Merge pull request pedroavpereira#35 from pedroavpereira/test-control…

…lers-bookratings

Test controllers bookratings

__tests__/units/controllers/bookratings.test.js

@@ -0,0 +1,94 @@
+const { create, show } = require('../../../controllers/bookRatings')
+const BookRatings = require('../../../models/BookRatings')
+
+describe('BookRatings Controller', () => {
+
+    describe('create', () => {
+        it('should create a new book rating and return a 201 status', async() => {
+            const req = {body: { user_id:1, book_id:101, rating:5}}
+            const res = { status: jest.fn().mockReturnThis(), json: jest.fn()}
+
+            const mockNewRating = { ratings_id: 1, user_id: 1, book_id: 101, rating: 5}
+
+            jest.spyOn(BookRatings, 'create').mockResolvedValue(mockNewRating)
+
+            await create(req, res)
+
+            expect(BookRatings.create).toHaveBeenCalledWith(req.body)
+            expect(res.status).toHaveBeenCalledWith(201)
+            expect(res.json).toHaveBeenCalledWith(mockNewRating)
+        })
+
+        it('should return a 400 status if there is an error creating the book rating', async()=> {
+            const req = {body: { user_id: 1, book_id: 101, rating: 5}}
+            const res = {status: jest.fn().mockReturnThis(), json: jest.fn()}
+
+            jest.spyOn(BookRatings, 'create').mockRejectedValue(new Error('Database error'))
+
+            await create(req,res)
+
+            expect(BookRatings.create).toHaveBeenCalledWith(req.body)
+            expect(res.status).toHaveBeenCalledWith(400)
+            expect(res.json).toHaveBeenCalledWith({ error: 'Database error' })
+        })
+
+        it('should return a 400 status with "An unknown error occurred." if error has no message', async () => {
+            const req = { body: { user_id: 1, book_id: 101, rating: 5 } };
+            const res = { status: jest.fn().mockReturnThis(), json: jest.fn() };
+
+            jest.spyOn(BookRatings, 'create').mockRejectedValue(new Error());
+
+            await create(req, res);
+
+            expect(BookRatings.create).toHaveBeenCalledWith(req.body);
+            expect(res.status).toHaveBeenCalledWith(400);
+            expect(res.json).toHaveBeenCalledWith({ error: "An unknown error occurred." });
+        })
+    })
+
+    describe('show', () => {
+        it('should return book ratings and a 200 status', async() => {
+            const req = { params: { book_id: '101'}}
+            const res = { status: jest.fn().mockReturnThis(), json: jest.fn()}
+
+            const mockRatings = [
+                {ratings_id: 1, user_id: 1, book_id: 101, rating: 5},
+                {ratings_id: 2, user_id: 2, book_id: 101, rating: 4}
+            ]
+
+            jest.spyOn(BookRatings, 'findByBookId').mockResolvedValue(mockRatings)
+
+            await show(req,res)
+
+            expect(BookRatings.findByBookId).toHaveBeenCalledWith(101)
+            expect(res.status).toHaveBeenCalledWith(200)
+            expect(res.json).toHaveBeenCalledWith(mockRatings)
+        })
+
+        it('should return a 404 status if there is an error fetching book ratings', async() => {
+            const req = { params: {book_id: '101'}}
+            const res = { status: jest.fn().mockReturnThis(), json: jest.fn()}
+
+            jest.spyOn(BookRatings, 'findByBookId').mockRejectedValue(new Error('Database error'))
+
+            await show(req,res)
+
+            expect(BookRatings.findByBookId).toHaveBeenCalledWith(101)
+            expect(res.status).toHaveBeenCalledWith(404)
+            expect(res.json).toHaveBeenCalledWith({error: 'Database error'})
+        })
+
+        it('should return a 404 status with "Book ratings not found." if error has no message', async () => {
+            const req = { params: { book_id: '101' } };
+            const res = { status: jest.fn().mockReturnThis(), json: jest.fn() };
+
+            jest.spyOn(BookRatings, 'findByBookId').mockRejectedValue(new Error());
+
+            await show(req, res);
+
+            expect(BookRatings.findByBookId).toHaveBeenCalledWith(101);
+            expect(res.status).toHaveBeenCalledWith(404);
+            expect(res.json).toHaveBeenCalledWith({ error: "Book ratings not found." });
+        })
+    })
+})