Merge branch '51-make-a-test-guide-for-backend' into 'main'

A guide for testing was added

Closes #51

See merge request !18

package.json

@@ -4,7 +4,7 @@
     "description": "",
     "main": "index.js",
     "scripts": {
-        "test": "echo \"Error: no test specified\" && exit 1",
+        "test": "mocha",
         "start": "nodemon index.js",
         "format": "prettier --write ."
     },
@@ -23,5 +23,10 @@
         "swagger-jsdoc": "^6.2.8",
         "swagger-ui-express": "^5.0.0",
         "winston": "^3.10.0"
+    },
+    "devDependencies": {
+        "chai": "^4.3.10",
+        "mocha": "^10.2.0",
+        "sinon": "^16.1.0"
     }
 }

test/questionController.test.js

+const { expect } = require("chai");
+const { MongoClient } = require("mongodb"); // Import MongoClient for test setup
+const { addQuestion, getQuestion } = require("../controllers/question.controller");
+const { connectToDatabase } = require("../utils/mongoDB");
+
+describe("Question Controller Tests", () => {
+    let client;
+
+    before(async () => {
+        client = await connectToDatabase();
+    });
+
+    after(async () => {
+        await client.close();
+    });
+
+    beforeEach(async () => {
+        // Clear the questions collection before each test
+        const db = client.db("TrioTech");
+        await db.collection("questions").deleteMany({});
+    });
+
+    it("should add a question", async () => {
+        const questionData = {
+            text: "What is the capital of France?",
+            category: 123, // You should use a valid category ID here
+        };
+
+        const result = await addQuestion(questionData);
+
+        expect(result.insertedCount).to.equal(1);
+        expect(result.ops[0].text).to.equal(questionData.text);
+    });
+
+    it("should get a question by ID", async () => {
+        // Insert a sample question into the database for testing
+        const sampleQuestion = {
+            text: "Sample Question",
+            category: "123", // You should use a valid category ID here
+        };
+        const db = client.db("TrioTech");
+        const questionCollection = db.collection("questions");
+        const insertedQuestion = await questionCollection.insertOne(sampleQuestion);
+
+        const questionId = insertedQuestion.insertedId.toString();
+
+        const result = await getQuestion(questionId);
+
+        expect(result).to.not.be.null;
+        expect(result.text).to.equal(sampleQuestion.text);
+    });
+});