diff --git a/src/index.ts b/src/index.ts
index cc2aa05..8bbc890 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,15 +2,15 @@ import { readFileSync } from "fs";
 import { ApolloServer } from "@apollo/server";
 import { startStandaloneServer } from "@apollo/server/standalone";
 import { resolvers } from "./resolvers";
-import { sharedMemory, SharedMemory } from "./sharedMemory";
+import { sharedMemory } from "./sharedMemory";
+import { loadTestData } from "./testData";
+import { ServerContext } from "./serverContext";
 
 const typeDefs = readFileSync("./schema.graphql", "utf8");
 
-interface ServerContext {
-  sharedMemory: SharedMemory,
-}
-
 async function main() {
+  loadTestData(sharedMemory);
+
   const server = new ApolloServer<ServerContext>({
     typeDefs,
     resolvers
diff --git a/src/resolvers.ts b/src/resolvers.ts
index 0dda813..4bc9695 100644
--- a/src/resolvers.ts
+++ b/src/resolvers.ts
@@ -1,133 +1,13 @@
 import { Eta, OrderedStop, Resolvers, Route, Shuttle, Stop, System } from "./generated/graphql";
+import { ServerContext } from "./serverContext";
 
-// Mock data
-const systems: System[] = [
-  {
-    id: "1",
-    name: "Chapman University",
-    routes: [],
-    stops: [],
-    shuttles: [],
-  },
-];
-
-const routes: Route[] = [
-  {
-    name: "Red Route",
-    id: "1",
-    system: systems[0],
-    orderedStops: [],
-    shuttles: [],
-    polylineCoordinates: [],
-    color: "#ffffff",
-  },
-  {
-    name: "Teal Route",
-    id: "2",
-    system: systems[0],
-    orderedStops: [],
-    shuttles: [],
-    polylineCoordinates: [],
-    color: "#ffffff",
-  },
-];
-
-const stops: Stop[] = [
-  {
-    id: "1",
-    name: "Chapman Court",
-    coordinates: {
-      latitude: 33.796001,
-      longitude: -117.8892805,
-    },
-    system: systems[0],
-    etas: [],
-    orderedStops: [],
-  },
-  {
-    id: "2",
-    name: "Chapman Grand",
-    coordinates: {
-      latitude: 33.804433,
-      longitude: -117.895966,
-    },
-    system: systems[0],
-    etas: [],
-    orderedStops: [],
-  }
-];
-
-const orderedStopsForRedRoute: OrderedStop[] = [
-  {
-    route: routes[0],
-    stop: stops[0],
-  },
-  {
-    route: routes[0],
-    stop: stops[1],
-  },
-];
-
-const orderedStopsForTealRoute: OrderedStop[] = [
-  {
-    route: routes[1],
-    stop: stops[1],
-  },
-  {
-    route: routes[1],
-    stop: stops[0],
-  }
-]
-
-orderedStopsForRedRoute[0].nextStop = orderedStopsForRedRoute[1];
-orderedStopsForRedRoute[1].previousStop = orderedStopsForRedRoute[0];
-orderedStopsForTealRoute[0].nextStop = orderedStopsForTealRoute[1];
-orderedStopsForTealRoute[1].previousStop = orderedStopsForTealRoute[0];
-
-stops[0].orderedStops = [orderedStopsForRedRoute[0], orderedStopsForTealRoute[1]];
-stops[1].orderedStops = [orderedStopsForRedRoute[1], orderedStopsForTealRoute[0]];
-routes[0].orderedStops = orderedStopsForRedRoute;
-routes[1].orderedStops = orderedStopsForTealRoute;
-
-const shuttles: Shuttle[] = [
-  {
-    name: "Red Shuttle 17",
-    id: "1",
-    coordinates: {
-      latitude: 33.796001,
-      longitude: -117.8892805,
-    },
-    route: routes[0],
-    system: systems[0],
-    etas: [],
-  }
-];
-
-const etas: Eta[] = [
-  {
-    stop: stops[0],
-    shuttle: shuttles[0],
-    secondsRemaining: 12.023,
-  },
-  {
-    stop: stops[1],
-    shuttle: shuttles[0],
-    secondsRemaining: 600.123,
-  }
-];
-
-shuttles[0].etas = etas;
-
-routes[0].shuttles = shuttles;
-
-systems[0].stops = stops;
-systems[0].routes = routes;
-systems[0].shuttles = shuttles;
-
-export const resolvers: Resolvers = {
+export const resolvers: Resolvers<ServerContext> = {
   Query: {
-    systems: () => systems,
+    systems: (parent, args, contextValue, info) => {
+      return contextValue.sharedMemory.systems;
+    },
     system: (parent, args, contextValue, info) => {
+      const systems = contextValue.sharedMemory.systems;
       const system = systems.find((system) => system.id === args.id);
       if (!system) {
         return null;
