fix

Author: jentyk

mpt_api_client/http/client_utils.py

@@ -2,18 +2,18 @@
 from typing import Any
 from urllib.parse import urlsplit, urlunparse
 
-INVALID_ENV_URL_MESSAGE = "Invalid base URL. Expected scheme://host[:port]"
+INVALID_ENV_URL_MESSAGE = (
+    "Base URL is required. "
+    "Set it up as env variable MPT_URL or pass it as `base_url` "
+    "argument to MPTClient. Expected format scheme://host[:port]"
+)
 PATH_TO_REMOVE_RE = re.compile(r"^/$|^/public/?$|^/public/v1/?$")
 
 
 def validate_base_url(base_url: Any) -> str:
     """Validate base url."""
     if not base_url or not isinstance(base_url, str):
-        raise ValueError(
-            "Base URL is required. "
-            "Set it up as env variable MPT_URL or pass it as `base_url` "
-            "argument to MPTClient."
-        )
+        raise ValueError(INVALID_ENV_URL_MESSAGE)
     split_result = urlsplit(base_url, scheme="https")
     if split_result.scheme and split_result.hostname:
         host = (