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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.
test_that("RecordBatchFileWriter / RecordBatchFileReader roundtrips", {
tab <- Table$create(
int = 1:10,
dbl = as.numeric(1:10),
lgl = sample(c(TRUE, FALSE, NA), 10, replace = TRUE),
chr = letters[1:10]
)
tf <- tempfile()
expect_error(
RecordBatchFileWriter$create(tf, tab$schema),
"RecordBatchFileWriter$create() requires an Arrow InputStream. Try providing FileOutputStream$create(tf)",
fixed = TRUE
)
stream <- FileOutputStream$create(tf)
writer <- RecordBatchFileWriter$create(stream, tab$schema)
expect_r6_class(writer, "RecordBatchWriter")
writer$write_table(tab)
writer$close()
stream$close()
expect_equal(read_feather(tf, as_data_frame = FALSE), tab)
# Make sure connections are closed
expect_error(file.remove(tf), NA)
skip_on_os("windows") # This should pass, we've closed the stream
expect_false(file.exists(tf))
})
test_that("record_batch() handles (raw|Buffer|InputStream, Schema) (ARROW-3450, ARROW-3505)", {
tbl <- tibble::tibble(
int = 1:10, dbl = as.numeric(1:10),
lgl = sample(c(TRUE, FALSE, NA), 10, replace = TRUE),
chr = letters[1:10]
)
batch <- record_batch(!!!tbl)
schema <- batch$schema
raw <- batch$serialize()
batch2 <- record_batch(raw, schema = schema)
batch3 <- record_batch(buffer(raw), schema = schema)
stream <- BufferReader$create(raw)
stream$close()
expect_equal(batch, batch2)
expect_equal(batch, batch3)
})
test_that("record_batch() can handle (Message, Schema) parameters (ARROW-3499)", {
batch <- record_batch(x = 1:10)
schema <- batch$schema
raw <- batch$serialize()
stream <- BufferReader$create(raw)
message <- read_message(stream)
batch2 <- record_batch(message, schema = schema)
expect_equal(batch, batch2)
stream$close()
})
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