feat(B-RL): Rate-Limiting Konsistenz — zentrale Policies für Auth/AI/Upload/Webhook
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B-RL: Rate-Limiting auf zentrale check_rate_limit() umgestellt - forgejo_error_reporter: In-Memory → zentrale Redis-Rate-Limit - ai_proactive: eigene Redis-Logik → zentrale check_rate_limit() - agent_runner: DB-basiertes Limit bleibt (zählt echte Ausführungen) - RateLimitPolicy Enum (AUTH/AI/UPLOAD/WEBHOOK) + check_rate_limit_policy() - 8 neue config.py Settings für Policy-Limits - 12 Routes mit Policies versehen (login, password-reset, AI, uploads, webhooks) Tests: 20 Tests in test_rate_limit_policies.py — alle grün - Policies, check_rate_limit, reset, get_client_ip, forgejo, ai_proactive - Keine Regression: 116 bestehende Tests grün
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"""Tests for unified rate-limit policies and central check_rate_limit().
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Covers:
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- check_rate_limit() with various policies (AUTH, AI, UPLOAD, WEBHOOK)
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- Rate limit triggers on exceeding max attempts
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- Reset after window timeout (in-memory fallback)
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- get_client_ip() with and without trusted proxy
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- Forgejo error reporter uses central check_rate_limit()
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- AI proactive is_rate_limited() delegates to central check_rate_limit()
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"""
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from __future__ import annotations
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import asyncio
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import uuid
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from unittest.mock import AsyncMock, MagicMock, patch
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import pytest
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from fastapi import HTTPException, Request
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from starlette.datastructures import Headers
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from app.core.rate_limit import (
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RateLimitPolicy,
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check_rate_limit,
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check_rate_limit_policy,
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get_client_ip,
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reset_rate_limit,
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)
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# ─── Unit Tests: RateLimitPolicy ───
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@pytest.mark.asyncio
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async def test_rate_limit_policy_auth_limits():
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"""RateLimitPolicy.AUTH returns (rate_limit_auth_max, rate_limit_auth_window)."""
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max_attempts, window = RateLimitPolicy.AUTH.limits()
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assert max_attempts == 5
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assert window == 300
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@pytest.mark.asyncio
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async def test_rate_limit_policy_ai_limits():
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"""RateLimitPolicy.AI returns (rate_limit_ai_max, rate_limit_ai_window)."""
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max_attempts, window = RateLimitPolicy.AI.limits()
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assert max_attempts == 20
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assert window == 60
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@pytest.mark.asyncio
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async def test_rate_limit_policy_upload_limits():
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"""RateLimitPolicy.UPLOAD returns (rate_limit_upload_max, rate_limit_upload_window)."""
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max_attempts, window = RateLimitPolicy.UPLOAD.limits()
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assert max_attempts == 30
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assert window == 60
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@pytest.mark.asyncio
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async def test_rate_limit_policy_webhook_limits():
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"""RateLimitPolicy.WEBHOOK returns (rate_limit_webhook_max, rate_limit_webhook_window)."""
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max_attempts, window = RateLimitPolicy.WEBHOOK.limits()
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assert max_attempts == 100
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assert window == 60
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# ─── Unit Tests: check_rate_limit via in-memory fallback ───
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def _force_inmemory_fallback():
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"""Return a context manager that patches the circuit breaker to force in-memory fallback."""
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circuit = MagicMock()
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circuit.can_proceed = AsyncMock(return_value=False)
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circuit.record_success = AsyncMock()
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circuit.record_failure = AsyncMock()
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return patch("app.core.resilience.get_circuit", return_value=circuit)
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@pytest.mark.asyncio
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async def test_check_rate_limit_allows_under_max():
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"""check_rate_limit allows requests up to max_attempts."""
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key = f"test:allow:{uuid.uuid4()}"
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with _force_inmemory_fallback():
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for _ in range(3):
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await check_rate_limit(key, max_attempts=3, window_seconds=60)
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@pytest.mark.asyncio
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async def test_check_rate_limit_blocks_on_exceed():
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"""check_rate_limit raises 429 when max_attempts is exceeded."""
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key = f"test:block:{uuid.uuid4()}"
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with _force_inmemory_fallback():
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for _ in range(2):
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await check_rate_limit(key, max_attempts=2, window_seconds=60)
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with pytest.raises(HTTPException) as exc_info:
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await check_rate_limit(key, max_attempts=2, window_seconds=60)
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assert exc_info.value.status_code == 429
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@pytest.mark.asyncio
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async def test_check_rate_limit_reset_after_window():
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"""Rate limit resets after the window timeout (in-memory fallback)."""
