fixed the test for load_config even if a .env file is present

tests/test_dashboard_upload.py

@@ -4,19 +4,25 @@ from dashboards.upload import load_config_from_env
 from unittest.mock import patch
 import os
 
+
 def test_load_config_from_env():
     # Case 1: Test if function raises exception for missing GRAFANA_API_KEY
     with pytest.raises(ValueError) as e:
-        load_config_from_env(env_path=".env")
-    assert str(e.value) == "GRAFANA_API_KEY is None or not defined in the .env file"
+        load_config_from_env(env_path="")
+    assert str(
+        e.value) == "GRAFANA_API_KEY is None or not defined in the .env file"
 
     # Case 2: Test if function raises exception for missing GRAFANA_SERVER
     with patch.dict(os.environ, {"GRAFANA_API_KEY": "api_key"}):
         with pytest.raises(ValueError) as e:
-            load_config_from_env(env_path=".env")
-        assert str(e.value) == "GRAFANA_SERVER is None or not defined in the .env file"
+            load_config_from_env(env_path="")
+        assert str(
+            e.value) == "GRAFANA_SERVER is None or not defined in the .env file"
 
     # Case 3: Test if function returns expected values when both variables are defined
-    with patch.dict(os.environ, {"GRAFANA_API_KEY": "api_key", "GRAFANA_SERVER": "server_url"}):
+    with patch.dict(
+        os.environ, {"GRAFANA_API_KEY": "api_key",
+                     "GRAFANA_SERVER": "server_url"}
+    ):
         result = load_config_from_env(env_path=".env")
-        assert result == ("server_url", "api_key")
\ No newline at end of file
+        assert result == ("server_url", "api_key")