Step 13 - completed

tests/conftest.py

@@ -6,15 +6,20 @@ a per-test session, and a FastAPI ``TestClient`` wired to use it.
 
 from __future__ import annotations
 
+import hashlib
 import json
+import os
 import time
 import uuid
 from collections.abc import AsyncGenerator, Generator
+from unittest.mock import patch
 
+import boto3
 import pytest
 import pytest_asyncio
 from fastapi.testclient import TestClient
 from jose import jwt
+from moto import mock_aws
 from sqlalchemy import StaticPool, event
 from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
 
@@ -206,3 +211,26 @@ def make_jwt(
 def auth_header(tier: str = "power", user_id: str | None = None) -> dict[str, str]:
     """Return an Authorization header dict for the given tier."""
     return {"Authorization": f"Bearer {make_jwt(tier, user_id)}"}
+
+
+# ── S3 mock fixture ──────────────────────────────────────────────────
+
+S3_TEST_BUCKET = "test-bucket"
+S3_TEST_REGION = "us-east-1"
+
+
+@pytest.fixture
+def s3_bucket():
+    """Create a mocked S3 bucket via moto and patch BlobStore settings."""
+    with mock_aws():
+        os.environ.setdefault("AWS_ACCESS_KEY_ID", "testing")
+        os.environ.setdefault("AWS_SECRET_ACCESS_KEY", "testing")
+        os.environ.setdefault("AWS_DEFAULT_REGION", S3_TEST_REGION)
+        client = boto3.client("s3", region_name=S3_TEST_REGION)
+        client.create_bucket(Bucket=S3_TEST_BUCKET)
+        with patch("app.storage.blob_store.settings") as mock_settings:
+            mock_settings.S3_BUCKET = S3_TEST_BUCKET
+            mock_settings.S3_REGION = S3_TEST_REGION
+            mock_settings.AWS_ACCESS_KEY_ID = "testing"
+            mock_settings.AWS_SECRET_ACCESS_KEY = "testing"
+            yield S3_TEST_BUCKET