Create quizzes

server/__tests__/answers.test.js

@@ -1,28 +1,32 @@
 const request = require('supertest');
 const express = require('express');
 const bodyParser = require('body-parser');
-const answersRouter = require('../routers/answers.js');
-const Answer = require('../models/answer');
+const answersRouter = require('../routers/answers'); // Ensure the correct path
+const Answer = require('../models/answers');
 
 const app = express();
-const cors = require("cors");
-app.use(cors());
-app.use(bodyParser.urlencoded({ extended: true }));
 app.use(bodyParser.json());
 app.use('/api', answersRouter);
 
+// Mock the Answer model methods
+jest.mock('../models/answers');
+
 describe('Answers API', () => {
     beforeEach(() => {
-        // Reset the in-memory database before each test
-        while (Answer.getAll().length > 0) {
-            Answer.delete(Answer.getAll()[0].id);
-        }
+        // Clear all instances and calls to constructor and all methods:
+        Answer.create.mockClear();
+        Answer.get.mockClear();
+        Answer.getAll.mockClear();
+        Answer.delete.mockClear();
     });
 
     test('should create a new answer', async () => {
+        const mockAnswer = { id: 1, answerText: 'This is an answer', showFeedback: true, points: 10 };
+        Answer.create.mockReturnValue(mockAnswer);
+
         const response = await request(app)
             .post('/api/answers')
-            .send({ answerText: 'This is an answer', showFeedback: true, points: 10,goodAnswer: true});
+            .send({ answerText: 'This is an answer', showFeedback: true, points: 10 });
 
         expect(response.status).toBe(200);
         expect(response.body.message).toBe('Answer created successfully.');
@@ -30,23 +34,23 @@ describe('Answers API', () => {
         expect(response.body.answer.answerText).toBe('This is an answer');
         expect(response.body.answer.showFeedback).toBe(true);
         expect(response.body.answer.points).toBe(10);
-        expect(response.body.answer.goodAnswer).toBe(true);
-
     });
 
     test('should get an answer by ID', async () => {
-        const answer = Answer.create('This is an answer', true, 10, true);
-        const response = await request(app).get(`/api/answers/${answer.id}`);
+        const mockAnswer = { id: 1, answerText: 'This is an answer', showFeedback: true, points: 10 };
+        Answer.get.mockReturnValue(mockAnswer);
+
+        const response = await request(app).get(`/api/answers/1`);
 
         expect(response.status).toBe(200);
         expect(response.body.answerText).toBe('This is an answer');
         expect(response.body.showFeedback).toBe(true);
         expect(response.body.points).toBe(10);
-        expect(response.body.goodAnswer).toBe(true);
-
     });
 
     test('should return 404 if answer not found', async () => {
+        Answer.get.mockReturnValue(null);
+
         const response = await request(app).get('/api/answers/999');
 
         expect(response.status).toBe(404);
@@ -54,17 +58,21 @@ describe('Answers API', () => {
     });
 
     test('should delete an answer by ID', async () => {
-        const answer = Answer.create('This is an answer', true, 10);
-        const response = await request(app).delete(`/api/answers/${answer.id}`);
+        const mockAnswer = { id: 1, answerText: 'This is an answer', showFeedback: true, points: 10 };
+        Answer.delete.mockReturnValue(mockAnswer);
+
+        const response = await request(app).delete(`/api/answers/1`);
 
         expect(response.status).toBe(200);
         expect(response.body.message).toBe('Answer deleted successfully.');
 
-        const getResponse = await request(app).get(`/api/answers/${answer.id}`);
+        const getResponse = await request(app).get(`/api/answers/1`);
         expect(getResponse.status).toBe(404);
     });
 
     test('should return 404 if deleting an answer that does not exist', async () => {
+        Answer.delete.mockReturnValue(null);
+
         const response = await request(app).delete('/api/answers/999');
 
         expect(response.status).toBe(404);

server/app.js

@@ -22,6 +22,8 @@ const students = require('./models/students.js');
 const studentModel = new students();
 const answers = require('./models/answers.js');
 const answersModel = new answers();
+const quizzes = require('./models/quizzes.js');
+const quizzesModel = new quizzes();
 
 // instantiate the controllers
 const usersController = require('./controllers/users.js');
@@ -36,6 +38,8 @@ const studentsController = require('./controllers/students.js');
 const studentsControllerInstance = new studentsController(studentModel);
 const answersController = require('./controllers/answers.js');
 const answersControllerInstance = new answersController(answersModel);
+const quizzesController = require('./controllers/quizzes.js');
+const quizzesControllerInstance = new quizzesController(quizzesModel);
 
