test: verify backup monitoring implementation

backend/src/media_library_viewer_api/models/backups.py

@@ -1,5 +1,6 @@
 from datetime import datetime
 from typing import Any
+
 from pydantic import BaseModel, Field, field_validator
 
 

backend/src/media_library_viewer_api/services/backup_alert_engine.py

@@ -24,7 +24,10 @@ def generate_alerts_for_run(
     # 2. Anomaly size alert
     bytes_transferred = run.get("bytes_transferred")
     if bytes_transferred is not None and previous_runs:
-        successful_runs = [r for r in previous_runs if r["status"] == "success" and r.get("bytes_transferred") is not None]
+        successful_runs = [
+            r for r in previous_runs
+            if r["status"] == "success" and r.get("bytes_transferred") is not None
+        ]
         if len(successful_runs) >= 3:
             sizes = [r["bytes_transferred"] for r in successful_runs[-7:]]
             median_size = statistics.median(sizes)
@@ -44,7 +47,10 @@ def generate_alerts_for_run(
                         "run_id": run["id"],
                         "alert_type": "anomaly_size",
                         "severity": "warning",
-                        "message": f"Backup job '{job_name}' size anomaly: {bytes_transferred} bytes (median: {median_size})",
+                        "message": (
+                            f"Backup job '{job_name}' size anomaly: "
+                            f"{bytes_transferred} bytes (median: {median_size})"
+                        ),
                     })
 
     # 3. Anomaly duration alert
@@ -60,7 +66,10 @@ def generate_alerts_for_run(
                     "run_id": run["id"],
                     "alert_type": "anomaly_duration",
                     "severity": "warning",
-                    "message": f"Backup job '{job_name}' duration anomaly: {duration_ms}ms (median: {median_duration}ms)",
+                    "message": (
+                        f"Backup job '{job_name}' duration anomaly: "
+                        f"{duration_ms}ms (median: {median_duration}ms)"
+                    ),
                 })
 
     return alerts
@@ -105,7 +114,10 @@ def check_missed_schedules(
                         "run_id": None,
                         "alert_type": "missed_schedule",
                         "severity": "warning",
-                        "message": f"Backup job '{job['name']}' missed schedule: last run at {last_run_time} (expected every {interval}s)",
+                        "message": (
+                        f"Backup job '{job['name']}' missed schedule: "
+                        f"last run at {last_run_time} (expected every {interval}s)"
+                    ),
                     })
 
     return alerts