rok commented on code in PR #50907:
URL: https://github.com/apache/arrow/pull/50907#discussion_r3846495808
##########
python/pyarrow/tests/test_sparse_tensor.py:
##########
@@ -254,6 +254,26 @@ def test_sparse_csr_matrix_from_dense(dtype_str,
arrow_type):
assert np.array_equal(indices, result_indices)
[email protected](not csr_matrix, reason="requires scipy")
[email protected]('pa_class', [
+ pa.SparseCSRMatrix,
+ pa.SparseCSCMatrix,
+])
+def test_sparse_csx_matrix_from_1d(pa_class):
+ array = np.array([1, 0, 2, 0, 0, 3, 0, 4], dtype=np.int64)
+ tensor = pa.Tensor.from_numpy(array)
+
+ scipy_matrix = csr_matrix(array)
+
+ sparse_tensor = pa_class.from_dense_numpy(array)
+ assert np.array_equal(sparse_tensor.to_tensor().to_numpy(),
+ scipy_matrix.toarray())
+
+ sparse_tensor = pa_class.from_tensor(tensor)
+ assert np.array_equal(sparse_tensor.to_tensor().to_numpy(),
+ scipy_matrix.toarray())
Review Comment:
This is redundant too.
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