Fixed test_download_csv_failure test

tests/unit/utils/test_csv_processor.py

@@ -77,12 +77,13 @@ class TestCSVProcessor:
     @patch("requests.get")
     def test_download_csv_failure(self, mock_get):
         """Test CSV download failure"""
-        # Mock failed HTTP response
+        # Mock failed HTTP response - need to make raise_for_status() raise an exception
         mock_response = Mock()
         mock_response.status_code = 404
+        mock_response.raise_for_status.side_effect = requests.exceptions.HTTPError("404 Not Found")
         mock_get.return_value = mock_response
 
-        with pytest.raises(Exception):
+        with pytest.raises(requests.exceptions.HTTPError):
             self.processor.download_csv("http://example.com/nonexistent.csv")
 
     def test_parse_csv_content(self):