fix: check AUTOREST_HOME directory is created if it doesn't exist

Author: ryuwd

diracx-testing/src/diracx/testing/client_generation.py

@@ -8,6 +8,7 @@
 import ast
 import importlib.util
 import json
+import os
 import shlex
 import subprocess
 import sys
@@ -165,6 +166,9 @@ def regenerate_client(openapi_spec: Path, client_module: str):
         f"--output-folder={client_root}",
     ]
 
+    if "AUTOREST_HOME" in os.environ:
+        os.makedirs(os.environ["AUTOREST_HOME"], exist_ok=True)
+
     # ruff: disable=S603
     subprocess.run(cmd, check=True)