[jruby-dev] [jira] (JRUBY-6389) TypeError: can't convert Pathname into String - JRuby in 1.9 mode not handling Pathname in $LOAD_PATH consistently with MRI

[Lenny Marks (JIRA)]

Lenny Marks created JRUBY-6389:
----------------------------------

             Summary: TypeError: can't convert Pathname into String - JRuby in 
1.9 mode not handling Pathname in $LOAD_PATH consistently with MRI
                 Key: JRUBY-6389
                 URL: https://jira.codehaus.org/browse/JRUBY-6389
             Project: JRuby
          Issue Type: Bug
    Affects Versions: JRuby 1.6.5, JRuby 1.6.4
         Environment: I'm on OS X 10.6 Java SE 1.6.0_24 (don't think it matters 
much)
            Reporter: Lenny Marks
            Assignee: Thomas E Enebo
         Attachments: test.rb

$ rvm use jruby
Using lenny/.rvm/gems/jruby-1.6.4
$ ruby ./test.rb 
TypeError: can't convert Pathname into String
  require at org/jruby/RubyKernel.java:1047
  require at 
lenny/.rvm/rubies/jruby-1.6.4/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29
   (root) at lenny/test.rb:3


$ rvm use 1.9.2
Using lenny/.rvm/gems/ruby-1.9.2-p290
bash-3.2$ ruby ./test.rb 
<internal:lib/rubygems/custom_require>:29:in `require': no such file to load -- 
foo (LoadError)
        from <internal:lib/rubygems/custom_require>:29:in `require'
        from lenny/test.rb:3:in `<main>'

Seems like others have run into this, but I didn't find any previous solutions 
or tickets:

http://www.google.com/search?q=TypeError:+can't+convert+Pathname+into+String

I ran into this while attempting to port a Rails 3 app from Ruby 1.8.7 to 1.9. 
Tough to track down because the stack trace is of little help when mixed up 
with Rails Dependencies loading, but I did eventually pin it at:

src/org/jruby/runtime/load/LoadService.java" line 1169 (as of commit a8652d580 
Thu Jan 26)
RubyString entryString = loadPath.eltInternal(i).convertToString();

In the case of a Pathname in the Loadpath it wound up invoking 
RubyBaseObject#convertToString

// org/jruby/RubyBasicObject.java
public RubyString convertToString() {
   return (RubyString) TypeConverter.convertToType(this, 
getRuntime().getString(), "to_str");
}

This monkey-patch to Pathname cleared it up for me:

require 'pathname'

Pathname.class_eval do
  def to_str
    to_s
  end
end









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