfExists("nonexistent-id");
+
+      const remainingRoutes = await repository.getRoutesBySystemId(systemId);
+      expect(remainingRoutes).toHaveLength(mockRoutes.length);
     });
   });