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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.io;
import static org.junit.Assert.*;
import java.util.Arrays;
import java.util.zip.Deflater;
import org.junit.Before;
import org.junit.Test;
import com.yahoo.text.Utf8;
/**
* Check decompressor used among other things for packed summary fields.
*
* @author <a href="mailto:steinar@yahoo-inc.com">Steinar Knutsen</a>
*/
public class SlowInflateTestCase {
private String value;
private byte[] raw;
private byte[] output;
private byte[] compressed;
private int compressedDataLength;
@Before
public void setUp() throws Exception {
value = "000000000000000000000000000000000000000000000000000000000000000";
raw = Utf8.toBytesStd(value);
output = new byte[raw.length * 2];
Deflater compresser = new Deflater();
compresser.setInput(raw);
compresser.finish();
compressedDataLength = compresser.deflate(output);
compresser.end();
compressed = Arrays.copyOf(output, compressedDataLength);
}
@Test
public final void test() {
byte[] unpacked = new SlowInflate().unpack(compressed, raw.length);
assertArrayEquals(raw, unpacked);
}
@Test
public final void testCorruptData() {
compressed[0] = (byte) (compressed[0] ^ compressed[1]);
compressed[1] = (byte) (compressed[1] ^ compressed[2]);
compressed[2] = (byte) (compressed[2] ^ compressed[3]);
compressed[3] = (byte) (compressed[3] ^ compressed[4]);
boolean caught = false;
try {
new SlowInflate().unpack(compressed, raw.length);
} catch (RuntimeException e) {
caught = true;
}
assertTrue(caught);
}
}
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