ritchie46 commented on a change in pull request #9778:
URL: https://github.com/apache/arrow/pull/9778#discussion_r603314361
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File path: rust/arrow-pyarrow-integration-testing/tests/test_sql.py
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@@ -78,3 +78,23 @@ def test_time32_python(self):
del expected
# No leak of C++ memory
self.assertEqual(old_allocated, pyarrow.total_allocated_bytes())
+
+ def test_list_array(self):
+ """
+ Python -> Rust -> Python
+ """
+ old_allocated = pyarrow.total_allocated_bytes()
+ a = pyarrow.array([[1, 2], [1, 2]], pyarrow.list_(pyarrow.int64()))
+ b = arrow_pyarrow_integration_testing.round_trip(a)
+ # list equality does not work, so we check the elements
Review comment:
> Well, then you can also add `assert a.type == b.type` to check if the
nullable flag is correctly set.
This fails. So my question is, is this due to the code in this PR (i.e. on
the Rust side). If so, than I need a bit of guidance on where I should fix/set
this flag (or not)?
And more general, what is the use of this flag?
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