a

Backend/tests/k6/login-load-test.js

@@ -0,0 +1,140 @@
+// Backend/tests/k6/login-load-test.js
+// Load test สำหรับ Login API โดยใช้ test credentials ที่สร้างไว้
+import http from 'k6/http';
+import { check, sleep } from 'k6';
+import { Rate, Trend, Counter } from 'k6/metrics';
+import { SharedArray } from 'k6/data';
+
+// Load test credentials
+const students = new SharedArray('students', function () {
+    return JSON.parse(open('./test-credentials.json')).students;
+});
+
+// Custom metrics
+const errorRate = new Rate('errors');
+const loginDuration = new Trend('login_duration');
+const successfulLogins = new Counter('successful_logins');
+const failedLogins = new Counter('failed_logins');
+
+// Test configuration
+export const options = {
+    // Ramp-up pattern
+    stages: [
+        { duration: '10s', target: 10 },  // Ramp up to 10 users
+        { duration: '30s', target: 10 },  // Stay at 10 users
+        { duration: '10s', target: 25 },  // Ramp up to 25 users
+        { duration: '30s', target: 25 },  // Stay at 25 users
+        { duration: '10s', target: 50 },  // Ramp up to 50 users
+        { duration: '30s', target: 50 },  // Stay at 50 users
+        { duration: '10s', target: 0 },   // Ramp down
+    ],
+    thresholds: {
+        http_req_duration: ['p(95)<2000'],  // 95% of requests < 2s
+        errors: ['rate<0.1'],               // Error rate < 10%
+        login_duration: ['p(95)<2000'],     // 95% of logins < 2s
+    },
+};
+
+const BASE_URL = __ENV.BASE_URL || 'http://192.168.1.137:4000';
+
+export default function () {
+    // เลือก student แบบ random จาก credentials
+    const student = students[Math.floor(Math.random() * students.length)];
+
+    const payload = JSON.stringify({
+        email: student.email,
+        password: student.password,
+    });
+
+    const params = {
+        headers: {
+            'Content-Type': 'application/json',
+        },
+    };
+
+    // Test Login
+    const startTime = new Date();
+    const res = http.post(`${BASE_URL}/api/auth/login`, payload, params);
+    const duration = new Date() - startTime;
+
+    // Record metrics
+    loginDuration.add(duration);
+    
+    const isSuccess = res.status === 200;
+    errorRate.add(!isSuccess);
+
+    if (isSuccess) {
+        successfulLogins.add(1);
+    } else {
+        failedLogins.add(1);
+        console.log(`Login failed for ${student.email}: ${res.status} - ${res.body}`);
+    }
+
+    // Assertions
+    check(res, {
+        'status is 200': (r) => r.status === 200,
+        'has access token': (r) => {
+            try {
+                const body = JSON.parse(r.body);
+                return body.data && body.data.accessToken;
+            } catch (e) {
+                return false;
+            }
+        },
+        'has refresh token': (r) => {
+            try {
+                const body = JSON.parse(r.body);
+                return body.data && body.data.refreshToken;
+            } catch (e) {
+                return false;
+            }
+        },
+        'response time < 2s': (r) => r.timings.duration < 2000,
+    });
+
+    // Think time between requests (simulate real user behavior)
+    sleep(Math.random() * 2 + 1); // 1-3 seconds
+}
+
+// Summary handler
+export function handleSummary(data) {
+    return {
+        'stdout': textSummary(data, { indent: ' ', enableColors: true }),
+        'login-load-test-summary.json': JSON.stringify(data, null, 2),
+    };
+}
+
+function textSummary(data, options) {
+    const metrics = data.metrics;
+    
+    let summary = '\n========== LOGIN LOAD TEST SUMMARY ==========\n\n';
+    
+    // Request stats
+    if (metrics.http_reqs) {
+        summary += `Total Requests: ${metrics.http_reqs.values.count}\n`;
+    }
+    if (metrics.successful_logins) {
+        summary += `Successful Logins: ${metrics.successful_logins.values.count}\n`;
+    }
+    if (metrics.failed_logins) {
+        summary += `Failed Logins: ${metrics.failed_logins.values.count}\n`;
+    }
+    
+    // Duration stats
+    if (metrics.http_req_duration) {
+        summary += `\nResponse Time:\n`;
+        summary += `  - Avg: ${metrics.http_req_duration.values.avg.toFixed(2)}ms\n`;
+        summary += `  - Min: ${metrics.http_req_duration.values.min.toFixed(2)}ms\n`;
+        summary += `  - Max: ${metrics.http_req_duration.values.max.toFixed(2)}ms\n`;
+        summary += `  - p(95): ${metrics.http_req_duration.values['p(95)'].toFixed(2)}ms\n`;
+    }
+    
+    // Error rate
+    if (metrics.errors) {
+        summary += `\nError Rate: ${(metrics.errors.values.rate * 100).toFixed(2)}%\n`;
+    }
+    
+    summary += '\n==============================================\n';
+    
+    return summary;
+}