user_data_dir is PATH in config, not str

freqtrade/tests/conftest.py

@@ -234,7 +234,7 @@ def default_conf():
         },
         "initial_state": "running",
         "db_url": "sqlite://",
-        "user_data_dir": "user_data",
+        "user_data_dir": Path("user_data"),
         "verbosity": 3,
     }
     return configuration

freqtrade/tests/test_configuration.py

@@ -53,6 +53,7 @@ def test_load_config_incorrect_stake_amount(default_conf) -> None:
 
 
 def test_load_config_file(default_conf, mocker, caplog) -> None:
+    del default_conf['user_data_dir']
     file_mock = mocker.patch('freqtrade.configuration.configuration.open', mocker.mock_open(
         read_data=json.dumps(default_conf)
     ))