From: Brian Mitchell <binary42@...>
Date: 2005-08-27T06:49:04+09:00
Subject: Re: stringio as file

On 8/26/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
> On 8/26/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
> > On 8/26/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
> > > StringIO can be used as a standin for a File object when testing, right?
> > >
> > > require 'stringio'
> > >
> > > def expects_file file
> > >   file.open
> > >   puts file.gets
> > > end
> > >
> > > s = StringIO.new "Hello World\nHow are you?"
> > > expects_file s
> > >
> > > What don't I understand here?
> >
> > Ah, nevermind.  I forgot File.open is a class method.
> 
> This still confuses me though:
> 
> require 'stringio'
> 
> a = StringIO.new
> a << "Hello\n"
> a << "World"
> 

 try something along the lines of:
a.rewind

> puts a.gets   # prints nil

I would recommend you check the rdocs and see a.methods.sort

Brian.