rspec users - Mar 2011 - Does RSpec interfere with Pathname#dirname or Pathname#realpath ?

Hi,
I starting a new project, and have run into behavior I cannot
replicate in irb, (i.e. outside of using rspec) when the directory?
returns true, so I thought I''d ask here, in case any one has seen this
badhavior.
ruby-1.9.2-p136
rspec (2.5.0)
rspec-core (2.5.1)
rspec-expectations (2.5.0)
rspec-mocks (2.5.0)

When I try to run this spec:

require Pathname(__FILE__).ascend { |d| h=d+''spec_helper.rb'';
break h
if h.file? }
describe B3::Bdd do
  it "should indicate RVM is installed locally" do
    B3::Bdd::Helpers.rvm_local_install?.should be_true
  end
end

The spec helper is: require ''rspec'' ; require_relative
''../lib/b3''

Which describes this code:

class B3
  module Bdd
    module Helpers
      def rvm_local_install?
        puts ENV[''rvm_path'']
        rvm_path = Pathname.new(ENV[''rvm_path''] ||
''~/.rvm'')
        rvm_path.dirname.realpath.directory?
      end
      module_function :rvm_local_install?
    end
  end
end


I get this error:

https://gist.github.com/853798

irb version:

$ irb
ruby-1.9.2-p136 :001 > require ''pathname'';
ruby-1.9.2-p136 :002 >
Dir.chdir(''/home/hedge/Documents/Workspaces/b3/spec/b3/'') do
ruby-1.9.2-p136 :003 >     pn=Pathname.new(ENV[''rvm_path'']
|| ''~/.rvm'')
ruby-1.9.2-p136 :004?>   puts pn.dirname.realpath.directory?
ruby-1.9.2-p136 :005?>   end
true
 => nil
ruby-1.9.2-p136 :006 > pn2=Pathname.new(ENV[''rvm_path''] ||
''~/.rvm'')
 => #<Pathname:/home/hedge/.rvm>
ruby-1.9.2-p136 :007 > puts pn2.dirname.realpath.directory?
true
 => nil

I''d appreciate any comments or insights.

-- 
????'' ??? ??????, ???'' ?????? ?? ????
[The fox knows many things, but the hedgehog knows one big thing.]
? Archilochus, Greek poet (c. 680 BC ? c. 645 BC)
http://wiki.hedgehogshiatus.com

On Fri, Mar 4, 2011 at 10:08 AM, Hedge Hog <hedgehogshiatus at gmail.com>
wrote:
> Hi,
> I starting a new project, and have run into behavior I cannot
> replicate in irb, (i.e. outside of using rspec) when the directory?
> returns true, so I thought I''d ask here, in case any one has seen
this
> badhavior.
> ruby-1.9.2-p136
> rspec (2.5.0)
> rspec-core (2.5.1)
> rspec-expectations (2.5.0)
> rspec-mocks (2.5.0)
>
> When I try to run this spec:
>
> require Pathname(__FILE__).ascend { |d|
h=d+''spec_helper.rb''; break h
> if h.file? }
> describe B3::Bdd do
> ?it "should indicate RVM is installed locally" do
> ? ?B3::Bdd::Helpers.rvm_local_install?.should be_true
> ?end
> end
>
> The spec helper is: require ''rspec'' ; require_relative
''../lib/b3''
>
> Which describes this code:
>
> class B3
> ?module Bdd
> ? ?module Helpers
> ? ? ?def rvm_local_install?
> ? ? ? ?puts ENV[''rvm_path'']
> ? ? ? ?rvm_path = Pathname.new(ENV[''rvm_path''] ||
''~/.rvm'')
> ? ? ? ?rvm_path.dirname.realpath.directory?
> ? ? ?end
> ? ? ?module_function :rvm_local_install?
> ? ?end
> ?end
> end
>
>
> I get this error:
>
> https://gist.github.com/853798
>
> irb version:
>
> $ irb
> ruby-1.9.2-p136 :001 > require ''pathname'';
> ruby-1.9.2-p136 :002 >
> Dir.chdir(''/home/hedge/Documents/Workspaces/b3/spec/b3/'')
do
> ruby-1.9.2-p136 :003 > ? ?
pn=Pathname.new(ENV[''rvm_path''] || ''~/.rvm'')
> ruby-1.9.2-p136 :004?> ? puts pn.dirname.realpath.directory?
> ruby-1.9.2-p136 :005?> ? end
> true
> ?=> nil
> ruby-1.9.2-p136 :006 >
pn2=Pathname.new(ENV[''rvm_path''] ||
''~/.rvm'')
> ?=> #<Pathname:/home/hedge/.rvm>
> ruby-1.9.2-p136 :007 > puts pn2.dirname.realpath.directory?
> true
> ?=> nil
>
> I''d appreciate any comments or insights.
>
> --
> ????'' ??? ??????, ???'' ?????? ?? ????
> [The fox knows many things, but the hedgehog knows one big thing.]
> ? Archilochus, Greek poet (c. 680 BC ? c. 645 BC)
> http://wiki.hedgehogshiatus.com
>
Actually the cause is that Pathname#realpath does not seem handle ~
very well.  Period. File#expand_path handles ~ fine:

pn=Pathname.new(''~/.rvm'')
ruby-1.9.2-p136 :020 > pn=Pathname.new(''~/.rvm'')
 => #<Pathname:~/.rvm>
ruby-1.9.2-p136 :021 > puts pn.realpath
Errno::ENOENT: No such file or directory - /home/hedge/~
	from /home/hedge/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/pathname.rb:446:in
`realpath''
	from /home/hedge/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/pathname.rb:446:in
`realpath''
	from (irb):21
	from /home/hedge/.rvm/rubies/ruby-1.9.2-p136/bin/irb:16:in
`<main>''


-- 
????'' ??? ??????, ???'' ?????? ?? ????
[The fox knows many things, but the hedgehog knows one big thing.]
? Archilochus, Greek poet (c. 680 BC ? c. 645 BC)
http://wiki.hedgehogshiatus.com