Fixed unit tests

src/file-processor/app/main.py

@@ -10,6 +10,8 @@ from pydantic import BaseModel
 import redis
 from celery import Celery
 
+from database.connection import test_database_connection
+
 # Initialize FastAPI app
 app = FastAPI(
   title="MyDocManager File Processor",
@@ -68,6 +70,12 @@ async def health_check():
       health_status["dependencies"]["redis"] = "disconnected"
       health_status["status"] = "degraded"
   
+  # check MongoDB connection
+  if test_database_connection():
+    health_status["dependencies"]["mongodb"] = "connected"
+  else:
+    health_status["dependencies"]["mongodb"] = "disconnected"
+  
   return health_status