Question

I am working with the Shopsense Ruby Gem however I am unable to use the gem. Making requests exactly as in the test I receive the following error:

/Users/rudolph9/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/net/http.rb:455:in `block in get_response': undefined method `request_uri' for #<URI::Generic:0x007fd5b3a66810> (NoMethodError)
    from /Users/rudolph9/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/net/http.rb:745:in `start'
    from /Users/rudolph9/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/net/http.rb:454:in `get_response'
    from /Users/rudolph9/.rvm/gems/ruby-1.9.3-p0/gems/Shopsense-0.1.1/lib/Shopsense.rb:76:in `do_search'
    from test_shopsense.rb:10:in `<main>'

However, the test works fine if I clone the repository, modify the test and require the source directly as follows:

1 #!/usr/bin/env ruby¬                                                                                                                                                       
2 require 'rubygems'¬
3 #require 'Shopsense'¬
4 require '../lib/shopsense.rb'¬
.
.
.

What is the issue when using the gem it self??

Answer 1

Do you have an older version of the gem installed, or another gem which is named Shopsense?

With the error you’re getting, I suspect the issue would be related ruby trying to automatically find the gem when you do require 'Shopsense' and finding something other than what you want. When you do require '../lib/shopsense.rb' it defines a specific path to the gem, so you always get the gem you want.

I don’t have any experience with Shopsense, but the link you supplied looks like its a version 0.1.0, while the ruby interpreter found a Shopsense-0.1.1. I suspect the issue has to do with that. In fact, the source for Shopsense you linked to, line 76 (where the error is in your output) is a blank line.