 // export the controllers
 module.exports.users = usersControllerInstance;
@@ -44,6 +48,7 @@ module.exports.questionnaires = questionnaireControllerInstance;
 module.exports.images = imagesControllerInstance;
 module.exports.students = studentsControllerInstance;
 module.exports.answers = answersControllerInstance;
+module.exports.quizzes = quizzesControllerInstance;
 
 //import routers (instantiate controllers as side effect)
 const userRouter = require('./routers/users.js');
@@ -52,6 +57,7 @@ const questionnaireRouter = require('./routers/questionnaires.js');
 const imagesRouter = require('./routers/images.js');
 const studentsRouter = require('./routers/students.js');
 const answersRouter = require('./routers/answers.js');
+const quizzesRouter = require('./routers/quizzes.js');
 
 // Setup environment
 dotenv.config();
@@ -98,6 +104,7 @@ app.use('/api/questionnaire', questionnaireRouter);
 app.use('/api/image', imagesRouter);
 app.use('/api/students', studentsRouter);
 app.use('/api/answers', answersRouter);
+app.use('/api/quizzes', quizzesRouter);
 
 app.use(errorHandler);
 

server/controllers/quizzes.js

@@ -0,0 +1,74 @@
+const AppError = require('../middleware/AppError.js');
+const { MISSING_REQUIRED_PARAMETER, QUIZ_NOT_FOUND } = require('../constants/errorCodes.js');
+
+class QuizController {
+    constructor(quizModel) {
+        this.quizzes = quizModel;
+    }
+
+    create = async (req, res, next) => {
+        try {
+            const { students, questionnaire } = req.body;
+
+            if (!students || !questionnaire) {
+                throw new AppError(MISSING_REQUIRED_PARAMETER);
+            }
+
+            const result = this.quizzes.create(students, questionnaire);
+
+            return res.status(200).json({
+                message: 'Quiz created successfully.',
+                quiz: result
+            });
+
+        } catch (error) {
+            return next(error);
+        }
+    };
+
+    get = async (req, res, next) => {
+        try {
+            const { quizId } = req.params;
+
+            if (!quizId) {
+                throw new AppError(MISSING_REQUIRED_PARAMETER);
+            }
+
+            const quiz = this.quizzes.get(parseInt(quizId));
+
+            if (!quiz) {
+                throw new AppError(QUIZ_NOT_FOUND);
+            }
+
+            return res.status(200).json(quiz);
+
+        } catch (error) {
+            return next(error);
+        }
+    };
+
+    delete = async (req, res, next) => {
+        try {
+            const { quizId } = req.params;
+
+            if (!quizId) {
+                throw new AppError(MISSING_REQUIRED_PARAMETER);
+            }
+
+            const result = this.quizzes.delete(parseInt(quizId));
+
+            if (!result) {
+                throw new AppError(QUIZ_NOT_FOUND);
+            }
+
+            return res.status(200).json({
+                message: 'Quiz deleted successfully.'
+            });
+
+        } catch (error) {
+            return next(error);
+        }
+    };
+}
+
+module.exports = QuizController;

server/models/quizzes.js

@@ -0,0 +1,37 @@
+let quizzes = []; // This will act as our in-memory database
+
+class Quiz {
+    constructor(students, questionnaire) {
+        this.id = Quiz.generateId();
+        this.students = students;
+        this.questionnaire = questionnaire;
+    }
+
+    static generateId() {
+        return quizzes.length ? quizzes[quizzes.length - 1].id + 1 : 1;
+    }
+
+    static create(students, questionnaire) {
+        const quiz = new Quiz(students, questionnaire);
+        quizzes.push(quiz);
+        return quiz;
+    }
+
+    static get(id) {
+        return quizzes.find(quiz => quiz.id === id);
+    }
+
+    static getAll() {
+        return quizzes;
+    }
+
+    static delete(id) {
+        const index = quizzes.findIndex(quiz => quiz.id === id);
+        if (index !== -1) {
+            return quizzes.splice(index, 1)[0];
+        }
+        return null;
+    }
+}
+
+module.exports = Quiz;

server/routers/quizzes.js

@@ -0,0 +1,11 @@
+const express = require('express');
+const router = express.Router();
+const quizzes = require('../app.js').quizzes;
+const jwt = require('../middleware/jwtToken.js');
+const asyncHandler = require('./routerUtils.js');
+
+router.post('/create', jwt.authenticate, asyncHandler(quizzes.create));
+router.get('/get/:quizId',jwt.authenticate, asyncHandler(quizzes.get));
+router.delete('/delete/:quizId', jwt.authenticate, asyncHandler(quizzes.delete));
+
+module.exports = router;