ByteArrayInputStream input = new ByteArrayInputStream( (new String("hello there")).getBytes() );
SymbolTable symtab = new SymbolTable();
Lexer l = new Lexer(input, symtab);
assertTrue( l.token() > 255 );
assertTrue( l.token() > 255 );
assertEquals( -1, l.token() );
assertEquals(2, symtab.size() );
}