betodealmeida commented on code in PR #35481:
URL: https://github.com/apache/superset/pull/35481#discussion_r2402811948
##########
tests/unit_tests/charts/test_client_processing.py:
##########
@@ -2653,3 +2653,172 @@ def test_pivot_multi_level_index():
| ('Total (Sum)', '', '') | 210 | 105 |
0 |
""".strip()
)
+
+
+def test_apply_client_processing_csv_format_preserves_na_strings():
+ """
+ Test that apply_client_processing preserves "NA" strings
+ when REPORTS_CSV_NA_NAMES is set to empty list.
+ This ensures that scheduled reports can be configured to
+ preserve strings like "NA" as literal values.
+ """
+ from unittest.mock import patch
+
+ # CSV data with "NA" string that should be preserved
+ csv_data = "first_name,last_name\nJeff,Smith\nAlice,NA"
+
+ result = {
+ "queries": [
+ {
+ "result_format": ChartDataResultFormat.CSV,
+ "data": csv_data,
+ }
+ ]
+ }
+
+ form_data = {
+ "datasource": "1__table",
+ "viz_type": "table",
+ "slice_id": 1,
+ "url_params": {},
+ "metrics": [],
+ "groupby": [],
+ "columns": ["first_name", "last_name"],
+ "extra_form_data": {},
+ "force": False,
+ "result_format": "csv",
+ "result_type": "results",
+ }
+
+ # Test with REPORTS_CSV_NA_NAMES set to empty list (disable NA conversion)
+ with patch(
+ "superset.charts.client_processing.current_app.config.get"
+ ) as mock_config:
+ # Only mock the specific config key we're testing
+ def mock_get(key, default=None):
+ if key == "REPORTS_CSV_NA_NAMES":
+ return [] # Empty list disables NA conversion
+ return default
Review Comment:
You can use the `with_config` decorator here and other tests, eg:
```python
@with_config({"REPORTS_CSV_NA_NAMES": []})
def test_something(...):
...
```
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