fixed tests

backend/app/utils/ip_utils.py

@@ -61,17 +61,20 @@ def normalise_ip(address: str) -> str:
     IPv4-mapped IPv6 addresses (e.g. ``::ffff:192.168.1.1``) are converted
     to their IPv4 equivalent (``192.168.1.1``).
     Plain IPv4 addresses are returned unchanged.
+    Non-IP strings (e.g. ``testclient``) are returned unchanged so that
+    test clients and Unix-domain socket identifiers pass through safely.
 
     Args:
-        address: A valid IP address string.
+        address: An IP address string or other identifier.
 
     Returns:
-        Normalised IP address string.
-
-    Raises:
-        ValueError: If *address* is not a valid IP address.
+        Normalised IP address string, or the original value if it is not
+        a valid IP address.
     """
-    ip = ipaddress.ip_address(address)
+    try:
+        ip = ipaddress.ip_address(address)
+    except ValueError:
+        return address
     if isinstance(ip, ipaddress.IPv6Address) and ip.ipv4_mapped:
         return str(ip.ipv4_mapped)
     return str(ip)
@@ -129,13 +132,7 @@ def is_private_ip(address: str) -> bool:
         ValueError: If *address* is not a valid IP address.
     """
     ip = ipaddress.ip_address(address)
-    return (
-        ip.is_private
-        or ip.is_loopback
-        or ip.is_link_local
-        or ip.is_multicast
-        or ip.is_reserved
-    )
+    return ip.is_private or ip.is_loopback or ip.is_link_local or ip.is_multicast or ip.is_reserved
 
 
 async def validate_blocklist_url(url: str) -> None:
@@ -165,9 +162,7 @@ async def validate_blocklist_url(url: str) -> None:
         raise ValueError(f"Invalid URL format: {exc}") from exc
 
     if parsed.scheme not in ("http", "https"):
-        raise ValueError(
-            f"Invalid scheme '{parsed.scheme}': only http and https are allowed"
-        )
+        raise ValueError(f"Invalid scheme '{parsed.scheme}': only http and https are allowed")
 
     if not parsed.hostname:
         raise ValueError("URL has no hostname")
@@ -201,14 +196,9 @@ async def validate_blocklist_url(url: str) -> None:
             # connection time, and host mode is never used in production.
             if is_private_ip(ip_str):
                 import os
-                if (
-                    os.getenv("BANGUI_LOG_LEVEL") == "debug"
-                    and ipaddress.ip_address(ip_str).is_loopback
-                ):
+
+                if os.getenv("BANGUI_LOG_LEVEL") == "debug" and ipaddress.ip_address(ip_str).is_loopback:
                     continue
-                raise ValueError(
-                    f"Hostname '{hostname}' resolves to private/reserved IP: {ip_str}"
-                )
+                raise ValueError(f"Hostname '{hostname}' resolves to private/reserved IP: {ip_str}")
         except ipaddress.AddressValueError as exc:
             raise ValueError(f"Invalid IP address: {ip_str}") from exc
-