Created a test for the new york times API middleware

__tests__/apiController.test.js

@@ -0,0 +1,54 @@
+const apiController = require('../server/controllers/apiController.js');
+const fetch = require('node-fetch');
+
+jest.mock('node-fetch');
+
+describe('apiController.newYorkTimes', () => {
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('should fetch top-selling books data from the New York Times API and store it in res.locals.bestSellers', async () => {
+    const mockResponse = {
+      json: jest.fn().mockResolvedValueOnce({
+        results: {
+          books: [
+            { title: 'Mock Book 1', author: 'Mock Author 1', rank: 1 },
+            { title: 'Mock Book 2', author: 'Mock Author 2', rank: 2 }
+          ]
+        }
+      })
+    };
+
+    fetch.mockResolvedValueOnce(mockResponse);
+
+    const req = {};
+    const res = {};
+    const next = jest.fn();
+
+    await apiController.newYorkTimes(req, res, next);
+
+    expect(fetch).toHaveBeenCalledWith('INSERT THE API HERE');
+    expect(mockResponse.json).toHaveBeenCalled();
+    expect(res.locals.bestSellers).toEqual([
+      { title: 'Mock Book 1', author: 'Mock Author 1', rank: 1 },
+      { title: 'Mock Book 2', author: 'Mock Author 2', rank: 2 }
+    ]);
+    expect(next).toHaveBeenCalled();
+  });
+
+  it('should handle error if there is an issue fetching top-selling books data from the New York Times API', async () => {
+    const mockError = new Error('Mocked error in fetch');
+    fetch.mockRejectedValueOnce(mockError);
+
+    const req = {};
+    const res = {};
+    const next = jest.fn();
+
+    await apiController.newYorkTimes(req, res, next);
+
+    expect(fetch).toHaveBeenCalledWith('INSERT THE API HERE');
+    expect(res.locals.bestSellers).toBeUndefined();
+    expect(next).toHaveBeenCalledWith(mockError);
+  });
+});

server/controllers/apiController.js

@@ -33,6 +33,10 @@ apiController.checkApi = async (req, res, next) => {
     }
 }
 
+apiController.newYorkTimes = async (req, res, next) => {
+
+}
+
 // apiController.addToGlobalLibrary = async (req, res, next) => {
 //     try {
 //         const olWorkNumber = req.body;