TESTCASE( fread( refbuffer, 1, 2000, buffer ) == readcounter );
TESTCASE( fclose( buffer ) == 0 );
TESTCASE( memcmp( readbuffer, refbuffer, readcounter ) == 0 );
TESTCASE( fread( refbuffer, 1, 2000, buffer ) == readcounter );
TESTCASE( fclose( buffer ) == 0 );
TESTCASE( memcmp( readbuffer, refbuffer, readcounter ) == 0 );