slim-blog/tests/Auth/AuthServiceRateLimitTest.php

<?php
declare(strict_types=1);

namespace Tests\Auth;

use App\Auth\AuthService;
use App\Auth\LoginAttemptRepositoryInterface;
use App\Shared\Http\SessionManagerInterface;
use App\User\UserRepositoryInterface;
use PHPUnit\Framework\MockObject\MockObject;
use PHPUnit\Framework\TestCase;

/**
 * Tests unitaires pour la protection anti-brute force de AuthService.
 *
 * Vérifie le comportement de checkRateLimit(), recordFailure() et
 * resetRateLimit(). Les constantes testées correspondent aux valeurs
 * définies dans AuthService :
 *   - MAX_ATTEMPTS = 5  : nombre d'échecs avant verrouillage
 *   - LOCK_MINUTES = 15 : durée du verrouillage en minutes
 */
final class AuthServiceRateLimitTest extends TestCase
{
    /** @var UserRepositoryInterface&MockObject */
    private UserRepositoryInterface $userRepository;

    /** @var SessionManagerInterface&MockObject */
    private SessionManagerInterface $sessionManager;

    /** @var LoginAttemptRepositoryInterface&MockObject */
    private LoginAttemptRepositoryInterface $loginAttemptRepository;

    private AuthService $service;

    protected function setUp(): void
    {
        $this->userRepository         = $this->createMock(UserRepositoryInterface::class);
        $this->sessionManager         = $this->createMock(SessionManagerInterface::class);
        $this->loginAttemptRepository = $this->createMock(LoginAttemptRepositoryInterface::class);

        $this->service = new AuthService(
            $this->userRepository,
            $this->sessionManager,
            $this->loginAttemptRepository,
        );
    }


    // ── checkRateLimit ─────────────────────────────────────────────

    /**
     * checkRateLimit() doit retourner 0 si l'IP n'a aucune entrée en base.
     */
    public function testCheckRateLimitUnknownIpReturnsZero(): void
    {
        $this->loginAttemptRepository->method('deleteExpired');
        $this->loginAttemptRepository->method('findByIp')->willReturn(null);

        $result = $this->service->checkRateLimit('192.168.1.1');

        $this->assertSame(0, $result);
    }

    /**
     * checkRateLimit() doit retourner 0 si l'IP a des tentatives
     * mais n'est pas encore verrouillée (locked_until = null).
     */
    public function testCheckRateLimitNoLockReturnsZero(): void
    {
        $this->loginAttemptRepository->method('deleteExpired');
        $this->loginAttemptRepository->method('findByIp')->willReturn([
            'ip'           => '192.168.1.1',
            'attempts'     => 3,
            'locked_until' => null,
            'updated_at'   => date('Y-m-d H:i:s'),
        ]);

        $result = $this->service->checkRateLimit('192.168.1.1');

        $this->assertSame(0, $result);
    }

    /**
     * checkRateLimit() doit retourner le nombre de minutes restantes
     * si l'IP est actuellement verrouillée.
     */
    public function testCheckRateLimitLockedIpReturnsRemainingMinutes(): void
    {
        $lockedUntil = date('Y-m-d H:i:s', time() + 10 * 60);

        $this->loginAttemptRepository->method('deleteExpired');
        $this->loginAttemptRepository->method('findByIp')->willReturn([
            'ip'           => '192.168.1.1',
            'attempts'     => 5,
            'locked_until' => $lockedUntil,
            'updated_at'   => date('Y-m-d H:i:s'),
        ]);

        $result = $this->service->checkRateLimit('192.168.1.1');

        $this->assertGreaterThan(0, $result);
        $this->assertLessThanOrEqual(15, $result);
    }

    /**
     * checkRateLimit() doit retourner au minimum 1 minute
     * même si le verrouillage expire dans quelques secondes.
     */
    public function testCheckRateLimitReturnsAtLeastOneMinute(): void
    {
        $lockedUntil = date('Y-m-d H:i:s', time() + 30);

        $this->loginAttemptRepository->method('deleteExpired');
        $this->loginAttemptRepository->method('findByIp')->willReturn([
            'ip'           => '192.168.1.1',
            'attempts'     => 5,
            'locked_until' => $lockedUntil,
            'updated_at'   => date('Y-m-d H:i:s'),
        ]);

        $result = $this->service->checkRateLimit('192.168.1.1');

        $this->assertSame(1, $result);
    }

    /**
     * checkRateLimit() doit retourner 0 si le verrouillage est expiré.
     */
    public function testCheckRateLimitExpiredLockReturnsZero(): void
    {
        $lockedUntil = date('Y-m-d H:i:s', time() - 60);

        $this->loginAttemptRepository->method('deleteExpired');
        $this->loginAttemptRepository->method('findByIp')->willReturn([
            'ip'           => '192.168.1.1',
            'attempts'     => 5,
            'locked_until' => $lockedUntil,
            'updated_at'   => date('Y-m-d H:i:s'),
        ]);

        $result = $this->service->checkRateLimit('192.168.1.1');

        $this->assertSame(0, $result);
    }

    /**
     * checkRateLimit() doit toujours appeler deleteExpired() avant la vérification.
     */
    public function testCheckRateLimitCallsDeleteExpired(): void
    {
        $this->loginAttemptRepository
            ->expects($this->once())
            ->method('deleteExpired');

        $this->loginAttemptRepository->method('findByIp')->willReturn(null);

        $this->service->checkRateLimit('192.168.1.1');
    }


    // ── recordFailure ──────────────────────────────────────────────

    /**
     * recordFailure() doit déléguer avec MAX_ATTEMPTS = 5 et LOCK_MINUTES = 15.
     */
    public function testRecordFailureDelegatesWithConstants(): void
    {
        $this->loginAttemptRepository
            ->expects($this->once())
            ->method('recordFailure')
            ->with('192.168.1.1', 5, 15);

        $this->service->recordFailure('192.168.1.1');
    }

    /**
     * recordFailure() doit transmettre l'adresse IP exacte au dépôt.
     */
    public function testRecordFailurePassesIpAddress(): void
    {
        $ip = '10.0.0.42';

        $this->loginAttemptRepository
            ->expects($this->once())
            ->method('recordFailure')
            ->with($ip, $this->anything(), $this->anything());

        $this->service->recordFailure($ip);
    }


    // ── resetRateLimit ─────────────────────────────────────────────

    /**
     * resetRateLimit() doit appeler resetForIp() avec l'adresse IP fournie.
     */
    public function testResetRateLimitCallsResetForIp(): void
    {
        $ip = '192.168.1.1';

        $this->loginAttemptRepository
            ->expects($this->once())
            ->method('resetForIp')
            ->with($ip);

        $this->service->resetRateLimit($ip);
    }

    /**
     * resetRateLimit() ne doit pas appeler recordFailure() ni deleteExpired().
     */
    public function testResetRateLimitCallsNothingElse(): void
    {
        $this->loginAttemptRepository->expects($this->never())->method('recordFailure');
        $this->loginAttemptRepository->expects($this->never())->method('deleteExpired');
        $this->loginAttemptRepository->method('resetForIp');

        $this->service->resetRateLimit('192.168.1.1');
    }
}