src/unit/membuf.unit


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// vim: syntax=cpp
/*
 * Copyright (C) 2007-2023 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"

suite MemBuf
{
    test testWriteRead01
    {
        Bu::MemBuf mb;
        unitTest( mb.write("ab", 2 ) == 2 );
        unitTest( mb.write("cde", 3 ) == 3 );
        unitTest( mb.write("FG", 2 ) == 2 );

        mb.setPos( 0 );

        char buf[8];
        buf[7] = '\0';
        unitTest( mb.read( buf, 7 ) == 7 );
        unitTest( !strncmp( buf, "abcdeFG", 7 ) );
        unitTest( mb.read( buf, 7 ) == 0 );
        mb.seek( -3 );
        unitTest( mb.read( buf, 7 ) == 3 );
        unitTest( !strncmp( buf, "eFG", 3 ) );
    }

    test testOverwrite1
    {
        Bu::MemBuf mb;
        unitTest( mb.write("0123456789") == 10 );
        mb.setPos( 4 );
        unitTest( mb.write("-5-") == 3 );
        mb.setPos( 9 );
        mb.write("Hey!!!");
        unitTest( mb.tell() == 15 );
        char buf[50];
        mb.setPos( 0 );
        buf[mb.read( buf, 50 )] = '\0';
        unitTest( !strcmp( buf, "0123-5-78Hey!!!" ) );
    }
}