ritchie46 commented on a change in pull request #9778:
URL: https://github.com/apache/arrow/pull/9778#discussion_r602907300
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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:
Ok, I can confirm that `pyarrow` list equality works as expected.
The reason why list equality evaluated to false even though the values were
equal is due to a slight type difference. After the round trip the type has an
additional `not null` flag.
The not null indicatior is correct in this case. Is this problematic for
this PR @jorgecarleitao ?
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