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key = f"test:reset:{uuid.uuid4()}"
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with _force_inmemory_fallback():
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# Use up the limit with a very short window
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await check_rate_limit(key, max_attempts=1, window_seconds=1)
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with pytest.raises(HTTPException):
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await check_rate_limit(key, max_attempts=1, window_seconds=1)
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# Wait for window to expire
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await asyncio.sleep(1.1)
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# Should be allowed again
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await check_rate_limit(key, max_attempts=1, window_seconds=1)
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@pytest.mark.asyncio
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async def test_reset_rate_limit_clears_counter():
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"""reset_rate_limit clears the counter so subsequent calls succeed."""
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key = f"test:reset2:{uuid.uuid4()}"
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with _force_inmemory_fallback():
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await check_rate_limit(key, max_attempts=1, window_seconds=60)
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with pytest.raises(HTTPException):
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await check_rate_limit(key, max_attempts=1, window_seconds=60)
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await reset_rate_limit(key)
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await check_rate_limit(key, max_attempts=1, window_seconds=60)
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# ─── Unit Tests: check_rate_limit_policy ───
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@pytest.mark.asyncio
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async def test_check_rate_limit_policy_auth():
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"""check_rate_limit_policy with AUTH policy enforces auth limits."""
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key = f"test:policy:auth:{uuid.uuid4()}"
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with _force_inmemory_fallback():
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max_attempts, _ = RateLimitPolicy.AUTH.limits()
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for _ in range(max_attempts):
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await check_rate_limit_policy(key, RateLimitPolicy.AUTH)
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with pytest.raises(HTTPException) as exc_info:
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await check_rate_limit_policy(key, RateLimitPolicy.AUTH)
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assert exc_info.value.status_code == 429
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@pytest.mark.asyncio
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async def test_check_rate_limit_policy_ai():
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"""check_rate_limit_policy with AI policy enforces AI limits."""
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key = f"test:policy:ai:{uuid.uuid4()}"
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with _force_inmemory_fallback():
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max_attempts, _ = RateLimitPolicy.AI.limits()
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for _ in range(max_attempts):
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await check_rate_limit_policy(key, RateLimitPolicy.AI)
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with pytest.raises(HTTPException) as exc_info:
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await check_rate_limit_policy(key, RateLimitPolicy.AI)
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assert exc_info.value.status_code == 429
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# ─── Unit Tests: get_client_ip ───
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def _make_request(client_host: str = "127.0.0.1", headers: dict | None = None) -> Request:
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"""Build a mock Request for get_client_ip testing."""
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scope = {
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"type": "http",
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"method": "GET",
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"path": "/",
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"headers": Headers(headers or {}).raw,
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"client": (client_host, 8000),
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}
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return Request(scope)
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def test_get_client_ip_no_trusted_proxy():
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"""get_client_ip returns direct IP when no trusted proxies configured."""
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with patch("app.config.get_settings") as mock_settings:
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settings = MagicMock()
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settings.trusted_proxy_cidrs = ""
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mock_settings.return_value = settings
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req = _make_request("192.168.1.100", {"x-forwarded-for": "10.0.0.1"})
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ip = get_client_ip(req)
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assert ip == "192.168.1.100"
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def test_get_client_ip_with_trusted_proxy():
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"""get_client_ip uses X-Forwarded-For when direct client is a trusted proxy."""
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with patch("app.config.get_settings") as mock_settings:
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settings = MagicMock()
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settings.trusted_proxy_cidrs = "10.0.0.0/8"
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mock_settings.return_value = settings
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req = _make_request("10.0.0.1", {"x-forwarded-for": "203.0.113.50"})
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ip = get_client_ip(req)
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assert ip == "203.0.113.50"
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def test_get_client_ip_trusted_proxy_uses_x_real_ip():
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"""get_client_ip falls back to X-Real-IP when X-Forwarded-For is absent."""
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with patch("app.config.get_settings") as mock_settings:
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settings = MagicMock()
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settings.trusted_proxy_cidrs = "10.0.0.0/8"
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mock_settings.return_value = settings
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req = _make_request("10.0.0.1", {"x-real-ip": "203.0.113.99"})
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ip = get_client_ip(req)
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assert ip == "203.0.113.99"
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def test_get_client_ip_untrusted_proxy_ignored():
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"""get_client_ip ignores X-Forwarded-For from untrusted proxy."""
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with patch("app.config.get_settings") as mock_settings:
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settings = MagicMock()
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settings.trusted_proxy_cidrs = "10.0.0.0/8"
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mock_settings.return_value = settings
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req = _make_request("192.168.1.1", {"x-forwarded-for": "203.0.113.50"})
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ip = get_client_ip(req)
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assert ip == "192.168.1.1"
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def test_get_client_ip_multiple_forwarded():
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"""get_client_ip uses leftmost IP from comma-separated X-Forwarded-For."""
