blob: c766c6e0c196335204a34fa1e59da899748938d2 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.compress;
import org.junit.jupiter.api.Test;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
/**
* @author bjorncs
*/
class ZstdOutputStreamTest {
@Test
void output_stream_compresses_input() throws IOException {
byte[] inputData = "The quick brown fox jumps over the lazy dog".getBytes();
ByteArrayOutputStream arrayOut = new ByteArrayOutputStream();
try (ZstdOutputStream zstdOut = new ZstdOutputStream(arrayOut, 12)) {
zstdOut.write(inputData[0]);
zstdOut.write(inputData, 1, inputData.length - 1);
}
byte[] compressedData = arrayOut.toByteArray();
ZstdCompressor compressor = new ZstdCompressor();
byte[] decompressedData = new byte[inputData.length];
compressor.decompress(compressedData, 0, compressedData.length, decompressedData, 0, decompressedData.length);
assertArrayEquals(inputData, decompressedData);
}
@Test
void compressed_size_is_less_than_uncompressed() throws IOException {
StringBuilder builder = new StringBuilder();
for (int i = 0; i < 100; i++) {
builder.append("The quick brown fox jumps over the lazy dog").append('\n');
}
byte[] inputData = builder.toString().getBytes();
ByteArrayOutputStream arrayOut = new ByteArrayOutputStream();
try (ZstdOutputStream zstdOut = new ZstdOutputStream(arrayOut)) {
zstdOut.write(inputData);
}
int compressedSize = arrayOut.toByteArray().length;
assertTrue(
compressedSize < inputData.length,
() -> "Compressed size is " + compressedSize + " while uncompressed size is " + inputData.length);
}
}
|
