test updates to take into account exception management

app/exceptions/handler.py

@@ -90,7 +90,10 @@ def setup_exception_handlers(app):
         for error in exc.errors():
             clean_error = {}
             for key, value in error.items():
-                if key == 'ctx' and isinstance(value, dict):
+                if key == 'input' and isinstance(value, bytes):
+                    # Convert bytes to string representation for JSON serialization
+                    clean_error[key] = f"<bytes: {len(value)} bytes>"
+                elif key == 'ctx' and isinstance(value, dict):
                     # Handle the 'ctx' field that contains ValueError objects
                     clean_ctx = {}
                     for ctx_key, ctx_value in value.items():
@@ -99,6 +102,9 @@ def setup_exception_handlers(app):
                         else:
                             clean_ctx[ctx_key] = ctx_value
                     clean_error[key] = clean_ctx
+                elif isinstance(value, bytes):
+                    # Handle any other bytes objects
+                    clean_error[key] = f"<bytes: {len(value)} bytes>"
                 else:
                     clean_error[key] = value
             clean_errors.append(clean_error)
@@ -138,6 +144,23 @@ def setup_exception_handlers(app):
             }
         )
 
+    @app.exception_handler(404)
+    async def not_found_handler(request: Request, exc):
+        """Handle all 404 errors with consistent format."""
+        logger.warning(f"404 Not Found: {request.method} {request.url}")
+
+        return JSONResponse(
+            status_code=404,
+            content={
+                "error_code": "ENDPOINT_NOT_FOUND",
+                "message": f"Endpoint not found: {request.url.path}",
+                "status_code": 404,
+                "details": {
+                    "path": request.url.path,
+                    "method": request.method
+                }
+            }
+        )
 
 # Utility functions for common exception scenarios
 def raise_not_found(resource_type: str, identifier: str) -> None: