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package org.spongycastle.util.io.test;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.security.SecureRandom;
import org.spongycastle.util.io.BufferingOutputStream;
import org.spongycastle.util.test.SimpleTest;
public class BufferingOutputStreamTest
extends SimpleTest
{
public String getName()
{
return "BufferingStreamTest";
}
public void performTest()
throws Exception
{
SecureRandom random = new SecureRandom();
for (int i = 1; i != 256; i++)
{
byte[] data = new byte[i];
random.nextBytes(data);
checkStream(data, 16);
checkStream(data, 33);
checkStream(data, 128);
}
}
private void checkStream(byte[] data, int bufsize)
throws IOException
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BufferingOutputStream bfOut = new BufferingOutputStream(bOut, bufsize);
for (int i = 0; i != 10; i++)
{
bfOut.write(data[0]);
bfOut.write(data, 1, data.length - 1);
}
bfOut.close();
byte[] output = bOut.toByteArray();
for (int i = 0; i != 10; i++)
{
for (int j = 0; j != data.length; j++)
{
if (output[i * data.length + j] != data[j])
{
fail("data mismatch!");
}
}
}
}
public static void main(
String[] args)
{
runTest(new BufferingOutputStreamTest());
}
}
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