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// vim: syntax=cpp
/*
 * Copyright (C) 2007-2014 Xagasoft, All rights reserved.
 *
 * This file is part of the libbu++ library and is released under the
 * terms of the license contained in the file LICENSE.
 */

#include "bu/membuf.h"
#include "bu/substream.h"

suite SubStream
{
    test testRead01
    {
        Bu::MemBuf mb("abcdefghijklmnopqrstuvwxyz");
        mb.seek( 4 );
        Bu::SubStream ss( mb, 10 );
        unitTest( ss.readLine() == "efghijklmn" );
    }

    test testRead02
    {
        Bu::MemBuf mb("abcdefghijklmnopqrstuvwxyz");
        mb.seek( 4 );
        Bu::SubStream ss( mb, 10 );
        char buf[8];
        size_t iRead = ss.read( buf, 8 );
        unitTest( iRead == 8 );
        unitTest( strncmp( buf, "efghijkl", 8 ) == 0 );
        unitTest( !ss.isEos() );
        iRead = ss.read( buf, 8 );
        unitTest( iRead == 2 );
        unitTest( strncmp( buf, "mn", 2 ) == 0 );
        unitTest( ss.isEos() );
    }

    test testRead03
    {
        Bu::MemBuf mb("abcdefghijklmnopqrstuvwxyz");
        mb.seek( 20 );
        Bu::SubStream ss( mb, 10 );
        char buf[8];
        size_t iRead = ss.read( buf, 8 );
        unitTest( iRead == 6 );
        unitTest( strncmp( buf, "uvwxyz", 6 ) == 0 );
        unitTest( ss.isEos() );
        iRead = ss.read( buf, 8 );
        unitTest( iRead == 0 );
        unitTest( ss.isEos() );
    }
}