pitrou commented on a change in pull request #10101:
URL: https://github.com/apache/arrow/pull/10101#discussion_r621055767
##########
File path: python/pyarrow/tests/test_array.py
##########
@@ -688,6 +688,69 @@ def test_dictionary_from_numpy():
assert d2[i].as_py() == dictionary[indices[i]]
+def test_dictionary_to_numpy():
+ expected = pa.array(
+ ["foo", "bar", None, "foo"]
+ ).to_numpy(zero_copy_only=False)
+ a = pa.DictionaryArray.from_arrays(
+ pa.array([0, 1, None, 0]),
+ pa.array(['foo', 'bar'])
+ )
+ assert (a.to_numpy(zero_copy_only=False) == expected).all()
Review comment:
`np.testing` will provide more useful error messages.
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