Function TEST

cpp/src/arrow/compute/kernels/vector_nested_test.cc:142–162

}

TEST(TestVectorNested, ListFlattenFixedSizeList) {
  for (auto ty : {fixed_size_list(int16(), 2), fixed_size_list(uint32(), 2)}) {
    const auto& out_ty = checked_cast<const FixedSizeListType&>(*ty).value_type();
    {
      auto input = ArrayFromJSON(ty, "[[0, null], null, [2, 3], [0, 42]]");
      auto expected = ArrayFromJSON(out_ty, "[0, null, 2, 3, 0, 42]");
      CheckVectorUnary("list_flatten", input, expected);
    }

    {
      // Test a chunked array
      auto input = ChunkedArrayFromJSON(ty, {"[[0, null], null]", "[[2, 3], [0, 42]]"});
      auto expected = ChunkedArrayFromJSON(out_ty, {"[0, null]", "[2, 3, 0, 42]"});
      CheckVectorUnary("list_flatten", input, expected);

      input = ChunkedArrayFromJSON(ty, {});
      expected = ChunkedArrayFromJSON(out_ty, {});
      CheckVectorUnary("list_flatten", input, expected);
    }
  }
}

TEST(TestVectorNested, ListFlattenFixedSizeListNulls) {
  const auto ty = fixed_size_list(int32(), 1);