add test for getting parking structures associated with id

test/resolvers/SystemResolverTests.test.ts

@@ -1,6 +1,11 @@
 import { beforeEach, describe, expect, it } from "@jest/globals";
 import { setupTestServerContext, setupTestServerHolder } from "../testHelpers/apolloTestServerHelpers";
-import { generateMockRoutes, generateMockShuttles, generateMockStops } from "../testHelpers/mockDataGenerators";
+import {
+  generateMockRoutes,
+  generateMockShuttles,
+  generateMockStops,
+  generateParkingStructures
+} from "../testHelpers/mockDataGenerators";
 import {
   addMockRouteToRepository,
   addMockShuttleToRepository,
@@ -310,8 +315,36 @@ describe("SystemResolvers", () => {
   });
 
   describe("parkingStructures", () => {
-    it("gets parking structures associated with the system id", async () => {
+    const query = `
+    query GetParkingStructuresBySystem($systemId: ID!) {
+      system(id: $systemId) {
+        parkingStructures {
+          name
+          id
+          capacity
+          spotsAvailable
+          coordinates {
+            latitude
+            longitude
+          }
+          address
+        }
+      }
+    }
+    `
 
+    it("gets parking structures associated with the system id", async () => {
+      const expectedParkingStructures = generateParkingStructures();
+      await Promise.all(expectedParkingStructures.map(async (structure) => {
+        await context.systems[0].parkingRepository?.addOrUpdateParkingStructure(structure);
+      }));
+
+      const response = await getResponseFromQueryNeedingSystemId(query);
+
+      assert(response.body.kind === "single");
+      expect(response.body.singleResult.errors).toBeUndefined();
+      const parkingStructures = (response.body.singleResult.data as any).parkingStructures;
+      expect(parkingStructures).toEqual(expectedParkingStructures);
     });
 
     it("returns a blank array if there are no parking structures", async () => {