1# Licensed to the Apache Software Foundation (ASF) under one
2# or more contributor license agreements.  See the NOTICE file
3# distributed with this work for additional information
4# regarding copyright ownership.  The ASF licenses this file
5# to you under the Apache License, Version 2.0 (the
6# "License"); you may not use this file except in compliance
7# with the License.  You may obtain a copy of the License at
8#
9#   http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing,
12# software distributed under the License is distributed on an
13# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14# KIND, either express or implied.  See the License for the
15# specific language governing permissions and limitations
16# under the License.
17
18test_that("codec_is_available", {
19  expect_true(codec_is_available("uncompressed")) # Always true
20  expect_match_arg_error(codec_is_available("sdfasdf"))
21  skip_if_not_available("gzip")
22  expect_true(codec_is_available("gzip"))
23  expect_true(codec_is_available("GZIP"))
24})
25
26if (identical(Sys.getenv("APPVEYOR"), "True")) {
27  test_that("Compression codecs are included in the Windows build", {
28    expect_true(codec_is_available("lz4"))
29    expect_true(codec_is_available("zstd"))
30  })
31}
32
33test_that("Codec attributes", {
34  skip_if_not_available("gzip")
35  cod <- Codec$create("gzip")
36  expect_equal(cod$name, "gzip")
37  # TODO: implement $level
38  expect_error(cod$level)
39})
40
41test_that("can write Buffer to CompressedOutputStream and read back in CompressedInputStream", {
42  skip_if_not_available("gzip")
43  buf <- buffer(as.raw(sample(0:255, size = 1024, replace = TRUE)))
44
45  tf1 <- tempfile()
46  stream1 <- CompressedOutputStream$create(tf1)
47  expect_equal(stream1$tell(), 0)
48  stream1$write(buf)
49  expect_equal(stream1$tell(), buf$size)
50  stream1$close()
51
52  tf2 <- tempfile()
53  sink2 <- FileOutputStream$create(tf2)
54  stream2 <- CompressedOutputStream$create(sink2)
55  expect_equal(stream2$tell(), 0)
56  stream2$write(buf)
57  expect_equal(stream2$tell(), buf$size)
58  stream2$close()
59  sink2$close()
60
61  input1 <- CompressedInputStream$create(tf1)
62  buf1 <- input1$Read(1024L)
63
64  file2 <- ReadableFile$create(tf2)
65  input2 <- CompressedInputStream$create(file2)
66  buf2 <- input2$Read(1024L)
67
68  expect_equal(buf, buf1)
69  expect_equal(buf, buf2)
70
71  unlink(tf1)
72  unlink(tf2)
73})
74