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with patch("app.config.get_settings") as mock_settings:
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settings = MagicMock()
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settings.trusted_proxy_cidrs = "10.0.0.0/8"
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mock_settings.return_value = settings
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req = _make_request("10.0.0.1", {"x-forwarded-for": "203.0.113.50, 10.0.0.2, 10.0.0.3"})
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ip = get_client_ip(req)
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assert ip == "203.0.113.50"
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# ─── Integration Tests: Forgejo reporter uses central rate limit ───
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@pytest.mark.asyncio
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async def test_forgejo_reporter_uses_central_rate_limit():
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"""Forgejo error reporter delegates to check_rate_limit() and respects limits."""
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from app.plugins.builtins.forgejo_error_reporter.service import (
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_RATE_LIMIT_MAX,
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_RATE_LIMIT_WINDOW,
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report_error_to_forgejo,
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)
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assert _RATE_LIMIT_MAX == 10
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assert _RATE_LIMIT_WINDOW == 300
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call_count = 0
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async def mock_check_rate_limit(redis_key, max_attempts, window_seconds):
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nonlocal call_count
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call_count += 1
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assert redis_key == "rate:forgejo_report:global"
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assert max_attempts == 10
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assert window_seconds == 300
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if call_count > _RATE_LIMIT_MAX:
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raise HTTPException(status_code=429, detail="Rate limit exceeded")
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with patch(
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"app.plugins.builtins.forgejo_error_reporter.service._is_duplicate",
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new_callable=AsyncMock,
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return_value=False,
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), patch(
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"app.plugins.builtins.forgejo_error_reporter.service._get_settings",
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return_value={
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"url": "https://forgejo.example.com",
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"token": "test-token",
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"owner": "test",
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"repo": "test",
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},
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), patch(
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"app.core.rate_limit.check_rate_limit",
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side_effect=mock_check_rate_limit,
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):
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entry = {"message": "Test error", "stack": "trace"}
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for i in range(_RATE_LIMIT_MAX):
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await report_error_to_forgejo(entry)
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assert call_count == i + 1
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result = await report_error_to_forgejo(entry)
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assert result is False
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assert call_count == _RATE_LIMIT_MAX + 1
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# ─── Integration Tests: AI proactive uses central rate limit ───
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@pytest.mark.asyncio
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async def test_ai_proactive_uses_central_rate_limit():
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"""AI proactive is_rate_limited() delegates to check_rate_limit()."""
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from app.plugins.builtins.ai_proactive.services import is_rate_limited
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tenant_id = uuid.uuid4()
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user_id = uuid.uuid4()
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rate_limit_seconds = 5
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# First call should not be rate-limited
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result = await is_rate_limited(tenant_id, user_id, rate_limit_seconds)
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assert result is False
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# Second call (within window) should be rate-limited
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result = await is_rate_limited(tenant_id, user_id, rate_limit_seconds)
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assert result is True
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@pytest.mark.asyncio
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async def test_ai_proactive_rate_limit_key_format():
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"""AI proactive uses the correct Redis key format: rate:ai_proactive:{tenant_id}:{user_id}."""
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tenant_id = uuid.uuid4()
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user_id = uuid.uuid4()
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expected_key = f"rate:ai_proactive:{tenant_id}:{user_id}"
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captured_key = None
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async def mock_check_rate_limit(redis_key, max_attempts, window_seconds):
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nonlocal captured_key
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captured_key = redis_key
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assert max_attempts == 1
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assert window_seconds == 10
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with patch("app.core.rate_limit.check_rate_limit", side_effect=mock_check_rate_limit):
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from app.plugins.builtins.ai_proactive.services import is_rate_limited
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await is_rate_limited(tenant_id, user_id, rate_limit_seconds=10)
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assert captured_key == expected_key
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@pytest.mark.asyncio
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async def test_ai_proactive_rate_limit_exception_allows():
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"""AI proactive allows request when rate limit check raises non-HTTP exception."""
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with patch("app.core.rate_limit.check_rate_limit", side_effect=RuntimeError("Redis down")):
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from app.plugins.builtins.ai_proactive.services import is_rate_limited
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result = await is_rate_limited(uuid.uuid4(), uuid.uuid4(), rate_limit_seconds=10)
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assert result is False
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# ─── Integration Tests: Independent keys per user/tenant ───
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@pytest.mark.asyncio
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async def test_independent_rate_limit_keys():
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"""Different keys have independent rate limits."""
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key1 = f"test:indep:1:{uuid.uuid4()}"
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key2 = f"test:indep:2:{uuid.uuid4()}"
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with _force_inmemory_fallback():
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await check_rate_limit(key1, max_attempts=1, window_seconds=60)
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with pytest.raises(HTTPException):
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await check_rate_limit(key1, max_attempts=1, window_seconds=60)
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# key2 should still be allowed
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await check_rate_limit(key2, max_attempts=1, window_seconds=60)
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