Raise ClientError when request fails when trying to log in

Author: wonder-sk

mergin/client.py

@@ -215,6 +215,9 @@ def login(self, login, password):
                 info = json.load(e)
                 raise LoginError(info.get("detail"))
             raise LoginError(e.read().decode("utf-8"))
+        except urllib.error.URLError as e:
+            # e.g. when DNS resolution fails (no internet connection?)
+            raise ClientError("Error trying to log in: " + str(e))
         self._auth_session = {
             "token": "Bearer %s" % session["token"],
             "expire": dateutil.parser.parse(session["expire"])