package com.fasterxml.jackson.core.io;
import java.io.*;
import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.io.IOContext;
import com.fasterxml.jackson.core.io.MergedStream;
import com.fasterxml.jackson.core.util.BufferRecycler;
public class TestMergedStream
extends com.fasterxml.jackson.core.BaseTest
{
public void testSimple() throws Exception
{
BufferRecycler rec = new BufferRecycler();
IOContext ctxt = new IOContext(rec, null, false);
// bit complicated; must use recyclable buffer...
byte[] first = ctxt.allocReadIOBuffer();
System.arraycopy("ABCDE".getBytes("UTF-8"), 0, first, 99, 5);
byte[] second = "FGHIJ".getBytes("UTF-8");
assertNull(ctxt.getSourceReference());
assertFalse(ctxt.isResourceManaged());
ctxt.setEncoding(JsonEncoding.UTF8);
MergedStream ms = new MergedStream(ctxt, new ByteArrayInputStream(second),
first, 99, 99+5);
// Ok, first, should have 5 bytes from first buffer:
assertEquals(5, ms.available());
// not supported when there's buffered stuff...
assertFalse(ms.markSupported());
// so this won't work, but shouldn't throw exception
ms.mark(1);
assertEquals((byte) 'A', ms.read());
assertEquals(3, ms.skip(3));
byte[] buffer = new byte[5];
/* Ok, now, code is allowed to return anywhere between 1 and 3,
* but we now it will return 1...
*/
assertEquals(1, ms.read(buffer, 1, 3));
assertEquals((byte) 'E', buffer[1]);
// So let's read bit more
assertEquals(3, ms.read(buffer, 0, 3));
assertEquals((byte) 'F', buffer[0]);
assertEquals((byte) 'G', buffer[1]);
assertEquals((byte) 'H', buffer[2]);
assertEquals(2, ms.available());
// And then skip the reset
assertEquals(2, ms.skip(200));
ms.close();
}
}