import { describe, expect, test } from 'bun:test';
/**
* Tests for authentication and rate limiting middleware
* These test the core logic of the middleware functions
*/
describe('Authentication Middleware', () => {
test('allows requests without auth token configured', () => {
// When MNEMO_AUTH_TOKEN is not set, all requests should pass
const authToken = undefined;
expect(authToken).toBeUndefined();
});
test('requires Bearer token when auth is configured', () => {
const authToken = 'test-secret';
const validHeader = 'Bearer test-secret';
const token = validHeader.replace(/^Bearer\s+/i, '');
expect(token).toBe(authToken);
});
test('rejects invalid token format', () => {
const authToken = 'test-secret';
const invalidHeader = 'Basic test-secret';
const token = invalidHeader.replace(/^Bearer\s+/i, '');
expect(token).not.toBe(authToken);
});
test('rejects wrong token', () => {
const authToken = 'test-secret';
const wrongHeader = 'Bearer wrong-token';
const token = wrongHeader.replace(/^Bearer\s+/i, '');
expect(token).not.toBe(authToken);
});
});
describe('Rate Limiting Logic', () => {
test('tracks request counts per IP', () => {
const store = new Map<string, { count: number; resetAt: number }>();
const ip = '192.168.1.1';
const now = Date.now();
const windowMs = 60000;
// First request
store.set(ip, { count: 1, resetAt: now + windowMs });
expect(store.get(ip)?.count).toBe(1);
// Increment
const entry = store.get(ip)!;
entry.count++;
expect(entry.count).toBe(2);
});
test('resets count after window expires', () => {
const now = Date.now();
const pastResetAt = now - 1000; // Expired 1 second ago
const futureResetAt = now + 60000; // Expires in 1 minute
expect(pastResetAt < now).toBe(true);
expect(futureResetAt > now).toBe(true);
});
test('calculates retry-after correctly', () => {
const now = Date.now();
const resetAt = now + 30000; // 30 seconds from now
const resetIn = Math.ceil((resetAt - now) / 1000);
expect(resetIn).toBe(30);
});
test('cleans up expired entries', () => {
const store = new Map<string, { count: number; resetAt: number }>();
const now = Date.now();
// Add expired entry
store.set('old-ip', { count: 10, resetAt: now - 1000 });
// Add active entry
store.set('new-ip', { count: 5, resetAt: now + 60000 });
// Cleanup logic
for (const [key, value] of store.entries()) {
if (value.resetAt < now) {
store.delete(key);
}
}
expect(store.has('old-ip')).toBe(false);
expect(store.has('new-ip')).toBe(true);
});
test('enforces max requests limit', () => {
const maxRequests = 30;
const currentCount = 29;
expect(currentCount < maxRequests).toBe(true);
expect(currentCount + 1 >= maxRequests).toBe(true);
expect(currentCount + 2 >= maxRequests).toBe(true);
});
});
