created express webserver test script

tests/express.test.js

@@ -0,0 +1,64 @@
+// tests/default.test.js
+
+const { spawn } = require('child_process'); // Required to spawn a test instance of the server
+const path = require('path'); // Allow accessing files relative to the current directory
+const request = require('supertest'); // Used to send http requests to the spawned instance
+const fs = require('fs-extra'); // Use file system operations
+
+require('dotenv').config({ path: path.resolve(__dirname, '../config/config.cfg') }); // Access parameters in the config.ini file
+const serverPort = process.env.SERVER_PORT;
+const serverAddress = process.env.SERVER_ADDRESS;
+
+let serverProcess;
+
+async function startServer() {
+    const serverPath = path.resolve(__dirname, '../server.js');
+
+    serverProcess = spawn('node', [serverPath]); // Spawn the process
+
+    return new Promise((resolve, reject) => {
+        serverProcess.stdout.on('data', (data) => {
+            const output = data.toString(); // Convert data to string
+            console.log(`Process Output: ${output}`);
+
+            // Check if the output contains the expected message
+            if (output.includes(`Now listening on ${serverAddress}:${serverPort}`)) {
+                // Server has started, resolve the promise
+                resolve();
+            }
+        });
+
+        // Handle process exit
+        serverProcess.on('exit', (code) => {
+            if (code !== 0) {
+                reject(new Error(`Server exited with code ${code}`));
+            }
+        });
+    });
+}
+
+async function stopServer() {
+	serverProcess.kill('SIGKILL');
+	await new Promise((resolve) => {
+		serverProcess.on('exit', () => { resolve(); });
+	});
+}
+
+describe('Test Suite A - Requests', () => {
+    beforeAll(startServer);
+
+    test('Test 1: Check connectivity', async () => {
+        const response = await request(`${serverAddress}:${serverPort}`).get(`/`);
+        expect([200, 302]).toContain(response.status);
+    });
+    test('Test 2: Receive website', async () => {
+        const response = await request(`${serverAddress}:${serverPort}`).get(`/`);
+        expect([200]).toContain(response.status);
+
+        const htmlContent = response.text; // Retreive index.html
+        const expectedHtmlContent = fs.readFileSync('./web/index.html', 'utf-8'); // Read file contents
+        expect(htmlContent).toEqual(expectedHtmlContent); // Validate the content of the response
+    });
+
+    afterAll(stopServer);
+});