@@ -138,6 +18,8 @@ export const resolvers: Resolvers = {
   },
   System: {
     stop: (parent, args, contextValue, info) => {
+      // TODO implement interface with ID and one function to perform search
+      const stops = parent.stops;
       const stop = stops.find((stop) => stop.id === args.id);
       if (!stop) {
         return null;
@@ -146,6 +28,7 @@ export const resolvers: Resolvers = {
       return stop;
     },
     route: (parent, args, contextValue, info) => {
+      const routes = parent.routes
       const route = routes.find((route) => route.id === args.id);
       if (!route) {
         return null;
@@ -154,6 +37,7 @@ export const resolvers: Resolvers = {
       return route;
     },
     shuttle: (parent, args, contextValue, info) => {
+      const shuttles = parent.shuttles;
       const shuttle = shuttles.find((shuttle) => shuttle.id === args.id);
       if (!shuttle) {
         return null;
diff --git a/src/serverContext.ts b/src/serverContext.ts
new file mode 100644
index 0000000..d0667d7
--- /dev/null
+++ b/src/serverContext.ts
@@ -0,0 +1,5 @@
+import { SharedMemory } from "./sharedMemory";
+
+export interface ServerContext {
+  sharedMemory: SharedMemory,
+}
\ No newline at end of file
diff --git a/src/testData.ts b/src/testData.ts
new file mode 100644
index 0000000..ef694d3
--- /dev/null
+++ b/src/testData.ts
@@ -0,0 +1,130 @@
+// Mock data
+import { Eta, OrderedStop, Route, Shuttle, Stop, System } from "./generated/graphql";
+import { SharedMemory } from "./sharedMemory";
+
+const systems: System[] = [
+  {
+    id: "1",
+    name: "Chapman University",
+    routes: [],
+    stops: [],
+    shuttles: [],
+  },
+];
+
+const routes: Route[] = [
+  {
+    name: "Red Route",
+    id: "1",
+    system: systems[0],
+    orderedStops: [],
+    shuttles: [],
+    polylineCoordinates: [],
+    color: "#ffffff",
+  },
+  {
+    name: "Teal Route",
+    id: "2",
+    system: systems[0],
+    orderedStops: [],
+    shuttles: [],
+    polylineCoordinates: [],
+    color: "#ffffff",
+  },
+];
+
+const stops: Stop[] = [
+  {
+    id: "1",
+    name: "Chapman Court",
+    coordinates: {
+      latitude: 33.796001,
+      longitude: -117.8892805,
+    },
+    system: systems[0],
+    etas: [],
+    orderedStops: [],
+  },
+  {
+    id: "2",
+    name: "Chapman Grand",
+    coordinates: {
+      latitude: 33.804433,
+      longitude: -117.895966,
+    },
+    system: systems[0],
+    etas: [],
+    orderedStops: [],
+  }
+];
+
+const orderedStopsForRedRoute: OrderedStop[] = [
+  {
+    route: routes[0],
+    stop: stops[0],
+  },
+  {
+    route: routes[0],
+    stop: stops[1],
+  },
+];
+
+const orderedStopsForTealRoute: OrderedStop[] = [
+  {
+    route: routes[1],
+    stop: stops[1],
+  },
+  {
+    route: routes[1],
+    stop: stops[0],
+  }
+]
+
+orderedStopsForRedRoute[0].nextStop = orderedStopsForRedRoute[1];
+orderedStopsForRedRoute[1].previousStop = orderedStopsForRedRoute[0];
+orderedStopsForTealRoute[0].nextStop = orderedStopsForTealRoute[1];
+orderedStopsForTealRoute[1].previousStop = orderedStopsForTealRoute[0];
+
+stops[0].orderedStops = [orderedStopsForRedRoute[0], orderedStopsForTealRoute[1]];
+stops[1].orderedStops = [orderedStopsForRedRoute[1], orderedStopsForTealRoute[0]];
+routes[0].orderedStops = orderedStopsForRedRoute;
+routes[1].orderedStops = orderedStopsForTealRoute;
+
+const shuttles: Shuttle[] = [
+  {
+    name: "Red Shuttle 17",
+    id: "1",
+    coordinates: {
+      latitude: 33.796001,
+      longitude: -117.8892805,
+    },
+    route: routes[0],
+    system: systems[0],
+    etas: [],
+  }
+];
+
+const etas: Eta[] = [
+  {
+    stop: stops[0],
+    shuttle: shuttles[0],
+    secondsRemaining: 12.023,
+  },
+  {
+    stop: stops[1],
+    shuttle: shuttles[0],
+    secondsRemaining: 600.123,
+  }
+];
+
+shuttles[0].etas = etas;
+
+routes[0].shuttles = shuttles;
+
+systems[0].stops = stops;
+systems[0].routes = routes;
+systems[0].shuttles = shuttles;
+
+export function loadTestData(sharedMemory: SharedMemory) {
+  sharedMemory.systems = systems;
+}