| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| test_that("string vectors with only empty strings and nulls don't allocate a data buffer (ARROW-3693)", { |
| a <- Array$create("") |
| expect_equal(a$length(), 1L) |
| |
| buffers <- a$data()$buffers |
| |
| # No nulls |
| expect_equal(buffers[[1]], NULL) |
| |
| # Offsets has 2 elements |
| expect_equal(buffers[[2]]$size, 8L) |
| |
| # As per ARROW-2744, values buffer should preferably be non-null. |
| expect_equal(buffers[[3]]$size, 0L) |
| expect_equal(buffers[[3]]$capacity, 0L) |
| }) |
