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# 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.
skip_on_os("windows")
skip_if_not_available("parquet")
skip_if_not_available("dataset")
library(dplyr, warn.conflicts = FALSE)
dataset_dir <- make_temp_dir()
test_that("Setup (putting data in the dir)", {
dir.create(file.path(dataset_dir, 1))
dir.create(file.path(dataset_dir, 2))
write_parquet(df1, file.path(dataset_dir, 1, "file1.parquet"))
write_parquet(df2, file.path(dataset_dir, 2, "file2.parquet"))
expect_length(dir(dataset_dir, recursive = TRUE), 2)
})
files <- c(
file.path(dataset_dir, 1, "file1.parquet", fsep = "/"),
file.path(dataset_dir, 2, "file2.parquet", fsep = "/")
)
test_that("dataset from single local file path", {
ds <- open_dataset(files[1])
expect_r6_class(ds, "Dataset")
expect_equal(
ds %>%
select(chr, dbl) %>%
filter(dbl > 7) %>%
collect() %>%
arrange(dbl),
df1[8:10, c("chr", "dbl")]
)
})
test_that("dataset from vector of file paths", {
ds <- open_dataset(files)
expect_r6_class(ds, "Dataset")
expect_equal(
ds %>%
select(chr, dbl) %>%
filter(dbl > 7 & dbl < 53L) %>%
collect() %>%
arrange(dbl),
rbind(
df1[8:10, c("chr", "dbl")],
df2[1:2, c("chr", "dbl")]
)
)
})
test_that("dataset from directory URI", {
uri <- paste0("file://", dataset_dir)
ds <- open_dataset(uri, partitioning = schema(part = uint8()))
expect_r6_class(ds, "Dataset")
expect_equal(
ds %>%
select(chr, dbl) %>%
filter(dbl > 7 & dbl < 53L) %>%
collect() %>%
arrange(dbl),
rbind(
df1[8:10, c("chr", "dbl")],
df2[1:2, c("chr", "dbl")]
)
)
})
test_that("dataset from single file URI", {
uri <- paste0("file://", files[1])
ds <- open_dataset(uri)
expect_r6_class(ds, "Dataset")
expect_equal(
ds %>%
select(chr, dbl) %>%
filter(dbl > 7) %>%
collect() %>%
arrange(dbl),
df1[8:10, c("chr", "dbl")]
)
})
test_that("dataset from vector of file URIs", {
uris <- paste0("file://", files)
ds <- open_dataset(uris)
expect_r6_class(ds, "Dataset")
expect_equal(
ds %>%
select(chr, dbl) %>%
filter(dbl > 7 & dbl < 53L) %>%
collect() %>%
arrange(dbl),
rbind(
df1[8:10, c("chr", "dbl")],
df2[1:2, c("chr", "dbl")]
)
)
})
test_that("open_dataset errors on mixed paths and URIs", {
expect_error(
open_dataset(c(files[1], paste0("file://", files[2]))),
"Vectors of mixed paths and URIs are not supported"
)
})
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