pitrou commented on code in PR #49950:
URL: https://github.com/apache/arrow/pull/49950#discussion_r3234974364
##########
python/pyarrow/tests/test_compute.py:
##########
@@ -1987,6 +1987,26 @@ def test_fill_null_array(arrow_type):
assert result.equals(expected)
+def test_replace_with_mask_null_type():
+ # GH-47447: replace_with_mask crashed for null type arrays
+ a = pa.array([None], pa.null())
+ b = pa.array([None], pa.null())
+
+ result = pc.replace_with_mask(a, True, b)
+ assert result.type == pa.null()
Review Comment:
Ok, but can you test the actual result values?
Something like:
```suggestion
assert result.type == pa.null()
result.validate(full=True)
assert result.to_pylist() == [None]
```
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