Update apollo-server to version 3 and graphql to version 16

Author: lukasbals

README.md

@@ -17,6 +17,7 @@ import { createTestClient } from 'apollo-server-integration-testing';
 import { createApolloServer } from './myServerCreationCode';
 
 const apolloServer = await createApolloServer();
+await apolloServer.start();
 const { query, mutate } = createTestClient({
   apolloServer,
 });

package.json

@@ -25,14 +25,14 @@
     "prettier": "prettier --check src"
   },
   "dependencies": {
-    "apollo-server-core": "^2.9.13",
-    "apollo-server-express": "^2.9.13",
+    "apollo-server-core": "^3.6.7",
+    "apollo-server-express": "^3.6.7",
     "express": "^4.17.1",
     "node-mocks-http": "^1.8.0"
   },
   "devDependencies": {
     "@types/jest": "^26.0.15",
-    "graphql": "0.12.0",
+    "graphql": "^16.3.0",
     "husky": "^4.2.5",
     "jest": "^26.6.3",
     "lint-staged": "^10.2.11",
@@ -41,7 +41,7 @@
     "typescript": "^4.2.4"
   },
   "peerDependencies": {
-    "graphql": "^0.12.0 || ^0.13.0 || ^14.0.0 || ^15.0.0"
+    "graphql": "^0.12.0 || ^0.13.0 || ^14.0.0 || ^15.0.0 || ^16.0.0"
   },
   "husky": {
     "hooks": {

src/__tests__/createTestClient.ts

@@ -15,6 +15,10 @@ describe('createTestClient', () => {
     }
   }`;
 
+  beforeAll(async () => {
+    await apolloServer.start();
+  });
+
   beforeEach(() => {
     database.books = [
       {